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Frederick County, MD Demographics

Frederick County, MD is the 7th most populous of 24 counties in Maryland, with 271,717 residents across 661 square miles. That is about 411 people per square mile.

At the 2020 census

Population 271,717
Land area 661 sq mi
Density 411 / sq mi

Data: 2020 Census · American Community Survey 2024

How Frederick 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: Frederick County, MD

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

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

Census tracts in Frederick County, MD

Name Population Sq mi Per sq mi
Census Tract 7505.05 7,660 0.8 10,060
Census Tract 7523.01 7,217 1.8 3,921
Census Tract 7521.02 6,881 16.5 416
Census Tract 7512.02 6,654 1.6 4,114
Census Tract 7519.03 6,485 12.3 529
Census Tract 7508.02 6,055 1.5 3,997
Census Tract 7505.04 6,012 1.0 6,233
Census Tract 7519.02 6,005 2.9 2,053
Census Tract 7510.03 5,920 5.5 1,083
Census Tract 7522.06 5,889 6.5 900
Census Tract 7668 5,872 16.1 364
Census Tract 7510.04 5,749 5.4 1,066
Census Tract 7753.02 5,722 15.9 359
Census Tract 7512.01 5,702 3.1 1,814
Census Tract 7507.01 5,623 1.3 4,243
Census Tract 7518.01 5,417 10.5 517
Census Tract 7510.02 5,297 0.9 5,696
Census Tract 7756 5,172 5.2 990
Census Tract 7525.01 5,170 30.6 169
Census Tract 7505.08 5,056 0.5 11,034
Census Tract 7402 5,027 6.5 778
Census Tract 7508.05 4,914 1.3 3,849
Census Tract 7520.01 4,815 5.2 931
Census Tract 7513.01 4,752 17.8 267
Census Tract 7519.04 4,606 8.7 531
Census Tract 7530.01 4,527 6.0 753
Census Tract 7522.02 4,481 0.6 7,607
Census Tract 7526.01 4,481 4.4 1,014
Census Tract 7505.06 4,321 1.8 2,391
Census Tract 7651 4,288 1.3 3,320
Census Tract 7523.02 4,274 26.0 164
Census Tract 7505.07 4,271 0.5 8,829
Census Tract 7735 4,236 3.6 1,178
Census Tract 7526.03 4,057 3.5 1,169
Census Tract 7754 3,929 1.9 2,046
Census Tract 7518.02 3,823 25.2 152
Census Tract 7507.02 3,822 0.6 6,825
Census Tract 7517.02 3,782 31.4 120
Census Tract 7519.05 3,755 2.2 1,690
Census Tract 7521.01 3,661 4.2 882
Census Tract 7528.02 3,654 22.1 165
Census Tract 7707 3,638 25.3 144
Census Tract 7523.03 3,606 16.4 219
Census Tract 7522.05 3,571 3.9 920
Census Tract 7676 3,170 27.5 115
Census Tract 7513.02 3,166 33.7 94
Census Tract 7529 3,094 48.0 64
Census Tract 7516 3,023 34.7 87
Census Tract 7508.01 2,883 0.8 3,491
Census Tract 7675 2,792 46.3 60
Census Tract 7506 2,756 0.8 3,358
Census Tract 7530.02 2,746 4.0 689
Census Tract 7526.02 2,729 9.2 298
Census Tract 7519.06 2,521 1.4 1,776
Census Tract 7517.01 2,463 14.9 166
Census Tract 7508.04 2,441 0.7 3,351
Census Tract 7512.03 2,424 5.9 408
Census Tract 7522.01 2,399 29.2 82
Census Tract 7525.02 2,362 17.4 136
Census Tract 7528.01 2,192 21.3 103
Census Tract 7510.01 2,076 0.4 5,426
Census Tract 7503 1,728 0.2 11,468
Census Tract 7502 1,686 0.2 7,004
Census Tract 7501 1,651 0.1 12,085
Census Tract 7722 1,566 3.5 450

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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 →