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Valley County, MT Demographics

Valley County, MT is the 28th most populous of 56 counties in Montana, with 7,578 residents across 4,926 square miles. That is about 2 people per square mile.

At the 2020 census

Population 7,578
Land area 4,926 sq mi
Density 2 / sq mi

Data: 2020 Census · American Community Survey 2024

How Valley County compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: Valley County, MT

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around Valley County, MT — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in Valley County, MT

Name Population Sq mi Per sq mi
Census Tract 9406 3,189 1,654.1 2
Census Tract 1005 2,790 6.7 415
Census Tract 1001 1,599 3,265.3 0

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About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

Read how BlockAtlas computes population within an area →