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Where am ILOCATED

Boise City, ID Metro Area

The Boise City, ID metro area is made up of 5 counties in Idaho: Ada, Canyon, Gem, Owyhee, and Boise, largest first. About 864,243 people lived there on July 1, 2025 (Census estimate), 13.0% more than in April 2020.

Ada County, centralBoise County, outlyingCanyon County, outlyingGem County, outlyingOwyhee County, outlyingBoise City
Central Outlying 5 counties in Idaho
Population, July 2025
864,243 13.0% more than in April 2020
Type
Metropolitan statistical area
Counties
5: 1 central, 4 outlying
Land area
11,767 sq mi (30,475 km²)
Time zone
Mountain TimeUTC-07:00 in January; UTC-06:00 in July
State
Idaho
Combined statistical area
Boise City-Mountain Home-Ontario, ID-OR
CBSA code
14260
Open this area in the metro area finder

Counties in the Boise City, ID metro area, largest first

CountyRolePopulation, July 2025Share of the area
Ada CountyCentral546,14163.2%
Canyon CountyOutlying275,12331.8%
Gem CountyOutlying21,7732.5%
Owyhee CountyOutlying12,6611.5%
Boise CountyOutlying8,5451.0%

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

  1. Boise City237,242 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 Boise City-Mountain Home-Ontario, ID-OR 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:

  1. Ontario, OR-ID Micro Area60,085 people
  2. Mountain Home, ID Micro Area29,465 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.

  1. Mountain Home, ID Micro Area42 mi southeast
  2. Ontario, OR-ID Micro Area47 mi northwest
  3. Twin Falls, ID Metro Area114 mi southeast
  4. Elko, NV Micro Area192 mi south
  5. Winnemucca, NV Micro Area197 mi southwest

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.

See this area on Census.gov ↗