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Where am ILOCATED

Twin Falls, ID Metro Area

The Twin Falls, ID metro area is made up of 2 counties in Idaho: Twin Falls and Jerome. About 123,901 people lived there on July 1, 2025 (Census estimate), 8.4% more than in April 2020.

Jerome County, outlyingTwin Falls County, centralTwin Falls
Central Outlying 2 counties in Idaho
Population, July 2025
123,901 8.4% more than in April 2020
Type
Metropolitan statistical area
Counties
2: 1 central, 1 outlying
Land area
2,519 sq mi (6,525 km²)
Time zone
Mountain TimeUTC-07:00 in January; UTC-06:00 in July
State
Idaho
CBSA code
46300
Open this area in the metro area finder

Counties in the Twin Falls, ID metro area, largest first

CountyRolePopulation, July 2025Share of the area
Twin Falls CountyCentral97,53978.7%
Jerome CountyOutlying26,36221.3%

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. Twin Falls54,164 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.

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. Burley, ID Micro Area34 mi east
  2. Hailey, ID Micro Area66 mi north
  3. Mountain Home, ID Micro Area74 mi northwest
  4. Boise City, ID Metro Area114 mi northwest
  5. Elko, NV Micro Area137 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 ↗