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 301–400 of 7,272
| District | Type | Polsby–Popper | Convex hull | Relative percentile | Resolution check | Boundary detail |
|---|---|---|---|---|---|---|
| AL · State House District 60GEOID 01060 · effective 2024-01-01 | State legislative lower chamber | 0.134500K: 0.139 | 0.668500K: 0.668 | 3.2lower decile | stablePP difference 3.9% | 149.052 km2,270 vertices · 1 part · 0 holes |
| IL · State House District 96GEOID 17096 · effective 2024-01-01 | State legislative lower chamber | 0.134500K: 0.137 | 0.562500K: 0.562 | 3.3lower decile | stablePP difference 2.3% | 233.264 km4,312 vertices · 1 part · 0 holes |
| SC · State House District 113GEOID 45113 · effective 2024-01-01 | State legislative lower chamber | 0.134500K: 0.137 | 0.522500K: 0.523 | 3.3lower decile | stablePP difference 1.9% | 89.553 km1,642 vertices · 1 part · 0 holes |
| GA · State House District 115GEOID 13115 · effective 2024-01-01 | State legislative lower chamber | 0.134500K: 0.139 | 0.540500K: 0.540 | 3.3lower decile | stablePP difference 3.3% | 113.646 km2,995 vertices · 1 part · 0 holes |
| TX · State House District 14GEOID 48014 · effective 2024-01-01 | State legislative lower chamber | 0.134500K: 0.143 | 0.627500K: 0.627 | 3.3lower decile | stablePP difference 6.2% | 240.281 km5,462 vertices · 1 part · 0 holes |
| GA · State House District 53GEOID 13053 · effective 2024-01-01 | State legislative lower chamber | 0.134500K: 0.141 | 0.499500K: 0.500 | 3.4lower decile | stablePP difference 5.0% | 87.425 km3,113 vertices · 1 part · 0 holes |
| OH · State House District 31GEOID 39031 · effective 2024-01-01 | State legislative lower chamber | 0.134500K: 0.144 | 0.718500K: 0.718 | 3.4lower decile | stablePP difference 6.8% | 190.68 km2,978 vertices · 1 part · 0 holes |
| AL · State Senate District 17GEOID 01017 · effective 2024-01-01 | State legislative upper chamber | 0.135500K: 0.141 | 0.732500K: 0.732 | 4.5lower decile | stablePP difference 4.5% | 495.902 km11,135 vertices · 1 part · 0 holes |
| CA · State Senate District 30GEOID 06030 · effective 2024-01-01 | State legislative upper chamber | 0.135500K: 0.142 | 0.735500K: 0.735 | 4.6lower decile | stablePP difference 5.0% | 213.875 km4,763 vertices · 1 part · 0 holes |
| SC · State Senate District 35GEOID 45035 · effective 2024-01-01 | State legislative upper chamber | 0.135500K: 0.139 | 0.599500K: 0.599 | 4.7lower decile | stablePP difference 3.2% | 492.703 km9,576 vertices · 1 part · 0 holes |
| MD · State Legislative Subdistrict 2AGEOID 2402A · effective 2024-01-01 | State legislative lower chamber | 0.135500K: 0.143 | 0.580500K: 0.580 | 3.4lower decile | stablePP difference 5.4% | 282.521 km6,077 vertices · 1 part · 0 holes |
| KY · State Senate District 19GEOID 21019 · effective 2024-01-01 | State legislative upper chamber | 0.135500K: 0.141 | 0.506500K: 0.506 | 4.7lower decile | stablePP difference 4.6% | 88.223 km2,419 vertices · 1 part · 0 holes |
| AR · State Senate District 9GEOID 05009 · effective 2024-01-01 | State legislative upper chamber | 0.135500K: 0.137 | 0.703500K: 0.703 | 4.8lower decile | stablePP difference 1.0% | 693.39 km7,268 vertices · 1 part · 0 holes |
| TX · State House District 12GEOID 48012 · effective 2024-01-01 | State legislative lower chamber | 0.135500K: 0.143 | 0.638500K: 0.638 | 3.4lower decile | stablePP difference 5.1% | 970.591 km16,096 vertices · 1 part · 0 holes |
| CO · State House District 50GEOID 08050 · effective 2024-01-01 | State legislative lower chamber | 0.135500K: 0.140 | 0.555500K: 0.555 | 3.4lower decile | stablePP difference 3.4% | 87.471 km1,177 vertices · 1 part · 0 holes |
| MS · State Senate District 22GEOID 28022 · effective 2024-01-01 | State legislative upper chamber | 0.136500K: 0.139 | 0.603500K: 0.603 | 4.8lower decile | stablePP difference 2.3% | 587.189 km8,314 vertices · 1 part · 0 holes |
| KY · State Senate District 16GEOID 21016 · effective 2024-01-01 | State legislative upper chamber | 0.136500K: 0.139 | 0.539500K: 0.539 | 4.8lower decile | stablePP difference 2.0% | 663.663 km8,626 vertices · 1 part · 0 holes |
| WY · State Senate District 13GEOID 56013 · effective 2024-01-01 | State legislative upper chamber | 0.136500K: 0.139 | 0.534500K: 0.534 | 4.9lower decile | stablePP difference 2.6% | 82.224 km1,075 vertices · 1 part · 0 holes |
| MA · 10th Middlesex DistrictGEOID 25068 · effective 2024-01-01 | State legislative lower chamber | 0.136500K: 0.144 | 0.643500K: 0.645 | 3.5lower decile | stablePP difference 5.7% | 34.086 km935 vertices · 1 part · 0 holes |
| OH · State Senate District 6GEOID 39006 · effective 2024-01-01 | State legislative upper chamber | 0.136500K: 0.145 | 0.829500K: 0.829 | 5.0lower decile | stablePP difference 6.4% | 222.676 km2,953 vertices · 1 part · 0 holes |
| CA · State Senate District 40GEOID 06040 · effective 2024-01-01 | State legislative upper chamber | 0.136500K: 0.145 | 0.733500K: 0.733 | 5.0lower decile | stablePP difference 6.4% | 552.903 km15,080 vertices · 1 part · 0 holes |
| MI · State House District 58GEOID 26058 · effective 2024-01-01 | State legislative lower chamber | 0.136500K: 0.140 | 0.472500K: 0.471 | 3.5lower decile | stablePP difference 2.6% | 77.408 km1,007 vertices · 1 part · 0 holes |
| AL · State House District 54GEOID 01054 · effective 2024-01-01 | State legislative lower chamber | 0.137500K: 0.142 | 0.622500K: 0.624 | 3.5lower decile | stablePP difference 3.8% | 69.249 km1,110 vertices · 1 part · 0 holes |
| TN · State House District 58GEOID 47058 · effective 2024-01-01 | State legislative lower chamber | 0.137500K: 0.144 | 0.651500K: 0.651 | 3.5lower decile | stablePP difference 5.3% | 68.673 km2,135 vertices · 1 part · 0 holes |
| TX · State House District 22GEOID 48022 · effective 2024-01-01 | State legislative lower chamber | 0.137500K: 0.139 | 0.612500K: 0.612 | 3.5lower decile | stablePP difference 1.7% | 235.277 km2,468 vertices · 1 part · 0 holes |
| SC · State House District 119GEOID 45119 · effective 2024-01-01 | State legislative lower chamber | 0.137500K: 0.141 | 0.560500K: 0.560 | 3.5lower decile | stablePP difference 2.8% | 92.22 km3,250 vertices · 1 part · 0 holes |
| AL · State House District 45GEOID 01045 · effective 2024-01-01 | State legislative lower chamber | 0.137500K: 0.154 | 0.629500K: 0.631 | 3.6lower decile | stablePP difference 11.0% | 195.021 km8,195 vertices · 1 part · 0 holes |
| MD · State Senate District 1GEOID 24001 · effective 2024-01-01 | State legislative upper chamber | 0.137500K: 0.144 | 0.608500K: 0.608 | 5.1lower decile | stablePP difference 4.4% | 552.125 km10,920 vertices · 1 part · 0 holes |
| NC · State Senate District 21GEOID 37021 · effective 2024-01-01 | State legislative upper chamber | 0.137500K: 0.148 | 0.571500K: 0.571 | 5.1lower decile | stablePP difference 7.5% | 541.384 km19,287 vertices · 1 part · 0 holes |
| TX · Congressional District 17GEOID 4817 · effective 2024-01-01 | U.S. House | 0.138500K: 0.149 | 0.647500K: 0.647 | 12.1lower quartile | stablePP difference 7.8% | 1,589.027 km27,395 vertices · 1 part · 0 holes |
| PA · State Senate District 45GEOID 42045 · effective 2024-01-01 | State legislative upper chamber | 0.138500K: 0.144 | 0.580500K: 0.580 | 5.2lower decile | stablePP difference 4.6% | 198.463 km4,321 vertices · 1 part · 0 holes |
| TN · State House District 6GEOID 47006 · effective 2024-01-01 | State legislative lower chamber | 0.138500K: 0.142 | 0.498500K: 0.499 | 3.6lower decile | stablePP difference 2.8% | 194.702 km4,294 vertices · 1 part · 0 holes |
| TN · State House District 59GEOID 47059 · effective 2024-01-01 | State legislative lower chamber | 0.138500K: 0.140 | 0.403500K: 0.403 | 3.6lower decile | stablePP difference 1.7% | 136.705 km2,562 vertices · 1 part · 0 holes |
| TN · State House District 22GEOID 47022 · effective 2024-01-01 | State legislative lower chamber | 0.138500K: 0.141 | 0.572500K: 0.572 | 3.6lower decile | stablePP difference 2.3% | 461.46 km8,315 vertices · 1 part · 0 holes |
| IA · State Senate District 39GEOID 19039 · effective 2024-01-01 | State legislative upper chamber | 0.138500K: 0.142 | 0.668500K: 0.668 | 5.2lower decile | stablePP difference 3.1% | 118.008 km1,482 vertices · 1 part · 0 holes |
| MS · State House District 35GEOID 28035 · effective 2024-01-01 | State legislative lower chamber | 0.138500K: 0.145 | 0.650500K: 0.650 | 3.6lower decile | stablePP difference 4.7% | 464.071 km9,435 vertices · 1 part · 0 holes |
| IA · State House District 71GEOID 19071 · effective 2024-01-01 | State legislative lower chamber | 0.138500K: 0.149 | 0.497500K: 0.498 | 3.7lower decile | stablePP difference 7.1% | 56.797 km1,400 vertices · 1 part · 0 holes |
| AL · State Senate District 25GEOID 01025 · effective 2024-01-01 | State legislative upper chamber | 0.138500K: 0.146 | 0.653500K: 0.653 | 5.3lower decile | stablePP difference 5.3% | 630.358 km10,417 vertices · 1 part · 0 holes |
| LA · State Senate District 8GEOID 22008 · effective 2024-01-01 | State legislative upper chamber | 0.138500K: 0.048 | 0.541500K: 0.352 | 5.3lower decile | resolution sensitivePP difference 65.0% | 567.415 km6,056 vertices · 1 part · 0 holes |
| MS · State House District 80GEOID 28080 · effective 2024-01-01 | State legislative lower chamber | 0.138500K: 0.149 | 0.585500K: 0.586 | 3.7lower decile | stablePP difference 7.3% | 293.357 km8,378 vertices · 1 part · 0 holes |
| CA · Congressional District 38GEOID 0638 · effective 2024-01-01 | U.S. House | 0.138500K: 0.150 | 0.683500K: 0.683 | 12.3lower quartile | stablePP difference 7.5% | 188.269 km3,821 vertices · 1 part · 0 holes |
| IL · State House District 3GEOID 17003 · effective 2024-01-01 | State legislative lower chamber | 0.138500K: 0.141 | 0.510500K: 0.510 | 3.7lower decile | stablePP difference 1.6% | 35.872 km1,482 vertices · 1 part · 0 holes |
| WI · State Senate District 30GEOID 55030 · effective 2024-01-01 | State legislative upper chamber | 0.139500K: 0.163 | 0.638500K: 0.639 | 5.4lower decile | stablePP difference 14.9% | 151.674 km2,001 vertices · 2 parts · 0 holes |
| TX · State House District 143GEOID 48143 · effective 2024-01-01 | State legislative lower chamber | 0.139500K: 0.141 | 0.506500K: 0.506 | 3.7lower decile | stablePP difference 1.7% | 145.357 km2,279 vertices · 1 part · 0 holes |
| NY · Assembly District 136GEOID 36136 · effective 2024-01-01 | State legislative lower chamber | 0.139500K: 0.161 | 0.556500K: 0.505 | 3.8lower decile | stablePP difference 13.7% | 181.206 km1,768 vertices · 1 part · 0 holes |
| GA · State House District 89GEOID 13089 · effective 2024-01-01 | State legislative lower chamber | 0.139500K: 0.150 | 0.576500K: 0.576 | 3.8lower decile | stablePP difference 7.1% | 64.494 km1,467 vertices · 1 part · 0 holes |
| LA · State House District 66GEOID 22066 · effective 2024-01-01 | State legislative lower chamber | 0.139500K: 0.144 | 0.532500K: 0.532 | 3.8lower decile | stablePP difference 3.3% | 99.08 km2,177 vertices · 1 part · 0 holes |
| MA · Second Essex and Middlesex DistrictGEOID 25D20 · effective 2024-01-01 | State legislative upper chamber | 0.139500K: 0.143 | 0.564500K: 0.564 | 5.4lower decile | stablePP difference 2.8% | 181.166 km3,063 vertices · 1 part · 0 holes |
| TN · State House District 30GEOID 47030 · effective 2024-01-01 | State legislative lower chamber | 0.139500K: 0.146 | 0.595500K: 0.595 | 3.8lower decile | stablePP difference 4.3% | 115.273 km3,338 vertices · 1 part · 0 holes |
| TX · State Senate District 7GEOID 48007 · effective 2024-01-01 | State legislative upper chamber | 0.139500K: 0.149 | 0.634500K: 0.634 | 5.5lower decile | stablePP difference 6.5% | 316.193 km6,267 vertices · 1 part · 0 holes |
| GA · State House District 63GEOID 13063 · effective 2024-01-01 | State legislative lower chamber | 0.139500K: 0.143 | 0.494500K: 0.494 | 3.8lower decile | stablePP difference 2.8% | 77.27 km1,275 vertices · 1 part · 0 holes |
| CA · Congressional District 42GEOID 0642 · effective 2024-01-01 | U.S. House | 0.139500K: 0.067 | 0.335500K: 0.141 | 12.5lower quartile | resolution sensitivePP difference 52.1% | 393.959 km3,176 vertices · 3 parts · 0 holes |
| AL · State House District 28GEOID 01028 · effective 2024-01-01 | State legislative lower chamber | 0.140500K: 0.153 | 0.685500K: 0.685 | 3.9lower decile | stablePP difference 8.9% | 166.854 km4,176 vertices · 1 part · 0 holes |
| MS · State House District 119GEOID 28119 · effective 2024-01-01 | State legislative lower chamber | 0.140500K: 0.143 | 0.628500K: 0.628 | 3.9lower decile | stablePP difference 2.3% | 71.433 km1,033 vertices · 1 part · 0 holes |
| MD · State Senate District 33GEOID 24033 · effective 2024-01-01 | State legislative upper chamber | 0.140500K: 0.140 | 0.568500K: 0.579 | 5.5lower decile | stablePP difference 0.0% | 171.337 km3,606 vertices · 1 part · 0 holes |
| NC · Congressional District 13GEOID 3713 · effective 2024-01-01 | U.S. House | 0.140500K: 0.147 | 0.565500K: 0.565 | 12.7lower quartile | stablePP difference 4.5% | 935.48 km23,241 vertices · 1 part · 0 holes |
| MD · State Senate District 5GEOID 24005 · effective 2024-01-01 | State legislative upper chamber | 0.140500K: 0.149 | 0.614500K: 0.614 | 5.6lower decile | stablePP difference 5.9% | 276.248 km9,171 vertices · 1 part · 0 holes |
| MD · State Legislative District 5GEOID 24005 · effective 2024-01-01 | State legislative lower chamber | 0.140500K: 0.149 | 0.614500K: 0.614 | 3.9lower decile | stablePP difference 5.9% | 276.248 km9,171 vertices · 1 part · 0 holes |
| GA · State House District 60GEOID 13060 · effective 2024-01-01 | State legislative lower chamber | 0.140500K: 0.146 | 0.583500K: 0.583 | 3.9lower decile | stablePP difference 3.7% | 81.535 km1,843 vertices · 1 part · 0 holes |
| TX · State Senate District 30GEOID 48030 · effective 2024-01-01 | State legislative upper chamber | 0.140500K: 0.144 | 0.663500K: 0.663 | 5.6lower decile | stablePP difference 2.2% | 1,330.801 km15,574 vertices · 1 part · 0 holes |
| WA · Legislative (Senate) District 11GEOID 53011 · effective 2024-01-01 | State legislative upper chamber | 0.141500K: 0.151 | 0.611500K: 0.612 | 5.7lower decile | stablePP difference 7.1% | 97.821 km1,970 vertices · 1 part · 0 holes |
| WA · Legislative (House) District 11GEOID 53011 · effective 2024-01-01 | State legislative lower chamber | 0.141500K: 0.151 | 0.611500K: 0.612 | 3.9lower decile | stablePP difference 7.1% | 97.821 km1,970 vertices · 1 part · 0 holes |
| GA · State Senate District 55GEOID 13055 · effective 2024-01-01 | State legislative upper chamber | 0.141500K: 0.146 | 0.615500K: 0.615 | 5.7lower decile | stablePP difference 3.5% | 146.124 km3,434 vertices · 1 part · 0 holes |
| IL · State House District 28GEOID 17028 · effective 2024-01-01 | State legislative lower chamber | 0.141500K: 0.144 | 0.544500K: 0.544 | 4.0lower decile | stablePP difference 1.9% | 76.803 km2,453 vertices · 1 part · 0 holes |
| AL · Congressional District 2GEOID 0102 · effective 2024-01-01 | U.S. House | 0.141500K: 0.145 | 0.605500K: 0.605 | 12.9lower quartile | stablePP difference 2.7% | 1,484.893 km17,611 vertices · 1 part · 0 holes |
| AZ · State Senate District 21GEOID 04021 · effective 2024-01-01 | State legislative upper chamber | 0.141500K: 0.144 | 0.482500K: 0.482 | 5.8lower decile | stablePP difference 1.8% | 698.189 km8,092 vertices · 1 part · 0 holes |
| AZ · State House District 21GEOID 04021 · effective 2024-01-01 | State legislative lower chamber | 0.141500K: 0.144 | 0.482500K: 0.482 | 4.0lower decile | stablePP difference 1.8% | 698.189 km8,092 vertices · 1 part · 0 holes |
| IL · State Senate District 16GEOID 17016 · effective 2024-01-01 | State legislative upper chamber | 0.141500K: 0.144 | 0.574500K: 0.575 | 5.8lower decile | stablePP difference 2.1% | 79.142 km2,375 vertices · 1 part · 0 holes |
| WV · Delegate District 74GEOID 54074 · effective 2024-01-01 | State legislative lower chamber | 0.142500K: 0.147 | 0.512500K: 0.512 | 4.0lower decile | stablePP difference 3.5% | 192.515 km4,899 vertices · 1 part · 0 holes |
| WI · Assembly District 88GEOID 55088 · effective 2024-01-01 | State legislative lower chamber | 0.142500K: 0.151 | 0.565500K: 0.566 | 4.0lower decile | stablePP difference 6.2% | 99.742 km1,414 vertices · 1 part · 0 holes |
| CT · State House District 139GEOID 09139 · effective 2024-01-01 | State legislative lower chamber | 0.142500K: 0.146 | 0.455500K: 0.456 | 4.0lower decile | stablePP difference 3.1% | 91.386 km2,169 vertices · 1 part · 0 holes |
| SC · State House District 85GEOID 45085 · effective 2024-01-01 | State legislative lower chamber | 0.142500K: 0.153 | 0.640500K: 0.641 | 4.1lower decile | stablePP difference 7.4% | 120.481 km1,758 vertices · 1 part · 0 holes |
| IL · State House District 6GEOID 17006 · effective 2024-01-01 | State legislative lower chamber | 0.142500K: 0.144 | 0.436500K: 0.436 | 4.1lower decile | stablePP difference 1.6% | 45.579 km1,537 vertices · 1 part · 0 holes |
| CA · Congressional District 30GEOID 0630 · effective 2024-01-01 | U.S. House | 0.142500K: 0.157 | 0.635500K: 0.635 | 13.2lower quartile | stablePP difference 9.4% | 203.137 km5,531 vertices · 1 part · 0 holes |
| AR · State House District 62GEOID 05062 · effective 2024-01-01 | State legislative lower chamber | 0.142500K: 0.143 | 0.722500K: 0.722 | 4.1lower decile | stablePP difference 0.6% | 783.991 km7,747 vertices · 1 part · 0 holes |
| TN · State House District 28GEOID 47028 · effective 2024-01-01 | State legislative lower chamber | 0.142500K: 0.151 | 0.683500K: 0.685 | 4.1lower decile | stablePP difference 5.6% | 104.882 km3,579 vertices · 1 part · 0 holes |
| AL · State Senate District 7GEOID 01007 · effective 2024-01-01 | State legislative upper chamber | 0.142500K: 0.145 | 0.586500K: 0.586 | 5.9lower decile | stablePP difference 2.1% | 244.069 km4,116 vertices · 1 part · 0 holes |
| ME · State House District 110GEOID 23110 · effective 2024-01-01 | State legislative lower chamber | 0.142500K: 0.105 | 0.466500K: 0.376 | 4.2lower decile | resolution sensitivePP difference 26.6% | 119.241 km465 vertices · 1 part · 0 holes |
| IL · State House District 68GEOID 17068 · effective 2024-01-01 | State legislative lower chamber | 0.143500K: 0.148 | 0.574500K: 0.574 | 4.2lower decile | stablePP difference 3.5% | 105.446 km2,224 vertices · 1 part · 0 holes |
| VA · State House District 69GEOID 51069 · effective 2024-01-01 | State legislative lower chamber | 0.143500K: 0.122 | 0.555500K: 0.553 | 4.2lower decile | stablePP difference 14.5% | 258.59 km4,450 vertices · 1 part · 0 holes |
| CT · State Senate District 21GEOID 09021 · effective 2024-01-01 | State legislative upper chamber | 0.143500K: 0.148 | 0.503500K: 0.512 | 5.9lower decile | stablePP difference 3.4% | 131.33 km3,165 vertices · 1 part · 0 holes |
| NH · State Senate District 9GEOID 33009 · effective 2024-01-01 | State legislative upper chamber | 0.143500K: 0.144 | 0.559500K: 0.559 | 6.0lower decile | stablePP difference 0.4% | 300.888 km2,685 vertices · 1 part · 0 holes |
| CA · State Senate District 36GEOID 06036 · effective 2024-01-01 | State legislative upper chamber | 0.143500K: 0.090 | 0.654500K: 0.513 | 6.0lower decile | resolution sensitivePP difference 36.9% | 277.764 km4,157 vertices · 1 part · 0 holes |
| CO · State House District 12GEOID 08012 · effective 2024-01-01 | State legislative lower chamber | 0.143500K: 0.148 | 0.653500K: 0.653 | 4.2lower decile | stablePP difference 3.1% | 133.962 km2,378 vertices · 1 part · 0 holes |
| TX · State House District 48GEOID 48048 · effective 2024-01-01 | State legislative lower chamber | 0.143500K: 0.148 | 0.589500K: 0.589 | 4.2lower decile | stablePP difference 3.3% | 139.444 km3,127 vertices · 1 part · 0 holes |
| OH · Congressional District 15GEOID 3915 · effective 2024-01-01 | U.S. House | 0.143500K: 0.147 | 0.550500K: 0.550 | 13.4lower quartile | stablePP difference 2.5% | 663.885 km5,865 vertices · 1 part · 1 hole |
| MS · State House District 10GEOID 28010 · effective 2024-01-01 | State legislative lower chamber | 0.144500K: 0.146 | 0.705500K: 0.705 | 4.3lower decile | stablePP difference 1.6% | 282.497 km5,373 vertices · 1 part · 0 holes |
| TN · State House District 71GEOID 47071 · effective 2024-01-01 | State legislative lower chamber | 0.144500K: 0.149 | 0.601500K: 0.601 | 4.3lower decile | stablePP difference 3.5% | 562.929 km9,522 vertices · 1 part · 0 holes |
| WA · Congressional District 1GEOID 5301 · effective 2024-01-01 | U.S. House | 0.144500K: 0.152 | 0.662500K: 0.663 | 13.6lower quartile | stablePP difference 5.6% | 280.895 km6,225 vertices · 1 part · 0 holes |
| SC · Congressional District 1GEOID 4501 · effective 2024-01-01 | U.S. House | 0.144500K: 0.103 | 0.705500K: 0.647 | 13.9lower quartile | resolution sensitivePP difference 28.3% | 899.047 km9,838 vertices · 1 part · 0 holes |
| IL · State House District 49GEOID 17049 · effective 2024-01-01 | State legislative lower chamber | 0.144500K: 0.148 | 0.564500K: 0.564 | 4.3lower decile | stablePP difference 2.8% | 124.429 km2,415 vertices · 1 part · 0 holes |
| CT · State Senate District 13GEOID 09013 · effective 2024-01-01 | State legislative upper chamber | 0.144500K: 0.149 | 0.609500K: 0.609 | 6.1lower decile | stablePP difference 3.6% | 125.618 km2,296 vertices · 1 part · 0 holes |
| WV · Delegate District 55GEOID 54055 · effective 2024-01-01 | State legislative lower chamber | 0.144500K: 0.152 | 0.558500K: 0.558 | 4.3lower decile | stablePP difference 5.0% | 170.341 km4,338 vertices · 1 part · 0 holes |
| TN · State Senate District 9GEOID 47009 · effective 2024-01-01 | State legislative upper chamber | 0.144500K: 0.154 | 0.664500K: 0.665 | 6.1lower decile | stablePP difference 6.2% | 633.933 km15,487 vertices · 1 part · 0 holes |
| WA · Legislative (Senate) District 14GEOID 53014 · effective 2024-01-01 | State legislative upper chamber | 0.144500K: 0.147 | 0.656500K: 0.656 | 6.2lower decile | stablePP difference 2.3% | 942.314 km9,939 vertices · 1 part · 0 holes |
| WA · Legislative (House) District 14GEOID 53014 · effective 2024-01-01 | State legislative lower chamber | 0.144500K: 0.147 | 0.656500K: 0.656 | 4.3lower decile | stablePP difference 2.3% | 942.314 km9,939 vertices · 1 part · 0 holes |
| NM · State Senate District 6GEOID 35006 · effective 2024-01-01 | State legislative upper chamber | 0.144500K: 0.148 | 0.597500K: 0.597 | 6.2lower decile | stablePP difference 3.0% | 718.918 km15,205 vertices · 1 part · 0 holes |
| GA · State House District 116GEOID 13116 · effective 2024-01-01 | State legislative lower chamber | 0.144500K: 0.148 | 0.505500K: 0.506 | 4.3lower decile | stablePP difference 2.4% | 96.282 km2,077 vertices · 1 part · 0 holes |
| IA · State House District 40GEOID 19040 · effective 2024-01-01 | State legislative lower chamber | 0.144500K: 0.151 | 0.680500K: 0.681 | 4.4lower decile | stablePP difference 4.7% | 91.318 km1,017 vertices · 1 part · 0 holes |
| AL · State House District 52GEOID 01052 · effective 2024-01-01 | State legislative lower chamber | 0.144500K: 0.148 | 0.602500K: 0.602 | 4.4lower decile | stablePP difference 2.7% | 58.272 km1,008 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