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Sanders County, MT Demographics

Sanders County, MT is the 15th most populous of 56 counties in Montana, with 12,400 residents across 2,760 square miles. That is about 4 people per square mile.

At the 2020 census

Population 12,400
Land area 2,760 sq mi
Density 4 / sq mi

Data: 2020 Census · American Community Survey 2024

How Sanders 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: Sanders County, MT

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

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

Census tracts in Sanders County, MT

Name Population Sq mi Per sq mi
Census Tract 2.02 4,486 662.6 7
Census Tract 1 3,951 895.4 4
Census Tract 2.01 1,988 485.3 4
Census Tract 9403 1,975 717.1 3

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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 →