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Largest Cities in Idaho: Ranked by Population

The largest city in Idaho in our data is Boise, ID, with an estimated 389,280 people, followed by Nampa, ID (184,428) and Coeur d'Alene, ID (116,834). This list ranks the top 34 places among the 34 Idaho communities with at least 5,000 residents.

What are the top 34 in Idaho?

#CityCountyPopulationPer sq mi
1Boise, IDAda County389,2802,735
2Nampa, IDCanyon County184,4283,023
3Coeur d'Alene, IDKootenai County116,8343,263
4Meridian, IDAda County114,1613,359
5Idaho Falls, IDBonneville County100,4422,618
6Pocatello, IDBannock County72,8781,702
7Caldwell, IDCanyon County58,4812,585
8Twin Falls, IDTwin Falls County55,5562,611
9Lewiston, IDNez Perce County53,3841,893
10Post Falls, IDKootenai County36,2502,396
11Rexburg, IDMadison County30,9792,937
12Eagle, IDAda County29,796974
13Moscow, IDLatah County26,1453,719
14Kuna, IDAda County22,2921,124
15Ammon, IDBonneville County17,1152,253
16Mountain Home, IDElmore County16,9452,401
17Burley, IDCassia County16,3421,694
18Chubbuck, IDBannock County15,5882,642
19Blackfoot, IDBingham County15,5262,031
20Hayden, IDKootenai County15,4341,481
21Sandpoint, IDBonner County13,1452,093
22Jerome, IDJerome County11,9962,150
23Garden City, IDAda County11,9692,932
24Hailey, IDBlaine County11,4092,209
25Star, IDAda County10,5321,500
26Emmett, IDGem County9,8892,510
27Rigby, IDJefferson County9,4961,821
28Rathdrum, IDKootenai County9,1501,746
29Middleton, IDCanyon County8,4661,528
30Payette, IDPayette County7,7271,940
31Rupert, IDMinidoka County6,7332,862
32Preston, IDFranklin County5,557816
33Weiser, IDWashington County5,5241,803
34Fruitland, IDPayette County5,4262,517

How big are the largest cities in Idaho?

Of the 34 places with pages, 5 have more than 100,000 residents, 8 have between 25,000 and 100,000, and 21 have fewer than 25,000. The median place has about 15,965 people. The ten largest places account for about 78% of the combined population of all pages, which shows how concentrated the state's population is across communities. Ada County contributes 6 of the top 34.

Which counties do the top 34 belong to?

The 34 places on this list are spread across 21 counties of Idaho. Ada County has 6 (Boise, Meridian, Eagle, Kuna, Garden City, Star); Kootenai County has 4 (Coeur d'Alene, Post Falls, Hayden, Rathdrum); Canyon County has 3 (Nampa, Caldwell, Middleton). Counties with several entries are usually centers of a metropolitan area, where one large city is surrounded by many suburbs that each pass the 5,000-resident threshold.

How does Idaho compare with the rest of the country?

The median Idaho place with a page has about 15,965 residents, compared with about 13,459 nationwide, so the state's typical community is larger than the national typical place. Boise, ID ranks 115th among all US places by estimated population in our data. The state has 226 communities in total, of which 34 reach 5,000 residents. See the national ranking of the largest cities for comparison.

Quick answers about Idaho cities

How is this ranking made?

The data comes from the SimpleMaps US Cities Database, which gives each place an estimated population and a density in people per square kilometer. We convert density to people per square mile and rank the places with at least 5,000 residents. Boundaries matter: a city that includes large parks or farmland scores lower on density than a compact city of the same size, and population estimates can include areas that share a city's ZIP codes. Read why population figures differ and how density is calculated before you quote a number.

Where to go next

Densest cities in IdahoAll of IdahoAll ranked listsCompare cities

Rankings use dataset estimates, not official counts.

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