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 1–100 of 7,272
| District | Type | Polsby–Popper | Convex hull | Relative percentile | Resolution check | Boundary detail |
|---|---|---|---|---|---|---|
| ME · State House District 26GEOID 23026 · effective 2024-01-01 | State legislative lower chamber | 0.033500K: 0.037 | 0.143500K: 0.143 | 0.0lower decile | stablePP difference 9.4% | 336.556 km9,658 vertices · 1 part · 8 holes |
| TX · Congressional District 33GEOID 4833 · effective 2024-01-01 | U.S. House | 0.038500K: 0.040 | 0.390500K: 0.390 | 0.0lower decile | stablePP difference 5.0% | 441.044 km9,689 vertices · 1 part · 0 holes |
| AK · State Senate District SGEOID 0200S · effective 2024-01-01 | State legislative upper chamber | 0.042500K: 0.016 | 0.240500K: 0.185 | 0.0lower decile | resolution sensitivePP difference 61.1% | 10,788.583 km13,891 vertices · 41 parts · 0 holes |
| AK · State House District 37GEOID 02037 · effective 2024-01-01 | State legislative lower chamber | 0.042500K: 0.015 | 0.216500K: 0.159 | 0.0lower decile | resolution sensitivePP difference 64.2% | 9,664.826 km13,316 vertices · 38 parts · 0 holes |
| LA · State Senate District 29GEOID 22029 · effective 2024-01-01 | State legislative upper chamber | 0.046500K: 0.050 | 0.344500K: 0.344 | 0.1lower decile | stablePP difference 7.3% | 935.1 km19,507 vertices · 1 part · 1 hole |
| MD · State Legislative Subdistrict 37AGEOID 2437A · effective 2024-01-01 | State legislative lower chamber | 0.047500K: 0.051 | 0.376500K: 0.376 | 0.0lower decile | stablePP difference 8.8% | 326.047 km9,424 vertices · 1 part · 0 holes |
| LA · Congressional District 6GEOID 2206 · effective 2024-01-01 | U.S. House | 0.052500K: 0.055 | 0.431500K: 0.431 | 0.2lower decile | stablePP difference 4.6% | 1,774.205 km31,726 vertices · 1 part · 0 holes |
| LA · State House District 21GEOID 22021 · effective 2024-01-01 | State legislative lower chamber | 0.053500K: 0.054 | 0.490500K: 0.491 | 0.1lower decile | stablePP difference 1.6% | 1,139.514 km11,638 vertices · 1 part · 0 holes |
| CA · Congressional District 41GEOID 0641 · effective 2024-01-01 | U.S. House | 0.060500K: 0.062 | 0.633500K: 0.633 | 0.5lower decile | stablePP difference 3.7% | 853.163 km14,490 vertices · 1 part · 0 holes |
| MD · State Legislative Subdistrict 2BGEOID 2402B · effective 2024-01-01 | State legislative lower chamber | 0.060500K: 0.075 | 0.630500K: 0.634 | 0.1lower decile | stablePP difference 19.4% | 81.907 km2,083 vertices · 1 part · 0 holes |
| TN · State Senate District 19GEOID 47019 · effective 2024-01-01 | State legislative upper chamber | 0.065500K: 0.068 | 0.479500K: 0.479 | 0.1lower decile | stablePP difference 5.1% | 244.728 km7,233 vertices · 1 part · 0 holes |
| HI · Congressional District 2GEOID 1502 · effective 2024-01-01 | U.S. House | 0.065500K: 0.081 | 0.068500K: 0.044 | 0.7lower decile | resolution sensitivePP difference 20.3% | 2,311.912 km5,324 vertices · 17 parts · 0 holes |
| AK · Congressional District (at Large)GEOID 0200 · effective 2024-01-01 | U.S. House | 0.066500K: 0.011 | 0.396500K: 0.353 | 0.9lower decile | resolution sensitivePP difference 83.4% | 18,100.482 km15,279 vertices · 50 parts · 0 holes |
| AL · State House District 32GEOID 01032 · effective 2024-01-01 | State legislative lower chamber | 0.068500K: 0.070 | 0.540500K: 0.540 | 0.1lower decile | stablePP difference 3.2% | 358.783 km5,853 vertices · 1 part · 0 holes |
| TX · Congressional District 18GEOID 4818 · effective 2024-01-01 | U.S. House | 0.068500K: 0.069 | 0.539500K: 0.539 | 1.1lower decile | stablePP difference 2.2% | 333.932 km4,948 vertices · 1 part · 0 holes |
| WI · Assembly District 73GEOID 55073 · effective 2024-01-01 | State legislative lower chamber | 0.070500K: 0.089 | 0.564500K: 0.565 | 0.1lower decile | resolution sensitivePP difference 21.4% | 857.119 km23,001 vertices · 24 parts · 0 holes |
| TX · State House District 90GEOID 48090 · effective 2024-01-01 | State legislative lower chamber | 0.070500K: 0.072 | 0.495500K: 0.496 | 0.1lower decile | stablePP difference 3.5% | 159.493 km2,842 vertices · 1 part · 0 holes |
| LA · State Senate District 2GEOID 22002 · effective 2024-01-01 | State legislative upper chamber | 0.070500K: 0.071 | 0.469500K: 0.469 | 0.1lower decile | stablePP difference 1.8% | 599.376 km8,181 vertices · 1 part · 0 holes |
| IL · Congressional District 5GEOID 1705 · effective 2024-01-01 | U.S. House | 0.070500K: 0.072 | 0.482500K: 0.483 | 1.4lower decile | stablePP difference 2.6% | 271.253 km7,578 vertices · 1 part · 0 holes |
| TX · State Senate District 6GEOID 48006 · effective 2024-01-01 | State legislative upper chamber | 0.070500K: 0.071 | 0.581500K: 0.581 | 0.2lower decile | stablePP difference 1.7% | 395.343 km5,202 vertices · 1 part · 0 holes |
| OH · State House District 27GEOID 39027 · effective 2024-01-01 | State legislative lower chamber | 0.071500K: 0.076 | 0.495500K: 0.496 | 0.2lower decile | stablePP difference 6.1% | 193.223 km4,837 vertices · 1 part · 0 holes |
| IL · State House District 26GEOID 17026 · effective 2024-01-01 | State legislative lower chamber | 0.072500K: 0.074 | 0.382500K: 0.330 | 0.2lower decile | resolution sensitivePP difference 3.7% | 62.798 km1,546 vertices · 1 part · 0 holes |
| LA · State Senate District 34GEOID 22034 · effective 2024-01-01 | State legislative upper chamber | 0.072500K: 0.073 | 0.546500K: 0.547 | 0.3lower decile | stablePP difference 1.9% | 1,122.154 km13,321 vertices · 1 part · 0 holes |
| TX · State Senate District 15GEOID 48015 · effective 2024-01-01 | State legislative upper chamber | 0.072500K: 0.074 | 0.498500K: 0.498 | 0.3lower decile | stablePP difference 1.8% | 341.83 km5,026 vertices · 1 part · 0 holes |
| TN · State House District 3GEOID 47003 · effective 2024-01-01 | State legislative lower chamber | 0.073500K: 0.076 | 0.410500K: 0.410 | 0.2lower decile | stablePP difference 4.2% | 554.444 km15,909 vertices · 1 part · 0 holes |
| CA · State Senate District 31GEOID 06031 · effective 2024-01-01 | State legislative upper chamber | 0.074500K: 0.075 | 0.550500K: 0.550 | 0.4lower decile | stablePP difference 2.3% | 388.62 km6,917 vertices · 1 part · 0 holes |
| SC · Congressional District 6GEOID 4506 · effective 2024-01-01 | U.S. House | 0.074500K: 0.080 | 0.577500K: 0.588 | 1.6lower decile | stablePP difference 7.6% | 1,767.762 km36,611 vertices · 1 part · 0 holes |
| PR · State House District 30GEOID 72030 · effective 2024-01-01 | State legislative lower chamber | 0.074500K: 0.197 | 0.644500K: 0.687 | 0.2lower decile | resolution sensitivePP difference 62.1% | 266.607 km12,522 vertices · 67 parts · 0 holes |
| AL · State House District 36GEOID 01036 · effective 2024-01-01 | State legislative lower chamber | 0.075500K: 0.078 | 0.454500K: 0.454 | 0.3lower decile | stablePP difference 3.8% | 322.59 km5,722 vertices · 1 part · 0 holes |
| TX · Congressional District 4GEOID 4804 · effective 2024-01-01 | U.S. House | 0.076500K: 0.079 | 0.526500K: 0.526 | 1.8lower decile | stablePP difference 4.0% | 1,525.257 km22,067 vertices · 1 part · 0 holes |
| TX · Congressional District 32GEOID 4832 · effective 2024-01-01 | U.S. House | 0.077500K: 0.080 | 0.482500K: 0.483 | 2.0lower decile | stablePP difference 3.4% | 252.955 km5,076 vertices · 1 part · 0 holes |
| MP · Delegate District (at Large)GEOID 6998 · effective 2024-01-01 | U.S. House | 0.077500K: 0.049 | 0.080500K: 0.009 | 2.3lower decile | resolution sensitivePP difference 36.9% | 915.603 km806 vertices · 12 parts · 0 holes |
| GA · State Senate District 38GEOID 13038 · effective 2024-01-01 | State legislative upper chamber | 0.077500K: 0.081 | 0.413500K: 0.413 | 0.4lower decile | stablePP difference 4.7% | 229.408 km4,385 vertices · 1 part · 0 holes |
| TX · State House District 94GEOID 48094 · effective 2024-01-01 | State legislative lower chamber | 0.078500K: 0.080 | 0.501500K: 0.502 | 0.3lower decile | stablePP difference 2.9% | 165.416 km2,897 vertices · 1 part · 0 holes |
| TX · Congressional District 35GEOID 4835 · effective 2024-01-01 | U.S. House | 0.078500K: 0.080 | 0.440500K: 0.440 | 2.5lower decile | stablePP difference 2.4% | 468.394 km7,714 vertices · 1 part · 0 holes |
| IL · Congressional District 3GEOID 1703 · effective 2024-01-01 | U.S. House | 0.079500K: 0.082 | 0.415500K: 0.415 | 2.7lower decile | stablePP difference 3.5% | 253.325 km6,162 vertices · 1 part · 0 holes |
| CA · Congressional District 45GEOID 0645 · effective 2024-01-01 | U.S. House | 0.079500K: 0.082 | 0.524500K: 0.524 | 3.0lower decile | stablePP difference 3.1% | 206.401 km4,560 vertices · 1 part · 0 holes |
| IL · Congressional District 17GEOID 1717 · effective 2024-01-01 | U.S. House | 0.081500K: 0.081 | 0.348500K: 0.348 | 3.2lower decile | stablePP difference 1.0% | 1,356.768 km14,081 vertices · 1 part · 0 holes |
| KY · State Senate District 26GEOID 21026 · effective 2024-01-01 | State legislative upper chamber | 0.081500K: 0.085 | 0.372500K: 0.372 | 0.5lower decile | stablePP difference 4.5% | 128.527 km3,988 vertices · 1 part · 0 holes |
| LA · Congressional District 4GEOID 2204 · effective 2024-01-01 | U.S. House | 0.082500K: 0.088 | 0.705500K: 0.705 | 3.4lower decile | stablePP difference 6.9% | 2,451.65 km38,241 vertices · 1 part · 0 holes |
| TN · State Senate District 20GEOID 47020 · effective 2024-01-01 | State legislative upper chamber | 0.082500K: 0.084 | 0.505500K: 0.505 | 0.5lower decile | stablePP difference 2.7% | 335.265 km8,057 vertices · 1 part · 0 holes |
| LA · Congressional District 5GEOID 2205 · effective 2024-01-01 | U.S. House | 0.082500K: 0.085 | 0.535500K: 0.535 | 3.6lower decile | stablePP difference 3.8% | 2,072.243 km29,668 vertices · 1 part · 0 holes |
| MA · 18th Suffolk DistrictGEOID 25140 · effective 2024-01-01 | State legislative lower chamber | 0.082500K: 0.087 | 0.439500K: 0.441 | 0.3lower decile | stablePP difference 5.7% | 36.752 km1,057 vertices · 1 part · 0 holes |
| TX · State House District 35GEOID 48035 · effective 2024-01-01 | State legislative lower chamber | 0.082500K: 0.084 | 0.518500K: 0.519 | 0.3lower decile | stablePP difference 2.1% | 671.581 km7,810 vertices · 1 part · 0 holes |
| HI · State Senate District 25GEOID 15025 · effective 2024-01-01 | State legislative upper chamber | 0.083500K: 0.103 | 0.012500K: 0.000 | 0.6lower decile | resolution sensitivePP difference 19.4% | 670.006 km1,798 vertices · 10 parts · 0 holes |
| OH · State House District 49GEOID 39049 · effective 2024-01-01 | State legislative lower chamber | 0.083500K: 0.090 | 0.601500K: 0.602 | 0.3lower decile | stablePP difference 8.1% | 157.846 km2,226 vertices · 1 part · 0 holes |
| MS · State Senate District 23GEOID 28023 · effective 2024-01-01 | State legislative upper chamber | 0.083500K: 0.085 | 0.581500K: 0.581 | 0.6lower decile | stablePP difference 2.5% | 799.386 km10,008 vertices · 1 part · 0 holes |
| PR · State House District 36GEOID 72036 · effective 2024-01-01 | State legislative lower chamber | 0.083500K: 0.062 | 0.381500K: 0.274 | 0.3lower decile | resolution sensitivePP difference 26.1% | 309.253 km3,144 vertices · 3 parts · 0 holes |
| MD · State Senate District 24GEOID 24024 · effective 2024-01-01 | State legislative upper chamber | 0.083500K: 0.089 | 0.571500K: 0.571 | 0.7lower decile | stablePP difference 6.8% | 122.463 km4,057 vertices · 1 part · 0 holes |
| MD · State Legislative District 24GEOID 24024 · effective 2024-01-01 | State legislative lower chamber | 0.083500K: 0.089 | 0.571500K: 0.571 | 0.4lower decile | stablePP difference 6.8% | 122.463 km4,057 vertices · 1 part · 0 holes |
| SC · State House District 57GEOID 45057 · effective 2024-01-01 | State legislative lower chamber | 0.084500K: 0.086 | 0.491500K: 0.491 | 0.4lower decile | stablePP difference 2.6% | 526.468 km9,103 vertices · 1 part · 0 holes |
| TX · State Senate District 16GEOID 48016 · effective 2024-01-01 | State legislative upper chamber | 0.085500K: 0.087 | 0.506500K: 0.506 | 0.7lower decile | stablePP difference 1.8% | 316.805 km4,782 vertices · 1 part · 0 holes |
| LA · State Senate District 6GEOID 22006 · effective 2024-01-01 | State legislative upper chamber | 0.086500K: 0.092 | 0.476500K: 0.476 | 0.8lower decile | stablePP difference 6.6% | 516.937 km14,315 vertices · 1 part · 0 holes |
| IA · State House District 39GEOID 19039 · effective 2024-01-01 | State legislative lower chamber | 0.086500K: 0.091 | 0.579500K: 0.579 | 0.4lower decile | stablePP difference 5.0% | 91.434 km1,329 vertices · 1 part · 0 holes |
| KY · State House District 94GEOID 21094 · effective 2024-01-01 | State legislative lower chamber | 0.086500K: 0.091 | 0.478500K: 0.479 | 0.4lower decile | stablePP difference 4.8% | 535.399 km13,481 vertices · 1 part · 0 holes |
| TX · State House District 21GEOID 48021 · effective 2024-01-01 | State legislative lower chamber | 0.088500K: 0.091 | 0.526500K: 0.521 | 0.5lower decile | stablePP difference 3.4% | 910.699 km11,206 vertices · 1 part · 0 holes |
| LA · State Senate District 4GEOID 22004 · effective 2024-01-01 | State legislative upper chamber | 0.088500K: 0.092 | 0.488500K: 0.489 | 0.8lower decile | stablePP difference 4.7% | 95.34 km2,035 vertices · 1 part · 0 holes |
| TX · State House District 148GEOID 48148 · effective 2024-01-01 | State legislative lower chamber | 0.088500K: 0.090 | 0.439500K: 0.439 | 0.5lower decile | stablePP difference 1.9% | 132.417 km2,297 vertices · 1 part · 0 holes |
| OH · State Senate District 9GEOID 39009 · effective 2024-01-01 | State legislative upper chamber | 0.088500K: 0.095 | 0.539500K: 0.539 | 0.9lower decile | stablePP difference 7.6% | 181.42 km4,824 vertices · 1 part · 0 holes |
| HI · State House District 51GEOID 15051 · effective 2024-01-01 | State legislative lower chamber | 0.088500K: 0.089 | 0.012500K: 0.000 | 0.5lower decile | resolution sensitivePP difference 0.8% | 630.362 km1,875 vertices · 10 parts · 0 holes |
| LA · State House District 24GEOID 22024 · effective 2024-01-01 | State legislative lower chamber | 0.089500K: 0.098 | 0.586500K: 0.586 | 0.5lower decile | stablePP difference 9.8% | 887.935 km16,048 vertices · 1 part · 0 holes |
| SC · State Senate District 44GEOID 45044 · effective 2024-01-01 | State legislative upper chamber | 0.089500K: 0.091 | 0.456500K: 0.456 | 0.9lower decile | stablePP difference 2.7% | 149.595 km3,737 vertices · 1 part · 0 holes |
| MT · State House District 31GEOID 30031 · effective 2024-01-01 | State legislative lower chamber | 0.089500K: 0.091 | 0.558500K: 0.558 | 0.5lower decile | stablePP difference 2.0% | 1,130.908 km15,026 vertices · 1 part · 0 holes |
| TX · State House District 95GEOID 48095 · effective 2024-01-01 | State legislative lower chamber | 0.089500K: 0.097 | 0.592500K: 0.593 | 0.6lower decile | stablePP difference 7.9% | 154.06 km4,670 vertices · 1 part · 0 holes |
| CO · Congressional District 1GEOID 0801 · effective 2024-01-01 | U.S. House | 0.089500K: 0.092 | 0.494500K: 0.494 | 3.9lower decile | stablePP difference 2.7% | 238.022 km3,109 vertices · 1 part · 0 holes |
| PA · State House District 19GEOID 42019 · effective 2024-01-01 | State legislative lower chamber | 0.090500K: 0.098 | 0.444500K: 0.448 | 0.6lower decile | stablePP difference 7.8% | 68.551 km2,490 vertices · 1 part · 0 holes |
| MA · 17th Suffolk DistrictGEOID 25139 · effective 2024-01-01 | State legislative lower chamber | 0.091500K: 0.098 | 0.470500K: 0.473 | 0.6lower decile | stablePP difference 6.4% | 26.601 km768 vertices · 1 part · 0 holes |
| AL · State House District 46GEOID 01046 · effective 2024-01-01 | State legislative lower chamber | 0.092500K: 0.097 | 0.456500K: 0.456 | 0.6lower decile | stablePP difference 5.6% | 86.081 km1,956 vertices · 1 part · 0 holes |
| TX · Congressional District 29GEOID 4829 · effective 2024-01-01 | U.S. House | 0.092500K: 0.093 | 0.573500K: 0.573 | 4.1lower decile | stablePP difference 1.8% | 272.601 km3,914 vertices · 1 part · 0 holes |
| TX · Congressional District 7GEOID 4807 · effective 2024-01-01 | U.S. House | 0.092500K: 0.093 | 0.476500K: 0.476 | 4.3lower decile | stablePP difference 1.7% | 217.074 km3,603 vertices · 1 part · 0 holes |
| CO · State Senate District 13GEOID 08013 · effective 2024-01-01 | State legislative upper chamber | 0.092500K: 0.094 | 0.472500K: 0.472 | 1.0lower decile | stablePP difference 1.7% | 260.619 km2,649 vertices · 1 part · 0 holes |
| WI · Assembly District 1GEOID 55001 · effective 2024-01-01 | State legislative lower chamber | 0.092500K: 0.125 | 0.550500K: 0.583 | 0.6lower decile | resolution sensitivePP difference 25.9% | 570.607 km35,404 vertices · 17 parts · 0 holes |
| MS · State Senate District 12GEOID 28012 · effective 2024-01-01 | State legislative upper chamber | 0.093500K: 0.093 | 0.562500K: 0.562 | 1.0lower decile | stablePP difference 0.6% | 811.097 km13,026 vertices · 1 part · 0 holes |
| MS · State House District 37GEOID 28037 · effective 2024-01-01 | State legislative lower chamber | 0.093500K: 0.097 | 0.460500K: 0.460 | 0.7lower decile | stablePP difference 3.8% | 355.135 km8,518 vertices · 1 part · 0 holes |
| MA · Congressional District 7GEOID 2507 · effective 2024-01-01 | U.S. House | 0.093500K: 0.097 | 0.484500K: 0.484 | 4.5lower decile | stablePP difference 3.8% | 152.697 km3,700 vertices · 1 part · 0 holes |
| CA · State Senate District 22GEOID 06022 · effective 2024-01-01 | State legislative upper chamber | 0.093500K: 0.099 | 0.500500K: 0.500 | 1.1lower decile | stablePP difference 5.3% | 317.606 km6,631 vertices · 1 part · 0 holes |
| KY · Congressional District 1GEOID 2101 · effective 2024-01-01 | U.S. House | 0.094500K: 0.096 | 0.487500K: 0.487 | 4.8lower decile | stablePP difference 2.7% | 2,036.498 km27,983 vertices · 2 parts · 0 holes |
| PR · State Senate District 8GEOID 72008 · effective 2024-01-01 | State legislative upper chamber | 0.094500K: 0.081 | 0.446500K: 0.373 | 1.1lower decile | resolution sensitivePP difference 13.4% | 377.947 km5,492 vertices · 4 parts · 0 holes |
| AK · State House District 5GEOID 02005 · effective 2024-01-01 | State legislative lower chamber | 0.094500K: 0.009 | 0.444500K: 0.288 | 0.7lower decile | resolution sensitivePP difference 90.1% | 2,884.23 km10,132 vertices · 4 parts · 0 holes |
| NY · Assembly District 61GEOID 36061 · effective 2024-01-01 | State legislative lower chamber | 0.096500K: 0.108 | 0.447500K: 0.222 | 0.7lower decile | resolution sensitivePP difference 11.1% | 76.601 km1,212 vertices · 3 parts · 0 holes |
| OH · State Senate District 25GEOID 39025 · effective 2024-01-01 | State legislative upper chamber | 0.096500K: 0.104 | 0.533500K: 0.537 | 1.2lower decile | stablePP difference 7.7% | 167.408 km2,841 vertices · 1 part · 0 holes |
| AL · State House District 55GEOID 01055 · effective 2024-01-01 | State legislative lower chamber | 0.096500K: 0.100 | 0.449500K: 0.449 | 0.7lower decile | stablePP difference 4.3% | 87.897 km1,323 vertices · 1 part · 0 holes |
| TN · State House District 93GEOID 47093 · effective 2024-01-01 | State legislative lower chamber | 0.096500K: 0.099 | 0.388500K: 0.388 | 0.7lower decile | stablePP difference 2.9% | 83.642 km2,341 vertices · 1 part · 0 holes |
| OH · State Senate District 8GEOID 39008 · effective 2024-01-01 | State legislative upper chamber | 0.097500K: 0.102 | 0.593500K: 0.594 | 1.2lower decile | stablePP difference 5.6% | 299.46 km6,789 vertices · 1 part · 0 holes |
| TN · State House District 18GEOID 47018 · effective 2024-01-01 | State legislative lower chamber | 0.097500K: 0.104 | 0.602500K: 0.602 | 0.8lower decile | stablePP difference 6.6% | 150.108 km5,923 vertices · 1 part · 0 holes |
| TN · State House District 96GEOID 47096 · effective 2024-01-01 | State legislative lower chamber | 0.097500K: 0.099 | 0.396500K: 0.396 | 0.8lower decile | stablePP difference 1.6% | 102.342 km2,597 vertices · 1 part · 0 holes |
| WV · State Senate District 6GEOID 54006 · effective 2024-01-01 | State legislative upper chamber | 0.097500K: 0.104 | 0.504500K: 0.504 | 1.3lower decile | stablePP difference 6.6% | 720.035 km17,625 vertices · 1 part · 0 holes |
| OH · State House District 50GEOID 39050 · effective 2024-01-01 | State legislative lower chamber | 0.097500K: 0.102 | 0.537500K: 0.537 | 0.8lower decile | stablePP difference 4.4% | 275.723 km3,042 vertices · 1 part · 0 holes |
| CA · Congressional District 20GEOID 0620 · effective 2024-01-01 | U.S. House | 0.097500K: 0.099 | 0.599500K: 0.599 | 5.0lower decile | stablePP difference 1.9% | 1,802.84 km20,964 vertices · 1 part · 0 holes |
| CO · Congressional District 6GEOID 0806 · effective 2024-01-01 | U.S. House | 0.098500K: 0.100 | 0.658500K: 0.659 | 5.2lower decile | stablePP difference 2.1% | 321.783 km3,649 vertices · 1 part · 0 holes |
| TX · State House District 92GEOID 48092 · effective 2024-01-01 | State legislative lower chamber | 0.098500K: 0.099 | 0.586500K: 0.587 | 0.8lower decile | stablePP difference 1.8% | 121.39 km1,673 vertices · 1 part · 0 holes |
| IA · State House District 43GEOID 19043 · effective 2024-01-01 | State legislative lower chamber | 0.098500K: 0.102 | 0.645500K: 0.644 | 0.8lower decile | stablePP difference 3.5% | 104.607 km1,463 vertices · 1 part · 0 holes |
| IL · Congressional District 16GEOID 1716 · effective 2024-01-01 | U.S. House | 0.098500K: 0.099 | 0.578500K: 0.578 | 5.5lower decile | stablePP difference 0.8% | 1,726.867 km17,422 vertices · 1 part · 0 holes |
| WI · State Senate District 1GEOID 55001 · effective 2024-01-01 | State legislative upper chamber | 0.098500K: 0.124 | 0.569500K: 0.586 | 1.3lower decile | resolution sensitivePP difference 20.5% | 781.534 km39,582 vertices · 17 parts · 0 holes |
| TN · State Senate District 7GEOID 47007 · effective 2024-01-01 | State legislative upper chamber | 0.099500K: 0.102 | 0.563500K: 0.563 | 1.4lower decile | stablePP difference 2.9% | 212.005 km6,649 vertices · 1 part · 0 holes |
| MS · State House District 97GEOID 28097 · effective 2024-01-01 | State legislative lower chamber | 0.099500K: 0.103 | 0.580500K: 0.580 | 0.9lower decile | stablePP difference 3.7% | 423.064 km9,013 vertices · 1 part · 0 holes |
| AK · State Senate District CGEOID 0200C · effective 2024-01-01 | State legislative upper chamber | 0.099500K: 0.009 | 0.445500K: 0.298 | 1.4lower decile | resolution sensitivePP difference 90.6% | 3,034.587 km11,807 vertices · 4 parts · 0 holes |
| MA · 3rd Norfolk DistrictGEOID 25098 · effective 2024-01-01 | State legislative lower chamber | 0.099500K: 0.107 | 0.383500K: 0.384 | 0.9lower decile | stablePP difference 7.1% | 63.851 km1,213 vertices · 1 part · 0 holes |
| CA · Congressional District 19GEOID 0619 · effective 2024-01-01 | U.S. House | 0.100500K: 0.076 | 0.449500K: 0.378 | 5.7lower decile | resolution sensitivePP difference 24.4% | 1,080.93 km15,848 vertices · 1 part · 0 holes |
| OH · State House District 33GEOID 39033 · effective 2024-01-01 | State legislative lower chamber | 0.100500K: 0.109 | 0.581500K: 0.584 | 0.9lower decile | stablePP difference 8.0% | 112.878 km2,488 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