Idaho Falls, ID Metro Area
The Idaho Falls, ID metro area is made up of 3 counties in Idaho: Bonneville, Jefferson, and Butte, largest first. About 173,851 people lived there on July 1, 2025 (Census estimate), 10.4% more than in April 2020.
- Population, July 2025
- 173,851 10.4% more than in April 2020
- Type
- Metropolitan statistical area
- Counties
- 3: 1 central, 2 outlying
- Land area
- 5,196 sq mi (13,458 km²)
- Time zone
- Mountain TimeUTC-07:00 in January; UTC-06:00 in July
- State
- Idaho
- Combined statistical area
- Idaho Falls-Rexburg-Blackfoot, ID
- CBSA code
- 26820
Counties in the Idaho Falls, ID metro area, largest first
| County | Role | Population, July 2025 | Share of the area |
|---|---|---|---|
| Bonneville County | Central | 135,771 | 78.1% |
| Jefferson County | Outlying | 35,297 | 20.3% |
| Butte County | Outlying | 2,783 | 1.6% |
A central county holds the area’s core, an urban area of at least 50,000 people. An outlying county is in the area because of commuting: at least a quarter of its workers have jobs in the central county, or at least a quarter of the people working there live in them. A county belongs to one metro or micro area at most, and it counts whole, countryside included.
Principal city
- Idaho Falls67,725 people
OMB names the area after its largest principal cities. A principal city is the area’s largest city, plus any other city that is very large or a big job center, and smaller ones with at least as many jobs as working residents (2020 Census and commuting figures). People counts are American Community Survey 2020–2024 5-year estimates.
Part of the Idaho Falls-Rexburg-Blackfoot, ID combined statistical area
OMB joins neighboring metro and micro areas into a combined statistical area when enough people commute between them. The other 2 areas in this one, largest first:
- Rexburg, ID Micro Area69,380 people
- Blackfoot, ID Micro Area51,153 people
Bordering metro and micro areas, nearest first
Areas with a county on this area’s edge. Distances are straight lines between the areas’ largest cities.
- Blackfoot, ID Micro Area26 mi southwest
- Rexburg, ID Micro Area26 mi northeast
- Jackson, WY-ID Micro Area63 mi east
- Hailey, ID Micro Area113 mi west
Before using this answer on a form
A metro or micro area is a statistical area that OMB draws for federal statistics. It is not a city, a local government or a mailing address, and it is not a measure of urban and rural: whole counties count, rural parts included. Programs that use metro areas, such as housing income limits or wage rates, can use their own version of these lists; check the program’s own list for an address.
Find the metro area where you are now, find your county, or see every metro and micro area by population.