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Where am ILOCATED

Ontario, OR-ID Micro Area

The Ontario, OR-ID micro area is made up of 2 counties in Oregon and Idaho: Malheur and Payette. About 60,085 people lived there on July 1, 2025 (Census estimate), 5.5% more than in April 2020.

Payette County, centralMalheur County, centralOntario
2 counties in Oregon and Idaho
Population, July 2025
60,085 5.5% more than in April 2020
Type
Micropolitan statistical area
Counties
2, both central
Land area
10,295 sq mi (26,663 km²)
Time zone
Mountain TimeUTC-07:00 in January; UTC-06:00 in July
States
Oregon, Idaho
Combined statistical area
Boise City-Mountain Home-Ontario, ID-OR
CBSA code
36620
Open this area in the metro area finder

Counties in the Ontario, OR-ID micro area, largest first

CountyRolePopulation, July 2025Share of the area
Malheur CountyOregonCentral32,26153.7%
Payette CountyIdahoCentral27,82446.3%

A central county holds the area’s core, an urban area of 10,000 to 49,999 people. This area has no outlying counties: no neighboring county sends enough commuters to join it. A county belongs to one metro or micro area at most, and it counts whole, countryside included.

Principal city

  1. Ontario11,842 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. Boise City, ID Metro Area864,243 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. Boise City, ID Metro Area47 mi southeast
  2. Baker City, OR Micro Area67 mi northwest
  3. Winnemucca, NV Micro Area215 mi south

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 ↗