Idaho / ID-02
Idaho District 2
Score
Irregularity score 13 Very compactLess compact than 7% of other congressional districts.
400th least compact of 429 nationally, 2nd of 2 in Idaho.
A score describes shape, not intent. Coastlines, rivers and the Voting Rights Act can all make a district irregular. How scores work
The three measures
- Polsby-Popper
- 0.33at least as compact as 76% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
- Reock
- 0.84at least as compact as 98% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
- Convex hull
- 0.89at least as compact as 87% of districts on this measure
Area compared with a rubber band stretched around the district, counting only land. Low for bites and tentacles.
Each measure runs from 0 to 1, where 1 is a perfect circle or a shape with no dents.
The state's edge
57% of this district's border is the state's edge: a coastline, a national border or a state line. Mapmakers don't choose those lines. A ragged one, like a coastline or a river, lowers Polsby-Popper. Reock and convex hull count only the state's own land, so water and neighboring states don't count against them. More on the state's edge
Cities and towns
The largest places with people in this district, from the 2020 Census. A place split between districts shows how many of its residents live in this one.
- Boise City city231,932 of its 235,684 residents
- Idaho Falls cityall 64,818 residents
- Pocatello cityall 56,320 residents
- Twin Falls cityall 51,807 residents
- Rexburg cityall 39,409 residents
- Ammon cityall 17,694 residents
- Mountain Home cityall 15,979 residents
- Chubbuck cityall 15,570 residents
- Jerome cityall 12,349 residents
- Blackfoot cityall 12,346 residents
And 112 smaller places. 25% of this district's people live outside any city, town or named community. How places are counted
ZIP codes
152 ZIP codes have residents in this district. 16 of them are split with other districts. A percentage is the share of that ZIP code's 2020 residents who live here.
Show all 152 ZIP codes
- 83120 (14%)
- 83127 (3%)
- 83201
- 83202
- 83203
- 83204
- 83209
- 83210
- 83211
- 83212
- 83213
- 83214
- 83215
- 83217
- 83218
- 83220
- 83221
- 83223
- 83226
- 83227
- 83228
- 83232
- 83233
- 83234
- 83235
- 83236
- 83237
- 83238
- 83239
- 83241
- 83243
- 83244
- 83245
- 83246
- 83250
- 83251
- 83252
- 83253
- 83254
- 83255
- 83261
- 83262
- 83263
- 83271
- 83272
- 83274
- 83276
- 83277
- 83278
- 83281
- 83283
- 83285
- 83286
- 83287
- 83301
- 83302 (66%)
- 83311
- 83312
- 83313
- 83314
- 83316
- 83318
- 83320
- 83321
- 83322
- 83323
- 83324
- 83325
- 83327
- 83328
- 83330
- 83332
- 83333
- 83334
- 83335
- 83336
- 83337
- 83338
- 83340
- 83341
- 83342 (94%)
- 83344
- 83346
- 83347
- 83348
- 83349
- 83350
- 83352
- 83353
- 83354
- 83355
- 83401
- 83402
- 83404
- 83406
- 83420
- 83421
- 83422
- 83423
- 83424
- 83425
- 83427
- 83428
- 83429
- 83431
- 83433
- 83434
- 83435
- 83436
- 83438
- 83440
- 83442
- 83443
- 83444
- 83445
- 83446
- 83448
- 83449
- 83450
- 83451
- 83452
- 83454
- 83455
- 83460
- 83462
- 83463
- 83464
- 83465
- 83466
- 83467
- 83468
- 83469
- 83616 (11%)
- 83623
- 83624 (20%)
- 83627 (85%)
- 83633
- 83642 (7%)
- 83646 (3%)
- 83647 (99%)
- 83648
- 83702 (99%)
- 83703
- 83704
- 83705 (99%)
- 83706
- 83709 (40%)
- 83712
- 83713 (89%)
- 83714 (99%)
- 83716 (88%)
- 83725
These are the Census Bureau's ZIP code areas, which match residential ZIP codes closely. ZIP codes used only for PO boxes or a single organization aren't included. How ZIP codes are matched
2024 presidential vote
Shares of the votes for the two of them; other candidates are left out. Idaho used the same lines in 2024, so this is added up from precinct results. A precinct split between districts is divided by its House votes, so the figures are close estimates. Where the votes come from
U.S. House
Mike Simpson, Republican
Elected November 3, 2026, takes office January 3, 2027.
Unofficial results from the Idaho Secretary of State, checked November 6, 2026. A race shows a winner once news decision desks have called it. Results become official when the state certifies them. Where this comes from
Idaho's senators
- Mike Crapo, Republican
- James E. Risch, RepublicanRe-elected November 3, 2026.
Senators are elected by the whole state, so district lines don't change who they are. Senators serving as of November 6, 2026. Senators elected in November 2026 take office January 3, 2027. Where this comes from
Where it sits in Idaho
- Very compact (0 to 19)
- Compact (20 to 39)
- Middle (40 to 59)
- Irregular (60 to 79)
- Very irregular (80 to 100)
Spot a problem with this district? Email us about ID-02.