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Adair County, OK Demographics

Adair County, OK is the 41st most populous of 77 counties in Oklahoma, with 19,495 residents across 574 square miles. That is about 34 people per square mile.

At the 2020 census

Population 19,495
Land area 574 sq mi
Density 34 / sq mi

Data: 2020 Census · American Community Survey 2024

How Adair 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: Adair County, OK

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

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

Census tracts in Adair County, OK

Name Population Sq mi Per sq mi
Census Tract 3767 4,654 139.6 33
Census Tract 3770 4,357 155.3 28
Census Tract 3769 4,305 15.4 280
Census Tract 3768 3,848 184.2 21
Census Tract 3766 2,331 79.5 29

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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 →