Advisory boundary-shape measurements
District compactness, without pretending it proves intent.
Compare Polsby–Popper and convex-hull ratios for official 2024 congressional and state legislative boundaries. Detailed measurements are checked against Census 1:500,000 geometry so resolution-sensitive shapes remain visible instead of becoming false precision.
Compactness is a descriptive screen, not a gerrymandering severity score.
Low values can reflect coastlines, islands, political subdivisions, communities of interest, legal requirements, or map resolution. They do not establish partisan intent, illegality, representational quality, fraud, or misconduct.
Comparable shape metrics
Official plan boundaries
Showing 2,001–2,100 of 7,272
| District | Type | Polsby–Popper | Convex hull | Relative percentile | Resolution check | Boundary detail |
|---|---|---|---|---|---|---|
| MO · State House District 113GEOID 29113 · effective 2024-01-01 | State legislative lower chamber | 0.246500K: 0.252 | 0.615500K: 0.617 | 25.3middle or higher | stablePP difference 2.5% | 59.724 km1,194 vertices · 1 part · 0 holes |
| WI · Assembly District 11GEOID 55011 · effective 2024-01-01 | State legislative lower chamber | 0.246500K: 0.255 | 0.731500K: 0.731 | 25.4middle or higher | stablePP difference 3.5% | 42.378 km1,019 vertices · 1 part · 0 holes |
| GA · State Senate District 52GEOID 13052 · effective 2024-01-01 | State legislative upper chamber | 0.246500K: 0.252 | 0.719500K: 0.719 | 29.7middle or higher | stablePP difference 2.1% | 347.295 km4,629 vertices · 1 part · 0 holes |
| CT · State House District 6GEOID 09006 · effective 2024-01-01 | State legislative lower chamber | 0.246500K: 0.247 | 0.646500K: 0.645 | 25.4middle or higher | stablePP difference 0.5% | 24.269 km472 vertices · 1 part · 0 holes |
| NJ · Congressional District 5GEOID 3405 · effective 2024-01-01 | U.S. House | 0.246500K: 0.252 | 0.679500K: 0.679 | 41.8middle or higher | stablePP difference 2.2% | 299.028 km6,512 vertices · 1 part · 0 holes |
| KY · State House District 45GEOID 21045 · effective 2024-01-01 | State legislative lower chamber | 0.246500K: 0.256 | 0.694500K: 0.694 | 25.4middle or higher | stablePP difference 3.6% | 87.07 km1,919 vertices · 1 part · 0 holes |
| IL · State House District 92GEOID 17092 · effective 2024-01-01 | State legislative lower chamber | 0.247500K: 0.253 | 0.671500K: 0.671 | 25.4middle or higher | stablePP difference 2.7% | 79.415 km1,742 vertices · 1 part · 0 holes |
| TN · State Senate District 13GEOID 47013 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.253 | 0.760500K: 0.761 | 29.8middle or higher | stablePP difference 2.4% | 216.371 km3,410 vertices · 1 part · 0 holes |
| SC · State Senate District 29GEOID 45029 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.259 | 0.742500K: 0.742 | 29.8middle or higher | stablePP difference 5.0% | 443.689 km7,655 vertices · 1 part · 0 holes |
| VA · State Senate District 2GEOID 51002 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.256 | 0.712500K: 0.712 | 29.9middle or higher | stablePP difference 3.5% | 615.298 km11,467 vertices · 1 part · 0 holes |
| OR · Congressional District 4GEOID 4104 · effective 2024-01-01 | U.S. House | 0.247500K: 0.239 | 0.663500K: 0.654 | 42.0middle or higher | stablePP difference 3.0% | 1,291.12 km18,340 vertices · 1 part · 0 holes |
| IL · State Senate District 43GEOID 17043 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.249 | 0.705500K: 0.705 | 29.9middle or higher | stablePP difference 1.0% | 165.743 km2,585 vertices · 1 part · 0 holes |
| MS · State Senate District 50GEOID 28050 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.128 | 0.702500K: 0.278 | 30.0middle or higher | resolution sensitivePP difference 48.1% | 183.013 km3,403 vertices · 1 part · 0 holes |
| LA · State House District 42GEOID 22042 · effective 2024-01-01 | State legislative lower chamber | 0.247500K: 0.264 | 0.825500K: 0.826 | 25.4middle or higher | stablePP difference 6.4% | 224.382 km2,812 vertices · 1 part · 0 holes |
| PA · State House District 157GEOID 42157 · effective 2024-01-01 | State legislative lower chamber | 0.247500K: 0.253 | 0.696500K: 0.696 | 25.4middle or higher | stablePP difference 2.4% | 85.321 km1,430 vertices · 2 parts · 0 holes |
| KS · State House District 35GEOID 20035 · effective 2024-01-01 | State legislative lower chamber | 0.247500K: 0.249 | 0.605500K: 0.604 | 25.5middle or higher | stablePP difference 0.7% | 49.802 km493 vertices · 1 part · 0 holes |
| MS · State Senate District 41GEOID 28041 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.252 | 0.692500K: 0.692 | 30.1middle or higher | stablePP difference 1.9% | 416.3 km5,383 vertices · 1 part · 0 holes |
| TN · Congressional District 6GEOID 4706 · effective 2024-01-01 | U.S. House | 0.247500K: 0.253 | 0.766500K: 0.766 | 42.3middle or higher | stablePP difference 2.2% | 892.22 km15,677 vertices · 1 part · 0 holes |
| AL · State House District 49GEOID 01049 · effective 2024-01-01 | State legislative lower chamber | 0.247500K: 0.254 | 0.760500K: 0.760 | 25.5middle or higher | stablePP difference 2.8% | 290.628 km5,932 vertices · 1 part · 0 holes |
| MT · State Senate District 45GEOID 30045 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.257 | 0.754500K: 0.754 | 30.1middle or higher | stablePP difference 4.0% | 529.212 km9,428 vertices · 1 part · 0 holes |
| GA · State House District 69GEOID 13069 · effective 2024-01-01 | State legislative lower chamber | 0.247500K: 0.252 | 0.690500K: 0.689 | 25.5middle or higher | stablePP difference 2.1% | 87.603 km1,931 vertices · 1 part · 0 holes |
| AL · State Senate District 28GEOID 01028 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.261 | 0.722500K: 0.722 | 30.1middle or higher | stablePP difference 5.4% | 658.274 km8,544 vertices · 1 part · 0 holes |
| CA · Congressional District 17GEOID 0617 · effective 2024-01-01 | U.S. House | 0.247500K: 0.240 | 0.757500K: 0.742 | 42.5middle or higher | stablePP difference 3.1% | 157.139 km4,268 vertices · 1 part · 0 holes |
| CA · State Senate District 11GEOID 06011 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.295 | 0.363500K: 0.243 | 30.2middle or higher | resolution sensitivePP difference 16.2% | 185.425 km1,152 vertices · 2 parts · 0 holes |
| ID · State Senate District 8GEOID 16008 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.266 | 0.720500K: 0.721 | 30.3middle or higher | stablePP difference 6.9% | 1,340.348 km27,188 vertices · 1 part · 0 holes |
| ID · State House District 8GEOID 16008 · effective 2024-01-01 | State legislative lower chamber | 0.247500K: 0.266 | 0.720500K: 0.721 | 25.5middle or higher | stablePP difference 6.9% | 1,340.348 km27,188 vertices · 1 part · 0 holes |
| OR · State House District 17GEOID 41017 · effective 2024-01-01 | State legislative lower chamber | 0.247500K: 0.251 | 0.719500K: 0.719 | 25.6middle or higher | stablePP difference 1.6% | 374.035 km4,470 vertices · 1 part · 0 holes |
| CT · State House District 134GEOID 09134 · effective 2024-01-01 | State legislative lower chamber | 0.247500K: 0.259 | 0.655500K: 0.656 | 25.6middle or higher | stablePP difference 4.5% | 51.957 km1,604 vertices · 1 part · 0 holes |
| NC · State House District 118GEOID 37118 · effective 2024-01-01 | State legislative lower chamber | 0.247500K: 0.264 | 0.697500K: 0.698 | 25.6middle or higher | stablePP difference 6.4% | 363.738 km11,889 vertices · 1 part · 0 holes |
| NH · State Senate District 18GEOID 33018 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.249 | 0.565500K: 0.565 | 30.3middle or higher | stablePP difference 0.8% | 66.505 km1,150 vertices · 1 part · 0 holes |
| OK · State Senate District 14GEOID 40014 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.252 | 0.678500K: 0.678 | 30.4middle or higher | stablePP difference 1.7% | 579.244 km5,473 vertices · 1 part · 0 holes |
| VA · State Senate District 24GEOID 51024 · effective 2024-01-01 | State legislative upper chamber | 0.247500K: 0.163 | 0.645500K: 0.614 | 30.4middle or higher | resolution sensitivePP difference 34.1% | 229.082 km4,276 vertices · 1 part · 0 holes |
| NC · State House District 111GEOID 37111 · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.255 | 0.653500K: 0.653 | 25.6middle or higher | stablePP difference 2.8% | 253.331 km4,710 vertices · 1 part · 0 holes |
| MD · State Legislative Subdistrict 7AGEOID 2407A · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.198 | 0.761500K: 0.729 | 25.6middle or higher | resolution sensitivePP difference 20.1% | 114.167 km3,192 vertices · 1 part · 0 holes |
| NY · Assembly District 25GEOID 36025 · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.251 | 0.620500K: 0.619 | 25.7middle or higher | stablePP difference 1.3% | 29.648 km473 vertices · 1 part · 0 holes |
| WV · Congressional District 1GEOID 5401 · effective 2024-01-01 | U.S. House | 0.248500K: 0.263 | 0.795500K: 0.795 | 42.7middle or higher | stablePP difference 5.7% | 1,377.644 km25,268 vertices · 1 part · 0 holes |
| CA · Assembly District 35GEOID 06035 · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.250 | 0.740500K: 0.741 | 25.7middle or higher | stablePP difference 1.0% | 497.715 km3,470 vertices · 1 part · 0 holes |
| TX · State House District 99GEOID 48099 · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.250 | 0.753500K: 0.753 | 25.7middle or higher | stablePP difference 0.8% | 139.792 km1,757 vertices · 1 part · 0 holes |
| UT · State Senate District 22GEOID 49022 · effective 2024-01-01 | State legislative upper chamber | 0.248500K: 0.261 | 0.674500K: 0.674 | 30.4middle or higher | stablePP difference 5.0% | 96.461 km1,688 vertices · 1 part · 0 holes |
| VA · State Senate District 5GEOID 51005 · effective 2024-01-01 | State legislative upper chamber | 0.248500K: 0.259 | 0.760500K: 0.760 | 30.5middle or higher | stablePP difference 4.3% | 557.456 km10,514 vertices · 1 part · 0 holes |
| IN · State House District 32GEOID 18032 · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.253 | 0.652500K: 0.651 | 25.7middle or higher | stablePP difference 1.8% | 67.056 km1,268 vertices · 1 part · 0 holes |
| NH · State House District Rockingham 24GEOID 33724 · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.237 | 0.610500K: 0.389 | 25.7middle or higher | resolution sensitivePP difference 4.4% | 74.968 km608 vertices · 1 part · 0 holes |
| PR · State House District 9GEOID 72009 · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.266 | 0.637500K: 0.638 | 25.8middle or higher | stablePP difference 6.9% | 72.581 km2,419 vertices · 1 part · 0 holes |
| WY · State House District 18GEOID 56018 · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.249 | 0.695500K: 0.695 | 25.8middle or higher | stablePP difference 0.5% | 800.936 km4,760 vertices · 1 part · 0 holes |
| MT · State Senate District 36GEOID 30036 · effective 2024-01-01 | State legislative upper chamber | 0.248500K: 0.263 | 0.705500K: 0.705 | 30.6middle or higher | stablePP difference 5.5% | 336.441 km8,025 vertices · 1 part · 0 holes |
| TX · Congressional District 36GEOID 4836 · effective 2024-01-01 | U.S. House | 0.248500K: 0.206 | 0.772500K: 0.744 | 43.0middle or higher | stablePP difference 17.0% | 910.887 km13,908 vertices · 1 part · 0 holes |
| MD · State Legislative Subdistrict 33AGEOID 2433A · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.257 | 0.640500K: 0.640 | 25.8middle or higher | stablePP difference 3.5% | 40.739 km1,257 vertices · 1 part · 0 holes |
| IL · Congressional District 10GEOID 1710 · effective 2024-01-01 | U.S. House | 0.248500K: 0.278 | 0.714500K: 0.715 | 43.2middle or higher | stablePP difference 10.7% | 264.864 km10,589 vertices · 1 part · 0 holes |
| GA · State House District 18GEOID 13018 · effective 2024-01-01 | State legislative lower chamber | 0.248500K: 0.256 | 0.758500K: 0.758 | 25.8middle or higher | stablePP difference 2.8% | 256.144 km2,763 vertices · 1 part · 0 holes |
| VA · State Senate District 33GEOID 51033 · effective 2024-01-01 | State legislative upper chamber | 0.248500K: 0.247 | 0.707500K: 0.695 | 30.6middle or higher | stablePP difference 0.4% | 102.909 km4,110 vertices · 1 part · 0 holes |
| MT · State House District 78GEOID 30078 · effective 2024-01-01 | State legislative lower chamber | 0.249500K: 0.257 | 0.743500K: 0.743 | 25.8middle or higher | stablePP difference 3.2% | 1,001.384 km10,577 vertices · 1 part · 0 holes |
| IL · State House District 99GEOID 17099 · effective 2024-01-01 | State legislative lower chamber | 0.249500K: 0.252 | 0.650500K: 0.650 | 25.9middle or higher | stablePP difference 1.4% | 451.268 km4,052 vertices · 1 part · 0 holes |
| GA · State House District 31GEOID 13031 · effective 2024-01-01 | State legislative lower chamber | 0.249500K: 0.265 | 0.696500K: 0.696 | 25.9middle or higher | stablePP difference 6.2% | 159.79 km3,111 vertices · 1 part · 0 holes |
| MO · State Senate District 11GEOID 29011 · effective 2024-01-01 | State legislative upper chamber | 0.249500K: 0.255 | 0.773500K: 0.773 | 30.7middle or higher | stablePP difference 2.6% | 174.006 km1,844 vertices · 1 part · 0 holes |
| KY · State House District 46GEOID 21046 · effective 2024-01-01 | State legislative lower chamber | 0.249500K: 0.254 | 0.678500K: 0.678 | 25.9middle or higher | stablePP difference 1.9% | 42.899 km1,015 vertices · 1 part · 0 holes |
| VA · State House District 62GEOID 51062 · effective 2024-01-01 | State legislative lower chamber | 0.249500K: 0.261 | 0.717500K: 0.717 | 25.9middle or higher | stablePP difference 4.6% | 347.153 km13,584 vertices · 1 part · 0 holes |
| ME · State House District 82GEOID 23082 · effective 2024-01-01 | State legislative lower chamber | 0.249500K: 0.256 | 0.672500K: 0.672 | 25.9middle or higher | stablePP difference 2.4% | 173.457 km2,857 vertices · 1 part · 0 holes |
| NM · State Senate District 8GEOID 35008 · effective 2024-01-01 | State legislative upper chamber | 0.249500K: 0.254 | 0.790500K: 0.790 | 30.7middle or higher | stablePP difference 1.8% | 1,412.958 km16,993 vertices · 1 part · 0 holes |
| CA · Assembly District 20GEOID 06020 · effective 2024-01-01 | State legislative lower chamber | 0.249500K: 0.250 | 0.820500K: 0.781 | 26.0middle or higher | stablePP difference 0.2% | 150.443 km3,401 vertices · 1 part · 0 holes |
| MO · State House District 91GEOID 29091 · effective 2024-01-01 | State legislative lower chamber | 0.249500K: 0.259 | 0.716500K: 0.716 | 26.0middle or higher | stablePP difference 3.6% | 35.166 km1,107 vertices · 1 part · 0 holes |
| MO · State House District 85GEOID 29085 · effective 2024-01-01 | State legislative lower chamber | 0.249500K: 0.260 | 0.738500K: 0.739 | 26.0middle or higher | stablePP difference 4.2% | 34.513 km929 vertices · 1 part · 0 holes |
| CO · State Senate District 11GEOID 08011 · effective 2024-01-01 | State legislative upper chamber | 0.249500K: 0.253 | 0.730500K: 0.730 | 30.8middle or higher | stablePP difference 1.5% | 106.815 km1,491 vertices · 1 part · 0 holes |
| AK · State House District 34GEOID 02034 · effective 2024-01-01 | State legislative lower chamber | 0.250500K: 0.259 | 0.804500K: 0.804 | 26.0middle or higher | stablePP difference 3.5% | 735.435 km6,675 vertices · 1 part · 0 holes |
| KY · State Senate District 34GEOID 21034 · effective 2024-01-01 | State legislative upper chamber | 0.250500K: 0.259 | 0.768500K: 0.768 | 30.8middle or higher | stablePP difference 3.4% | 252.617 km4,719 vertices · 1 part · 0 holes |
| CA · Congressional District 35GEOID 0635 · effective 2024-01-01 | U.S. House | 0.250500K: 0.257 | 0.710500K: 0.711 | 43.4middle or higher | stablePP difference 2.9% | 152.093 km3,069 vertices · 1 part · 0 holes |
| ME · State House District 140GEOID 23140 · effective 2024-01-01 | State legislative lower chamber | 0.250500K: 0.272 | 0.692500K: 0.692 | 26.1middle or higher | stablePP difference 8.1% | 91.346 km2,486 vertices · 1 part · 0 holes |
| PA · State Senate District 14GEOID 42014 · effective 2024-01-01 | State legislative upper chamber | 0.250500K: 0.254 | 0.721500K: 0.721 | 30.9middle or higher | stablePP difference 1.6% | 155.639 km2,305 vertices · 1 part · 0 holes |
| SC · State House District 51GEOID 45051 · effective 2024-01-01 | State legislative lower chamber | 0.250500K: 0.257 | 0.673500K: 0.673 | 26.1middle or higher | stablePP difference 2.6% | 136.338 km2,013 vertices · 1 part · 0 holes |
| OH · State House District 40GEOID 39040 · effective 2024-01-01 | State legislative lower chamber | 0.250500K: 0.258 | 0.786500K: 0.786 | 26.1middle or higher | stablePP difference 3.0% | 297.463 km2,650 vertices · 1 part · 0 holes |
| MA · 13th Worcester DistrictGEOID 25154 · effective 2024-01-01 | State legislative lower chamber | 0.250500K: 0.259 | 0.799500K: 0.801 | 26.1middle or higher | stablePP difference 3.5% | 37.358 km754 vertices · 1 part · 0 holes |
| MO · State Senate District 21GEOID 29021 · effective 2024-01-01 | State legislative upper chamber | 0.250500K: 0.251 | 0.707500K: 0.707 | 30.9middle or higher | stablePP difference 0.4% | 656.503 km6,348 vertices · 1 part · 0 holes |
| WA · Congressional District 10GEOID 5310 · effective 2024-01-01 | U.S. House | 0.250500K: 0.173 | 0.802500K: 0.768 | 43.6middle or higher | resolution sensitivePP difference 30.9% | 320.408 km4,250 vertices · 1 part · 0 holes |
| WY · State Senate District 14GEOID 56014 · effective 2024-01-01 | State legislative upper chamber | 0.250500K: 0.253 | 0.739500K: 0.739 | 31.0middle or higher | stablePP difference 1.0% | 1,154.747 km7,088 vertices · 1 part · 0 holes |
| TX · State Senate District 29GEOID 48029 · effective 2024-01-01 | State legislative upper chamber | 0.250500K: 0.266 | 0.786500K: 0.786 | 31.0middle or higher | stablePP difference 5.8% | 1,827.281 km33,400 vertices · 1 part · 0 holes |
| GA · Congressional District 5GEOID 1305 · effective 2024-01-01 | U.S. House | 0.250500K: 0.258 | 0.791500K: 0.791 | 43.9middle or higher | stablePP difference 3.0% | 171.466 km3,615 vertices · 1 part · 0 holes |
| MS · State Senate District 27GEOID 28027 · effective 2024-01-01 | State legislative upper chamber | 0.250500K: 0.251 | 0.653500K: 0.652 | 31.1middle or higher | stablePP difference 0.4% | 153.366 km2,195 vertices · 1 part · 0 holes |
| CT · State House District 90GEOID 09090 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.256 | 0.630500K: 0.630 | 26.1middle or higher | stablePP difference 2.1% | 72.665 km1,091 vertices · 1 part · 0 holes |
| CA · State Senate District 8GEOID 06008 · effective 2024-01-01 | State legislative upper chamber | 0.251500K: 0.255 | 0.728500K: 0.729 | 31.1middle or higher | stablePP difference 1.8% | 187.919 km1,978 vertices · 1 part · 0 holes |
| IL · State Senate District 41GEOID 17041 · effective 2024-01-01 | State legislative upper chamber | 0.251500K: 0.256 | 0.664500K: 0.664 | 31.2middle or higher | stablePP difference 2.0% | 111.383 km2,357 vertices · 1 part · 0 holes |
| MA · 5th Bristol DistrictGEOID 25014 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.262 | 0.672500K: 0.673 | 26.1middle or higher | stablePP difference 4.2% | 82.185 km1,486 vertices · 1 part · 0 holes |
| TN · State House District 43GEOID 47043 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.256 | 0.710500K: 0.710 | 26.2middle or higher | stablePP difference 2.1% | 324.918 km4,369 vertices · 2 parts · 0 holes |
| TX · State House District 32GEOID 48032 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.039 | 0.721500K: 0.414 | 26.2middle or higher | resolution sensitivePP difference 84.6% | 367.948 km3,875 vertices · 1 part · 0 holes |
| NM · State Senate District 7GEOID 35007 · effective 2024-01-01 | State legislative upper chamber | 0.251500K: 0.252 | 0.714500K: 0.714 | 31.2middle or higher | stablePP difference 0.2% | 1,000.596 km4,690 vertices · 1 part · 0 holes |
| SC · State House District 62GEOID 45062 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.267 | 0.738500K: 0.738 | 26.2middle or higher | stablePP difference 6.0% | 196.726 km3,672 vertices · 1 part · 0 holes |
| WV · Delegate District 70GEOID 54070 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.269 | 0.725500K: 0.726 | 26.2middle or higher | stablePP difference 6.7% | 32.246 km832 vertices · 1 part · 0 holes |
| LA · State House District 27GEOID 22027 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.261 | 0.652500K: 0.652 | 26.3middle or higher | stablePP difference 3.7% | 210.249 km3,245 vertices · 1 part · 0 holes |
| NV · Assembly District 40GEOID 32040 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.256 | 0.652500K: 0.652 | 26.3middle or higher | stablePP difference 1.8% | 256.017 km3,267 vertices · 1 part · 0 holes |
| PA · State House District 76GEOID 42076 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.253 | 0.653500K: 0.653 | 26.3middle or higher | stablePP difference 0.8% | 382.112 km3,626 vertices · 1 part · 0 holes |
| NY · Assembly District 19GEOID 36019 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.258 | 0.664500K: 0.664 | 26.3middle or higher | stablePP difference 2.7% | 53.599 km977 vertices · 1 part · 0 holes |
| SC · State Senate District 34GEOID 45034 · effective 2024-01-01 | State legislative upper chamber | 0.251500K: 0.181 | 0.655500K: 0.581 | 31.3middle or higher | resolution sensitivePP difference 28.2% | 209.751 km1,057 vertices · 1 part · 0 holes |
| WV · Delegate District 53GEOID 54053 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.267 | 0.733500K: 0.733 | 26.3middle or higher | stablePP difference 6.0% | 160.741 km4,351 vertices · 1 part · 0 holes |
| MI · State Senate District 17GEOID 26017 · effective 2024-01-01 | State legislative upper chamber | 0.251500K: 0.295 | 0.638500K: 0.680 | 31.3middle or higher | stablePP difference 14.8% | 673.406 km2,829 vertices · 1 part · 0 holes |
| OK · Congressional District 4GEOID 4004 · effective 2024-01-01 | U.S. House | 0.251500K: 0.257 | 0.762500K: 0.762 | 44.1middle or higher | stablePP difference 2.2% | 1,131.745 km12,779 vertices · 1 part · 0 holes |
| WV · Delegate District 92GEOID 54092 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.261 | 0.760500K: 0.761 | 26.4middle or higher | stablePP difference 3.7% | 80.853 km2,776 vertices · 1 part · 0 holes |
| NY · State Senate District 26GEOID 36026 · effective 2024-01-01 | State legislative upper chamber | 0.251500K: 0.122 | 0.756500K: 0.467 | 31.4middle or higher | resolution sensitivePP difference 51.3% | 47.154 km727 vertices · 3 parts · 0 holes |
| NV · Assembly District 22GEOID 32022 · effective 2024-01-01 | State legislative lower chamber | 0.251500K: 0.253 | 0.596500K: 0.597 | 26.4middle or higher | stablePP difference 0.7% | 54.008 km1,065 vertices · 1 part · 0 holes |
| MT · State Senate District 11GEOID 30011 · effective 2024-01-01 | State legislative upper chamber | 0.252500K: 0.268 | 0.668500K: 0.669 | 31.4middle or higher | stablePP difference 6.2% | 51.888 km1,312 vertices · 1 part · 0 holes |
| SC · State House District 121GEOID 45121 · effective 2024-01-01 | State legislative lower chamber | 0.252500K: 0.248 | 0.785500K: 0.761 | 26.4middle or higher | stablePP difference 1.5% | 336.412 km3,748 vertices · 1 part · 0 holes |
| MA · 12th Hampden DistrictGEOID 25055 · effective 2024-01-01 | State legislative lower chamber | 0.252500K: 0.260 | 0.718500K: 0.718 | 26.4middle or higher | stablePP difference 3.0% | 77.584 km1,810 vertices · 1 part · 0 holes |
| CA · Congressional District 52GEOID 0652 · effective 2024-01-01 | U.S. House | 0.252500K: 0.266 | 0.751500K: 0.750 | 44.3middle or higher | stablePP difference 5.5% | 136.137 km2,613 vertices · 1 part · 0 holes |
How the measures work
Two measures, one stability guard.
- Polsby–Popper
- 4π × area ÷ perimeter². A circle approaches 1. Coastline and boundary detail can sharply increase perimeter.
- Convex-hull ratio
- District area divided by its local equal-area convex hull. Disconnected or deeply concave shapes score lower.
- Resolution guard
- Detailed and 1:500,000 values are labeled stable only when their relative differences stay within 20% and 10%, respectively.
Election-result boundary
Outcome relationships are not calculated yet.
The repository does not yet contain a nationwide certified, same-plan-vintage district result set. Compactness is not joined to election outcomes across mismatched plans or geography.
That guard prevents district results from being compared against a different plan vintage or geography.
Source provenance
U.S. Census Bureau TIGERweb
Six retained and hash-pinned GeoJSON collections cover detailed and generalized versions of each district type.
- congressional · detailed 444 source features
- congressional · generalized 500k 441 source features
- state upper · detailed 1,964 source features
- state upper · generalized 500k 1,960 source features
- state lower · detailed 4,879 source features
- state lower · generalized 500k 4,874 source features