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Idaho: county data, all 44 of them.

Every Idaho county has a data page built from federal sources, each figure carrying its publisher and period. What this page does not carry is the Idaho statutory framework, and the reason is below rather than hidden.

Counties
44
Population
1,934,262
Land area
82,645 sq mi
Establishments
57,557
Combined county GDP
$129.02 bn
SBA approvals recorded
5,215

Read this first

This is a county directory, not a state guide.

The county pages below are complete. They carry demographics, growth and migration, economic output, employment and wages, business establishments by industry, the construction pipeline, the SBA lending record including charge off rates, geography and hazard. Every figure names its publisher and the period it describes.

What is missing is the Idaho legal and regulatory frame: how zoning and land development codes work in this state, what the entitlement path looks like, which agencies permit what, and which statutes override local codes. That material requires a research pack for Idaho, and no such pack exists yet.

Why there is no state guide here

You cannot write Idaho zoning law from a population table. Everything on the county pages is derived from federal datasets that cover all counties equally; statutory analysis is not, and generating it anyway would produce confident text about the law that nothing behind it supports.

Florida and California have research packs and therefore have full state guides. The remaining eight, including this one, do not. That is stated rather than papered over.

Counties

All 44 Idaho county-equivalents.

Idaho counties: population, income, establishments and SBA activity
GeographyPopulationMedian incomeEstablishmentsCounty GDPSBA approvalsLand area, sq mi
Ada County518,935$91,50217,028$45.45 bn1,7731,053
Adams County4,744$61,808119$204.6 m141,363
Bannock County89,454$66,4992,353$4.41 bn2281,112
Bear Lake County6,650$75,260168$295.7 m21975
Benewah County10,142$59,794275$557.6 m28777
Bingham County49,664$77,8781,020$2.22 bn1232,094
Blaine County24,951$92,5661,688$2.52 bn1232,644
Boise County8,273$78,774200$283.1 m231,899
Bonner County51,049$66,9791,833$2.55 bn1871,735
Bonneville County129,523$79,0684,197$9.06 bn4571,866
Boundary County13,172$67,237439$658.7 m301,269
Butte County2,684$53,01556$1.87 bn32,232
Camas County1,124$57,95544$117.8 m21,074
Canyon County250,790$76,4885,933$11.74 bn571587
Caribou County7,162$68,782196$1.14 bn111,764
Cassia County25,483$70,830773$2.64 bn512,565
Clark County849$55,20812$57.1 mNone recorded1,764
Clearwater County9,012$60,000246$474.1 m42,457
Custer County4,470$67,574192$257.3 m134,921
Elmore County29,321$65,359477$1.91 bn283,075
Franklin County15,056$71,950372$635.1 m40664
Fremont County13,943$72,683395$549.8 m411,864
Gem County20,614$64,605510$696.0 m41561
Gooding County15,931$63,559360$1.76 bn21729
Idaho County17,432$66,325521$680.2 m278,477
Jefferson County33,154$86,679739$1.37 bn881,094
Jerome County25,173$71,724634$2.00 bn27597
Kootenai County181,996$81,8616,221$11.54 bn5621,244
Latah County41,049$65,4241,046$2.07 bn551,076
Lemhi County8,249$53,202307$546.1 m224,563
Lewis County3,682$51,615109$223.1 m6479
Lincoln County5,358$71,453106$397.0 m51,201
Madison County54,618$60,1601,113$2.01 bn99469
Minidoka County22,208$70,377491$1.26 bn20758
Nez Perce County42,697$72,5991,213$3.08 bn61848
Oneida County4,768$74,954100$201.0 m51,200
Owyhee County12,503$64,406262$677.4 m177,666
Payette County26,771$67,673619$1.29 bn59407
Power County8,133$61,146177$560.7 m41,404
Shoshone County13,785$55,527360$954.9 m232,630
Teton County12,425$99,805658$653.1 m44449
Twin Falls County93,734$67,4093,026$5.95 bn1901,921
Valley County12,389$76,078747$849.5 m403,665
Washington County11,142$54,000222$664.5 m281,453

The register

Every source behind these 44 pages.

SourcePeriod coveredLicence
US Census Bureau, American Community Survey 5-Year Estimates2020-2024 5-yearUS Census Bureau, public domain
US Census Bureau, Population Estimates Program, Vintage 2024Vintage 2024, estimates 2020 to 2024US Census Bureau, public domain
US Bureau of Economic Analysis, Regional, table CAGDP2CAGDP2, through 2024US Bureau of Economic Analysis, public domain
US EPA, Map of Radon Zones, county spreadsheet2024-05 publication, EPA 402/A-16/001US EPA, public domain
FEMA OpenFEMA, NFIP Community Status BookCommunity Status Book, as retrievedFEMA OpenFEMA, public domain
US Small Business Administration, 7(a) FOIA releaseFY2020 to FY2026 year to date, as of 2026-06-30FOIA release, public domain
US Small Business Administration, 504 FOIA releaseFY2010 to FY2026 year to date, as of 2026-06-30FOIA release, public domain
US Census Bureau county boundary geometry, TIGER, adjacency computed from shared boundary verticesTIGER county boundariesUS Census Bureau, public domain
US Census Bureau, County Business Patterns2023US Census Bureau, public domain
US Bureau of Labor Statistics, Quarterly Census of Employment and Wages2024 annual averagesUS BLS, public domain
US Census Bureau, Building Permits Survey2024 annualUS Census Bureau, public domain
US Internal Revenue Service, Statistics of Income county migration flows2021 to 2022 filing yearsIRS SOI, public domain

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