Idaho: Time Zones, Counties, Cities & Map

Metro and micro areas in Idaho, largest first

7 metro areas and 10 micro areas have counties in Idaho. 5 cross into another state; their populations are for the whole area. Populations are July 2025 estimates.

1. Boise City, ID Metro Area864,243 people
2. Coeur d'Alene, ID Metro Area191,864 people
3. Idaho Falls, ID Metro Area173,851 people
4. Logan, UT-ID Metro Area160,889 people
5. Twin Falls, ID Metro Area123,901 people
6. Pocatello, ID Metro Area91,591 people
7. Brigham City, UT-ID Micro Area70,405 people
8. Rexburg, ID Micro Area69,380 people
9. Lewiston, ID-WA Metro Area65,450 people
10. Ontario, OR-ID Micro Area60,085 people
11. Sandpoint, ID Micro Area54,420 people
12. Blackfoot, ID Micro Area51,153 people

Every metro and micro area in the US

Tribal areas in Idaho, largest first

1. Nez Perce Reservation19,038 people
2. Coeur d'Alene Reservation8,051 people
3. Fort Hall Reservation and Off-Reservation Trust Land5,010 people
4. Duck Valley Reservation and Off-Reservation Trust Land838 people
5. Kootenai Reservation and Off-Reservation Trust Land150 people

American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.

Counties and equivalents, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

1. Ada County, Idaho546,141 people
2. Canyon County, Idaho275,123 people
3. Kootenai County, Idaho191,864 people
4. Bonneville County, Idaho135,771 people
5. Twin Falls County, Idaho97,539 people
6. Bannock County, Idaho91,591 people
7. Madison County, Idaho55,172 people
8. Bonner County, Idaho54,420 people
9. Bingham County, Idaho51,153 people
10. Nez Perce County, Idaho42,905 people
11. Latah County, Idaho41,842 people
12. Jefferson County, Idaho35,297 people

See all 44 counties and equivalents in Idaho, largest first

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

1. Boise City, Idaho (city)237,242 people
2. Meridian, Idaho (city)130,138 people
3. Nampa, Idaho (city)110,319 people
4. Idaho Falls, Idaho (city)67,725 people
5. Caldwell, Idaho (city)66,516 people
6. Pocatello, Idaho (city)57,635 people
7. Coeur d'Alene, Idaho (city)56,447 people
8. Twin Falls, Idaho (city)54,164 people
9. Post Falls, Idaho (city)43,391 people
10. Rexburg, Idaho (city)40,543 people
11. Lewiston, Idaho (city)34,651 people
12. Eagle, Idaho (city)32,855 people

See all 236 cities, towns and communities in Idaho, largest first

ZIP Code areas, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

1. ZIP 8364676,023 people
2. ZIP 8330163,592 people
3. ZIP 8364262,279 people
4. ZIP 8368660,993 people
5. ZIP 8370958,928 people
6. ZIP 8385454,851 people
7. ZIP 8344051,421 people
8. ZIP 8340147,972 people
9. ZIP 8368743,135 people
10. ZIP 8370442,719 people
11. ZIP 8381541,405 people
12. ZIP 8360541,325 people

See all 287 ZIP Code areas in Idaho, largest first

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