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Montana: county data, all 56 of them.

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

Counties
56
Population
1,116,875
Land area
145,543 sq mi
Establishments
42,150
Combined county GDP
$78.44 bn
SBA approvals recorded
1,939

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 Montana 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 Montana, and no such pack exists yet.

Why there is no state guide here

You cannot write Montana 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 56 Montana county-equivalents.

Montana counties: population, income, establishments and SBA activity
GeographyPopulationMedian incomeEstablishmentsCounty GDPSBA approvalsLand area, sq mi
Beaverhead County9,713$61,268399$672.5 m105,542
Big Horn County12,891$58,750181$1.29 bn54,995
Blaine County6,949$64,813135$227.4 m84,228
Broadwater County7,668$70,374207$306.5 m51,193
Carbon County11,116$80,261474$523.7 m372,049
Carter County1,308$54,16728$92.1 mNone recorded3,341
Cascade County84,606$67,6902,472$5.71 bn1312,698
Chouteau County5,906$58,218153$292.5 m63,972
Custer County11,961$70,605454$695.6 m163,783
Daniels County1,494$55,62576$122.6 m31,426
Dawson County8,827$71,334295$515.1 m102,372
Deer Lodge County9,597$57,527312$431.3 m6737
Fallon County2,760$76,250127$223.5 m31,621
Fergus County11,687$63,706444$776.7 m154,340
Flathead County110,695$73,9255,092$7.21 bn2605,088
Gallatin County124,074$93,5286,828$11.88 bn3652,603
Garfield County1,094$69,58329$43.0 mNone recorded4,675
Glacier County13,637$46,875230$649.7 m22,996
Golden Valley County899$58,33310$32.9 mNone recorded1,175
Granite County3,462$59,265119$165.8 m51,727
Hill County16,155$52,798493$925.3 m52,899
Jefferson County12,774$95,490342$392.8 m191,656
Judith Basin County2,071$59,00060$138.6 m11,870
Lake County32,561$63,360991$1.35 bn621,490
Lewis and Clark County73,464$78,2372,603$5.69 bn1183,459
Liberty County1,952$57,85769$323.8 m21,430
Lincoln County21,175$47,143671$880.5 m123,613
Madison County9,223$75,250427$651.0 m63,587
McCone County1,670$69,37557$150.8 m12,643
Meagher County2,007$71,93293$89.7 m42,392
Mineral County4,959$63,450144$163.6 m41,219
Missoula County120,672$75,5984,816$9.09 bn1772,593
Musselshell County5,152$58,920118$513.9 m11,868
Park County17,710$70,047943$898.9 m272,803
Petroleum County447$60,20811$22.7 mNone recorded1,655
Phillips County4,221$53,417135$163.8 m75,140
Pondera County6,035$52,338182$302.1 m51,623
Powder River County1,815$67,04568$153.1 m23,297
Powell County7,053$66,923176$356.5 m12,326
Prairie County1,250$51,25035$62.1 mNone recorded1,737
Ravalli County46,727$71,2831,715$1.93 bn562,391
Richland County11,235$73,084498$1.19 bn202,084
Roosevelt County10,526$57,063206$549.3 m52,355
Rosebud County8,165$49,914178$1.08 bn75,010
Sanders County13,285$57,476394$552.2 m142,761
Sheridan County3,669$70,147152$240.8 m21,677
Silver Bow County35,785$61,7541,208$2.22 bn23718
Stillwater County9,182$84,732263$725.1 m141,795
Sweet Grass County3,720$77,000187$314.8 m61,855
Teton County6,353$70,430232$299.9 m42,272
Toole County5,061$57,731174$488.9 m21,916
Treasure County732$67,91717$107.7 mNone recorded977
Valley County7,519$71,695276$394.0 m154,926
Wheatland County2,056$49,48960$107.4 m11,423
Wibaux County1,193$67,46231$59.2 m2889
Yellowstone County168,957$76,5706,060$14.02 bn4272,633

The register

Every source behind these 56 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

How a county page is built →