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Knox County, ME Demographics

Knox County, ME is the 10th most populous of 16 counties in Maine, with 40,573 residents across 365 square miles. That is about 111 people per square mile.

At the 2020 census

Population 40,573
Land area 365 sq mi
Density 111 / sq mi

Data: 2020 Census · American Community Survey 2024

How Knox 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: Knox County, ME

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

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

Census tracts in Knox County, ME

Name Population Sq mi Per sq mi
Census Tract 9702 5,232 18.2 287
Census Tract 9704.01 4,865 46.5 105
Census Tract 9707 4,410 10.9 404
Census Tract 9703.02 3,975 70.2 57
Census Tract 9705 3,644 21.6 168
Census Tract 9703.01 3,109 54.7 57
Census Tract 9708 3,002 20.3 148
Census Tract 9704.02 2,739 10.9 251
Census Tract 9710 2,644 33.3 79
Census Tract 9709 2,587 25.0 103
Census Tract 9706 2,526 1.9 1,315
Census Tract 9711 1,852 51.5 36

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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 →