Business planning by county

Idaho county reference

44 counties and county equivalents in Idaho. Search names or FIPS codes, compare Census geography and keep the original sources with your work.

• Ada County

  Idaho · FIPS 16001

  546,141 residents · 2025 estimate

• Adams County

  Idaho · FIPS 16003

  5,013 residents · 2025 estimate

• Bannock County

  Idaho · FIPS 16005

  91,591 residents · 2025 estimate

• Bear Lake County

  Idaho · FIPS 16007

  6,727 residents · 2025 estimate

• Benewah County

  Idaho · FIPS 16009

  10,508 residents · 2025 estimate

• Bingham County

  Idaho · FIPS 16011

  51,153 residents · 2025 estimate

• Blaine County

  Idaho · FIPS 16013

  25,517 residents · 2025 estimate

• Boise County

  Idaho · FIPS 16015

  8,545 residents · 2025 estimate

• Bonner County

  Idaho · FIPS 16017

  54,420 residents · 2025 estimate

• Bonneville County

  Idaho · FIPS 16019

  135,771 residents · 2025 estimate

• Boundary County

  Idaho · FIPS 16021

  13,997 residents · 2025 estimate

• Butte County

  Idaho · FIPS 16023

  2,783 residents · 2025 estimate

• Camas County

  Idaho · FIPS 16025

  1,316 residents · 2025 estimate

• Canyon County

  Idaho · FIPS 16027

  275,123 residents · 2025 estimate

• Caribou County

  Idaho · FIPS 16029

  7,252 residents · 2025 estimate

• Cassia County

  Idaho · FIPS 16031

  26,397 residents · 2025 estimate

• Clark County

  Idaho · FIPS 16033

  783 residents · 2025 estimate

• Clearwater County

  Idaho · FIPS 16035

  9,118 residents · 2025 estimate

• Custer County

  Idaho · FIPS 16037

  4,636 residents · 2025 estimate

• Elmore County

  Idaho · FIPS 16039

  29,465 residents · 2025 estimate

• Franklin County

  Idaho · FIPS 16041

  15,889 residents · 2025 estimate

• Fremont County

  Idaho · FIPS 16043

  14,208 residents · 2025 estimate

• Gem County

  Idaho · FIPS 16045

  21,773 residents · 2025 estimate

• Gooding County

  Idaho · FIPS 16047

  16,446 residents · 2025 estimate

• Idaho County

  Idaho · FIPS 16049

  17,874 residents · 2025 estimate

• Jefferson County

  Idaho · FIPS 16051

  35,297 residents · 2025 estimate

• Jerome County

  Idaho · FIPS 16053

  26,362 residents · 2025 estimate

• Kootenai County

  Idaho · FIPS 16055

  191,864 residents · 2025 estimate

• Latah County

  Idaho · FIPS 16057

  41,842 residents · 2025 estimate

• Lemhi County

  Idaho · FIPS 16059

  8,474 residents · 2025 estimate

• Lewis County

  Idaho · FIPS 16061

  3,704 residents · 2025 estimate

• Lincoln County

  Idaho · FIPS 16063

  5,603 residents · 2025 estimate

• Madison County

  Idaho · FIPS 16065

  55,172 residents · 2025 estimate

• Minidoka County

  Idaho · FIPS 16067

  22,911 residents · 2025 estimate

• Nez Perce County

  Idaho · FIPS 16069

  42,905 residents · 2025 estimate

• Oneida County

  Idaho · FIPS 16071

  5,085 residents · 2025 estimate

• Owyhee County

  Idaho · FIPS 16073

  12,661 residents · 2025 estimate

• Payette County

  Idaho · FIPS 16075

  27,824 residents · 2025 estimate

• Power County

  Idaho · FIPS 16077

  8,246 residents · 2025 estimate

• Shoshone County

  Idaho · FIPS 16079

  14,130 residents · 2025 estimate

• Teton County

  Idaho · FIPS 16081

  13,254 residents · 2025 estimate

• Twin Falls County

  Idaho · FIPS 16083

  97,539 residents · 2025 estimate

• Valley County

  Idaho · FIPS 16085

  12,831 residents · 2025 estimate

• Washington County

  Idaho · FIPS 16087

  11,583 residents · 2025 estimate

Use the county data

Use a county reference when organizing a market-research brief, outreach territory or business calculation. County population gives geographic context; it does not measure the number of qualified customers.

These are geographic reference records, not contact lists or verified sales leads.

Geography: 2025 U.S. Census Gazetteer. Population: Vintage 2025 estimates, July 1, 2025. County equivalents include parishes, boroughs, independent cities and planning regions. Puerto Rico population is not supplied by this population file.