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 1,701–1,800 of 7,272
| District | Type | Polsby–Popper | Convex hull | Relative percentile | Resolution check | Boundary detail |
|---|---|---|---|---|---|---|
| PR · State House District 31GEOID 72031 · effective 2024-01-01 | State legislative lower chamber | 0.231500K: 0.252 | 0.687500K: 0.690 | 20.9lower quartile | stablePP difference 8.2% | 82.203 km2,516 vertices · 1 part · 0 holes |
| PA · State House District 196GEOID 42196 · effective 2024-01-01 | State legislative lower chamber | 0.231500K: 0.244 | 0.745500K: 0.746 | 20.9lower quartile | stablePP difference 5.4% | 135.587 km3,564 vertices · 1 part · 0 holes |
| GA · State House District 72GEOID 13072 · effective 2024-01-01 | State legislative lower chamber | 0.231500K: 0.239 | 0.730500K: 0.730 | 20.9lower quartile | stablePP difference 3.3% | 279.498 km2,740 vertices · 1 part · 0 holes |
| IL · State House District 20GEOID 17020 · effective 2024-01-01 | State legislative lower chamber | 0.231500K: 0.235 | 0.649500K: 0.649 | 21.0lower quartile | stablePP difference 1.5% | 49.945 km1,752 vertices · 1 part · 0 holes |
| MA · 6th Suffolk DistrictGEOID 25128 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.243 | 0.651500K: 0.650 | 21.0lower quartile | stablePP difference 4.8% | 20.827 km504 vertices · 1 part · 0 holes |
| TN · State House District 94GEOID 47094 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.236 | 0.685500K: 0.685 | 21.0lower quartile | stablePP difference 2.1% | 436.499 km4,911 vertices · 1 part · 0 holes |
| NC · Congressional District 5GEOID 3705 · effective 2024-01-01 | U.S. House | 0.232500K: 0.237 | 0.691500K: 0.692 | 38.4middle or higher | stablePP difference 2.3% | 771.743 km16,207 vertices · 1 part · 0 holes |
| OK · State House District 72GEOID 40072 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.234 | 0.559500K: 0.559 | 21.0lower quartile | stablePP difference 1.1% | 75.204 km677 vertices · 1 part · 0 holes |
| KY · State House District 3GEOID 21003 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.248 | 0.617500K: 0.617 | 21.0lower quartile | stablePP difference 6.6% | 232.445 km5,647 vertices · 1 part · 0 holes |
| LA · State House District 16GEOID 22016 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.236 | 0.636500K: 0.637 | 21.1lower quartile | stablePP difference 2.0% | 149.545 km3,064 vertices · 1 part · 0 holes |
| GA · Congressional District 10GEOID 1310 · effective 2024-01-01 | U.S. House | 0.232500K: 0.241 | 0.769500K: 0.769 | 38.6middle or higher | stablePP difference 3.9% | 866.103 km23,081 vertices · 1 part · 0 holes |
| SC · State House District 5GEOID 45005 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.236 | 0.748500K: 0.748 | 21.1lower quartile | stablePP difference 1.9% | 89.594 km1,678 vertices · 1 part · 0 holes |
| NC · State Senate District 16GEOID 37016 · effective 2024-01-01 | State legislative upper chamber | 0.232500K: 0.236 | 0.688500K: 0.688 | 26.2middle or higher | stablePP difference 1.8% | 110.745 km3,752 vertices · 1 part · 0 holes |
| WV · Delegate District 58GEOID 54058 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.251 | 0.702500K: 0.704 | 21.1lower quartile | stablePP difference 7.8% | 43.813 km1,173 vertices · 1 part · 0 holes |
| MA · 6th Bristol DistrictGEOID 25015 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.245 | 0.679500K: 0.679 | 21.1lower quartile | stablePP difference 5.2% | 53.592 km1,043 vertices · 1 part · 0 holes |
| AL · State House District 35GEOID 01035 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.235 | 0.796500K: 0.796 | 21.1lower quartile | stablePP difference 1.3% | 336.512 km3,165 vertices · 1 part · 0 holes |
| ME · State House District 138GEOID 23138 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.237 | 0.610500K: 0.610 | 21.2lower quartile | stablePP difference 2.0% | 109.602 km2,338 vertices · 1 part · 0 holes |
| NV · Assembly District 31GEOID 32031 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.236 | 0.697500K: 0.697 | 21.2lower quartile | stablePP difference 1.4% | 112.374 km1,358 vertices · 1 part · 0 holes |
| WI · Assembly District 90GEOID 55090 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.311 | 0.627500K: 0.630 | 21.2lower quartile | resolution sensitivePP difference 25.3% | 63.858 km909 vertices · 2 parts · 0 holes |
| KY · State House District 93GEOID 21093 · effective 2024-01-01 | State legislative lower chamber | 0.232500K: 0.240 | 0.662500K: 0.662 | 21.2lower quartile | stablePP difference 3.1% | 39.404 km1,116 vertices · 1 part · 0 holes |
| IL · State House District 52GEOID 17052 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.239 | 0.583500K: 0.583 | 21.2lower quartile | stablePP difference 2.8% | 137.104 km2,295 vertices · 1 part · 0 holes |
| IN · State House District 64GEOID 18064 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.235 | 0.710500K: 0.710 | 21.3lower quartile | stablePP difference 0.9% | 335.236 km3,305 vertices · 1 part · 0 holes |
| LA · State Senate District 27GEOID 22027 · effective 2024-01-01 | State legislative upper chamber | 0.233500K: 0.240 | 0.719500K: 0.719 | 26.3middle or higher | stablePP difference 3.1% | 207.04 km1,478 vertices · 1 part · 0 holes |
| MN · State Senate District 3GEOID 27003 · effective 2024-01-01 | State legislative upper chamber | 0.233500K: 0.198 | 0.710500K: 0.665 | 26.3middle or higher | stablePP difference 14.7% | 1,437.4 km6,571 vertices · 1 part · 0 holes |
| IL · State Senate District 2GEOID 17002 · effective 2024-01-01 | State legislative upper chamber | 0.233500K: 0.237 | 0.681500K: 0.681 | 26.4middle or higher | stablePP difference 1.8% | 39.46 km1,445 vertices · 1 part · 0 holes |
| GA · Congressional District 7GEOID 1307 · effective 2024-01-01 | U.S. House | 0.233500K: 0.240 | 0.793500K: 0.793 | 38.9middle or higher | stablePP difference 3.0% | 402.438 km9,620 vertices · 1 part · 0 holes |
| ME · State House District 85GEOID 23085 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.245 | 0.746500K: 0.747 | 21.3lower quartile | stablePP difference 5.0% | 95.319 km1,792 vertices · 1 part · 1 hole |
| OR · State House District 15GEOID 41015 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.237 | 0.696500K: 0.696 | 21.3lower quartile | stablePP difference 1.5% | 151.438 km2,064 vertices · 1 part · 0 holes |
| CO · State House District 57GEOID 08057 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.236 | 0.606500K: 0.607 | 21.3lower quartile | stablePP difference 1.3% | 761.192 km6,253 vertices · 1 part · 0 holes |
| IL · State House District 41GEOID 17041 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.246 | 0.707500K: 0.707 | 21.4lower quartile | stablePP difference 5.1% | 67.316 km2,069 vertices · 1 part · 0 holes |
| MN · State Senate District 18GEOID 27018 · effective 2024-01-01 | State legislative upper chamber | 0.233500K: 0.241 | 0.858500K: 0.858 | 26.4middle or higher | stablePP difference 3.1% | 270.836 km5,225 vertices · 1 part · 0 holes |
| GA · State House District 106GEOID 13106 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.243 | 0.634500K: 0.635 | 21.4lower quartile | stablePP difference 3.9% | 52.652 km1,275 vertices · 1 part · 0 holes |
| LA · State Senate District 11GEOID 22011 · effective 2024-01-01 | State legislative upper chamber | 0.233500K: 0.248 | 0.716500K: 0.716 | 26.5middle or higher | stablePP difference 5.8% | 177.073 km4,989 vertices · 1 part · 0 holes |
| NH · State House District Strafford 16GEOID 33816 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.244 | 0.564500K: 0.565 | 21.4lower quartile | stablePP difference 4.3% | 29.862 km583 vertices · 1 part · 0 holes |
| WV · Delegate District 95GEOID 54095 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.240 | 0.687500K: 0.688 | 21.4lower quartile | stablePP difference 2.7% | 55.267 km1,365 vertices · 1 part · 0 holes |
| GA · State House District 124GEOID 13124 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.245 | 0.686500K: 0.686 | 21.4lower quartile | stablePP difference 4.9% | 408.828 km12,360 vertices · 1 part · 0 holes |
| IN · State House District 92GEOID 18092 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.237 | 0.713500K: 0.713 | 21.4lower quartile | stablePP difference 1.7% | 63.763 km1,257 vertices · 1 part · 0 holes |
| SC · State Senate District 23GEOID 45023 · effective 2024-01-01 | State legislative upper chamber | 0.233500K: 0.266 | 0.717500K: 0.717 | 26.5middle or higher | stablePP difference 12.4% | 221.313 km10,616 vertices · 1 part · 0 holes |
| MN · State Senate District 34GEOID 27034 · effective 2024-01-01 | State legislative upper chamber | 0.233500K: 0.236 | 0.622500K: 0.622 | 26.6middle or higher | stablePP difference 1.3% | 103.313 km1,665 vertices · 1 part · 0 holes |
| AL · State Senate District 18GEOID 01018 · effective 2024-01-01 | State legislative upper chamber | 0.233500K: 0.244 | 0.701500K: 0.701 | 26.6middle or higher | stablePP difference 4.4% | 95.044 km1,400 vertices · 1 part · 0 holes |
| GA · State House District 56GEOID 13056 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.238 | 0.681500K: 0.683 | 21.5lower quartile | stablePP difference 2.1% | 39.455 km748 vertices · 1 part · 0 holes |
| MA · 4th Norfolk DistrictGEOID 25099 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.238 | 0.701500K: 0.699 | 21.5lower quartile | stablePP difference 2.1% | 46.235 km703 vertices · 1 part · 0 holes |
| WY · State House District 17GEOID 56017 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.242 | 0.624500K: 0.626 | 21.5lower quartile | stablePP difference 3.7% | 27.043 km614 vertices · 1 part · 0 holes |
| VA · State Senate District 39GEOID 51039 · effective 2024-01-01 | State legislative upper chamber | 0.233500K: 0.272 | 0.613500K: 0.614 | 26.7middle or higher | stablePP difference 14.0% | 54.539 km4,728 vertices · 1 part · 0 holes |
| MS · State House District 120GEOID 28120 · effective 2024-01-01 | State legislative lower chamber | 0.233500K: 0.118 | 0.695500K: 0.294 | 21.5lower quartile | resolution sensitivePP difference 49.3% | 107.24 km847 vertices · 1 part · 0 holes |
| VA · State House District 26GEOID 51026 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.251 | 0.695500K: 0.696 | 21.6lower quartile | stablePP difference 6.9% | 61.928 km3,236 vertices · 1 part · 0 holes |
| NC · State Senate District 35GEOID 37035 · effective 2024-01-01 | State legislative upper chamber | 0.234500K: 0.238 | 0.633500K: 0.633 | 26.7middle or higher | stablePP difference 1.7% | 258.882 km4,770 vertices · 1 part · 0 holes |
| AL · State House District 88GEOID 01088 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.240 | 0.667500K: 0.668 | 21.6lower quartile | stablePP difference 2.5% | 100.27 km1,570 vertices · 1 part · 0 holes |
| AL · State House District 76GEOID 01076 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.249 | 0.703500K: 0.704 | 21.6lower quartile | stablePP difference 6.2% | 126.152 km3,856 vertices · 1 part · 0 holes |
| NY · Assembly District 44GEOID 36044 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.241 | 0.646500K: 0.648 | 21.6lower quartile | stablePP difference 3.0% | 21.585 km217 vertices · 1 part · 0 holes |
| AZ · State Senate District 23GEOID 04023 · effective 2024-01-01 | State legislative upper chamber | 0.234500K: 0.235 | 0.705500K: 0.705 | 26.8middle or higher | stablePP difference 0.5% | 1,255.354 km7,729 vertices · 1 part · 0 holes |
| AZ · State House District 23GEOID 04023 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.235 | 0.705500K: 0.705 | 21.6lower quartile | stablePP difference 0.5% | 1,255.354 km7,729 vertices · 1 part · 0 holes |
| RI · State House District 24GEOID 44024 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.225 | 0.619500K: 0.591 | 21.6lower quartile | stablePP difference 3.9% | 42.08 km1,335 vertices · 1 part · 0 holes |
| KY · State Senate District 36GEOID 21036 · effective 2024-01-01 | State legislative upper chamber | 0.234500K: 0.249 | 0.747500K: 0.748 | 26.8middle or higher | stablePP difference 6.0% | 105.92 km4,224 vertices · 1 part · 0 holes |
| CT · State House District 20GEOID 09020 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.240 | 0.629500K: 0.630 | 21.7lower quartile | stablePP difference 2.5% | 34.285 km761 vertices · 1 part · 0 holes |
| MI · State House District 61GEOID 26061 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.241 | 0.724500K: 0.724 | 21.7lower quartile | stablePP difference 3.1% | 61.113 km818 vertices · 1 part · 0 holes |
| MN · State House District 29AGEOID 2729A · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.248 | 0.624500K: 0.624 | 21.7lower quartile | stablePP difference 5.7% | 242.622 km3,947 vertices · 1 part · 0 holes |
| TN · State Senate District 6GEOID 47006 · effective 2024-01-01 | State legislative upper chamber | 0.234500K: 0.239 | 0.680500K: 0.680 | 26.9middle or higher | stablePP difference 2.2% | 214.063 km6,054 vertices · 1 part · 0 holes |
| MI · State House District 104GEOID 26104 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.257 | 0.559500K: 0.598 | 21.7lower quartile | stablePP difference 9.0% | 581.424 km2,224 vertices · 1 part · 0 holes |
| SC · Congressional District 4GEOID 4504 · effective 2024-01-01 | U.S. House | 0.234500K: 0.255 | 0.774500K: 0.775 | 39.1middle or higher | stablePP difference 8.3% | 416.763 km14,210 vertices · 1 part · 0 holes |
| CA · Assembly District 25GEOID 06025 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.245 | 0.769500K: 0.770 | 21.8lower quartile | stablePP difference 4.6% | 312.159 km5,524 vertices · 1 part · 0 holes |
| LA · State House District 56GEOID 22056 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.236 | 0.698500K: 0.698 | 21.8lower quartile | stablePP difference 0.7% | 220.908 km1,474 vertices · 1 part · 0 holes |
| SC · State Senate District 30GEOID 45030 · effective 2024-01-01 | State legislative upper chamber | 0.234500K: 0.238 | 0.688500K: 0.689 | 26.9middle or higher | stablePP difference 1.7% | 444.616 km5,260 vertices · 1 part · 0 holes |
| CO · State Senate District 14GEOID 08014 · effective 2024-01-01 | State legislative upper chamber | 0.234500K: 0.244 | 0.791500K: 0.791 | 27.0middle or higher | stablePP difference 3.9% | 104.494 km1,696 vertices · 1 part · 0 holes |
| MT · State Senate District 24GEOID 30024 · effective 2024-01-01 | State legislative upper chamber | 0.234500K: 0.239 | 0.681500K: 0.683 | 27.0middle or higher | stablePP difference 1.8% | 45.633 km1,225 vertices · 1 part · 0 holes |
| LA · State Senate District 1GEOID 22001 · effective 2024-01-01 | State legislative upper chamber | 0.234500K: 0.039 | 0.777500K: 0.356 | 27.1middle or higher | resolution sensitivePP difference 83.4% | 596.406 km12,023 vertices · 1 part · 0 holes |
| MI · State Senate District 20GEOID 26020 · effective 2024-01-01 | State legislative upper chamber | 0.234500K: 0.309 | 0.617500K: 0.724 | 27.1middle or higher | resolution sensitivePP difference 24.2% | 511.824 km2,233 vertices · 1 part · 0 holes |
| IL · State House District 46GEOID 17046 · effective 2024-01-01 | State legislative lower chamber | 0.234500K: 0.244 | 0.651500K: 0.651 | 21.8lower quartile | stablePP difference 4.0% | 62.445 km1,213 vertices · 1 part · 0 holes |
| PA · State House District 38GEOID 42038 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.247 | 0.698500K: 0.699 | 21.8lower quartile | stablePP difference 5.1% | 63.567 km1,600 vertices · 1 part · 0 holes |
| MI · State House District 29GEOID 26029 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.237 | 0.636500K: 0.636 | 21.8lower quartile | stablePP difference 0.9% | 124.75 km931 vertices · 1 part · 0 holes |
| PR · State House District 5GEOID 72005 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.262 | 0.732500K: 0.732 | 21.9lower quartile | stablePP difference 10.3% | 90.979 km3,057 vertices · 1 part · 0 holes |
| NC · State House District 9GEOID 37009 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.252 | 0.761500K: 0.762 | 21.9lower quartile | stablePP difference 6.9% | 232.954 km7,476 vertices · 1 part · 0 holes |
| NC · State House District 20GEOID 37020 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.230 | 0.740500K: 0.728 | 21.9lower quartile | stablePP difference 2.0% | 151.338 km2,820 vertices · 1 part · 0 holes |
| WA · Congressional District 9GEOID 5309 · effective 2024-01-01 | U.S. House | 0.235500K: 0.237 | 0.759500K: 0.743 | 39.3middle or higher | stablePP difference 1.1% | 171.853 km2,871 vertices · 1 part · 0 holes |
| GA · State House District 111GEOID 13111 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.245 | 0.651500K: 0.651 | 21.9lower quartile | stablePP difference 3.9% | 114.41 km3,715 vertices · 1 part · 0 holes |
| MT · State House District 26GEOID 30026 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.245 | 0.797500K: 0.797 | 21.9lower quartile | stablePP difference 4.1% | 789.633 km8,852 vertices · 1 part · 0 holes |
| OK · Congressional District 3GEOID 4003 · effective 2024-01-01 | U.S. House | 0.235500K: 0.236 | 0.660500K: 0.660 | 39.5middle or higher | stablePP difference 0.5% | 2,134.301 km15,097 vertices · 1 part · 0 holes |
| GA · State House District 148GEOID 13148 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.240 | 0.691500K: 0.691 | 22.0lower quartile | stablePP difference 2.0% | 413.858 km5,549 vertices · 1 part · 0 holes |
| CT · Congressional District 3GEOID 0903 · effective 2024-01-01 | U.S. House | 0.235500K: 0.238 | 0.728500K: 0.721 | 39.8middle or higher | stablePP difference 1.4% | 263.16 km4,786 vertices · 1 part · 0 holes |
| OR · State Senate District 13GEOID 41013 · effective 2024-01-01 | State legislative upper chamber | 0.235500K: 0.246 | 0.712500K: 0.712 | 27.2middle or higher | stablePP difference 4.5% | 105.373 km2,167 vertices · 1 part · 0 holes |
| IN · State House District 95GEOID 18095 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.243 | 0.668500K: 0.669 | 22.0lower quartile | stablePP difference 3.4% | 53.034 km1,186 vertices · 1 part · 0 holes |
| AR · State Senate District 7GEOID 05007 · effective 2024-01-01 | State legislative upper chamber | 0.235500K: 0.258 | 0.722500K: 0.722 | 27.2middle or higher | stablePP difference 8.9% | 397.243 km7,803 vertices · 1 part · 0 holes |
| CO · State House District 34GEOID 08034 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.240 | 0.636500K: 0.636 | 22.0lower quartile | stablePP difference 2.1% | 49.543 km651 vertices · 1 part · 0 holes |
| NM · State Senate District 14GEOID 35014 · effective 2024-01-01 | State legislative upper chamber | 0.235500K: 0.244 | 0.722500K: 0.724 | 27.3middle or higher | stablePP difference 3.5% | 117.524 km1,983 vertices · 1 part · 0 holes |
| CO · State House District 15GEOID 08015 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.238 | 0.667500K: 0.667 | 22.0lower quartile | stablePP difference 1.1% | 110.185 km1,318 vertices · 1 part · 0 holes |
| ME · State House District 100GEOID 23100 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.202 | 0.604500K: 0.541 | 22.0lower quartile | resolution sensitivePP difference 14.3% | 43.005 km691 vertices · 1 part · 0 holes |
| NJ · Congressional District 3GEOID 3403 · effective 2024-01-01 | U.S. House | 0.235500K: 0.247 | 0.615500K: 0.615 | 40.0middle or higher | stablePP difference 4.7% | 390.561 km13,477 vertices · 1 part · 0 holes |
| OH · State House District 25GEOID 39025 · effective 2024-01-01 | State legislative lower chamber | 0.235500K: 0.247 | 0.777500K: 0.778 | 22.1lower quartile | stablePP difference 4.8% | 65.144 km1,382 vertices · 1 part · 0 holes |
| IA · State House District 85GEOID 19085 · effective 2024-01-01 | State legislative lower chamber | 0.236500K: 0.244 | 0.769500K: 0.770 | 22.1lower quartile | stablePP difference 3.3% | 126.471 km1,578 vertices · 1 part · 0 holes |
| SC · State House District 111GEOID 45111 · effective 2024-01-01 | State legislative lower chamber | 0.236500K: 0.242 | 0.630500K: 0.630 | 22.1lower quartile | stablePP difference 2.6% | 49.406 km1,550 vertices · 1 part · 0 holes |
| KY · State House District 48GEOID 21048 · effective 2024-01-01 | State legislative lower chamber | 0.236500K: 0.239 | 0.602500K: 0.602 | 22.1lower quartile | stablePP difference 1.5% | 69.369 km1,489 vertices · 1 part · 0 holes |
| WV · Delegate District 7GEOID 54007 · effective 2024-01-01 | State legislative lower chamber | 0.236500K: 0.248 | 0.702500K: 0.704 | 22.1lower quartile | stablePP difference 5.0% | 221.262 km6,259 vertices · 1 part · 0 holes |
| WY · State House District 16GEOID 56016 · effective 2024-01-01 | State legislative lower chamber | 0.236500K: 0.240 | 0.628500K: 0.629 | 22.2lower quartile | stablePP difference 1.9% | 18.184 km249 vertices · 1 part · 0 holes |
| TN · State House District 91GEOID 47091 · effective 2024-01-01 | State legislative lower chamber | 0.236500K: 0.238 | 0.657500K: 0.657 | 22.2lower quartile | stablePP difference 0.8% | 61.504 km1,758 vertices · 1 part · 0 holes |
| SC · State Senate District 20GEOID 45020 · effective 2024-01-01 | State legislative upper chamber | 0.236500K: 0.249 | 0.706500K: 0.705 | 27.3middle or higher | stablePP difference 5.2% | 83.235 km2,359 vertices · 1 part · 0 holes |
| SC · State Senate District 12GEOID 45012 · effective 2024-01-01 | State legislative upper chamber | 0.236500K: 0.242 | 0.708500K: 0.708 | 27.4middle or higher | stablePP difference 2.7% | 143.325 km3,676 vertices · 1 part · 0 holes |
| NM · State Senate District 35GEOID 35035 · effective 2024-01-01 | State legislative upper chamber | 0.236500K: 0.239 | 0.820500K: 0.820 | 27.4middle or higher | stablePP difference 1.3% | 1,698.042 km18,567 vertices · 1 part · 0 holes |
| PA · State Senate District 37GEOID 42037 · effective 2024-01-01 | State legislative upper chamber | 0.236500K: 0.242 | 0.646500K: 0.646 | 27.5middle or higher | stablePP difference 2.6% | 186.346 km3,093 vertices · 1 part · 0 holes |
| CT · State House District 103GEOID 09103 · effective 2024-01-01 | State legislative lower chamber | 0.236500K: 0.242 | 0.604500K: 0.604 | 22.2lower quartile | stablePP difference 2.6% | 59.908 km1,298 vertices · 1 part · 0 holes |
| MN · State House District 53BGEOID 2753B · effective 2024-01-01 | State legislative lower chamber | 0.236500K: 0.238 | 0.608500K: 0.608 | 22.2lower quartile | stablePP difference 1.1% | 55.453 km736 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