All counties →

Loudoun County, VA Demographics

Loudoun County, VA is the 4th most populous of 133 counties in Virginia, with 420,936 residents across 516 square miles. That is about 816 people per square mile.

At the 2020 census

Population 420,936
Land area 516 sq mi
Density 816 / sq mi

Data: 2020 Census · American Community Survey 2024

How Loudoun 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: Loudoun County, VA

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

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

Census tracts in Loudoun County, VA

Name Population Sq mi Per sq mi
Census Tract 6110.26 14,425 3.5 4,116
Census Tract 6118.13 13,108 14.6 897
Census Tract 6110.04 8,935 3.8 2,380
Census Tract 6103 8,911 54.2 164
Census Tract 6118.04 8,852 3.6 2,433
Census Tract 6118.10 8,135 6.5 1,253
Census Tract 6118.11 8,098 1.2 6,627
Census Tract 6105.03 8,097 4.1 1,987
Census Tract 6118.07 7,561 1.5 5,043
Census Tract 6119.01 7,388 4.2 1,762
Census Tract 6110.22 7,320 1.5 4,792
Census Tract 6106.01 7,193 3.4 2,099
Census Tract 6110.29 7,139 18.9 378
Census Tract 6105.04 7,094 1.3 5,528
Census Tract 6106.04 6,964 4.5 1,552
Census Tract 6118.09 6,941 1.3 5,445
Census Tract 6110.20 6,892 5.1 1,360
Census Tract 6118.03 6,838 1.1 6,477
Census Tract 6105.05 6,702 0.8 8,727
Census Tract 6108 6,657 94.2 71
Census Tract 6112.09 6,639 1.5 4,419
Census Tract 6115.02 6,550 2.5 2,593
Census Tract 6110.28 6,439 9.3 695
Census Tract 6113 6,349 0.8 8,240
Census Tract 6105.07 6,297 1.8 3,547
Census Tract 6119.02 6,290 1.1 5,823
Census Tract 6102.01 6,225 40.7 153
Census Tract 6111.02 6,225 1.9 3,338
Census Tract 6107.02 6,207 4.6 1,360
Census Tract 6110.30 6,176 1.2 5,037
Census Tract 6110.19 6,045 1.8 3,340
Census Tract 6112.05 6,018 1.1 5,634
Census Tract 6110.23 5,954 1.6 3,748
Census Tract 6110.06 5,950 2.7 2,225
Census Tract 6112.04 5,768 0.8 6,832
Census Tract 6114 5,767 0.8 7,298
Census Tract 6105.06 5,646 2.9 1,953
Census Tract 6107.01 5,640 6.2 906
Census Tract 6102.02 5,617 15.4 364
Census Tract 6110.05 5,573 1.1 5,095
Census Tract 6118.08 5,569 1.2 4,643
Census Tract 6110.09 5,542 1.7 3,215
Census Tract 6107.03 5,364 30.7 175
Census Tract 6118.05 5,069 0.8 6,595
Census Tract 6101.01 5,055 39.1 129
Census Tract 6117.01 4,797 0.8 6,311
Census Tract 6110.02 4,736 2.2 2,179
Census Tract 6112.02 4,735 1.3 3,727
Census Tract 6111.01 4,716 1.8 2,665
Census Tract 6104 4,695 4.9 954
Census Tract 6110.12 4,509 2.2 2,050
Census Tract 6110.14 4,472 1.1 4,238
Census Tract 6112.08 4,384 1.5 2,894
Census Tract 6110.13 4,370 0.9 4,885
Census Tract 6112.07 4,325 1.0 4,308
Census Tract 6116.01 4,317 1.1 3,761
Census Tract 6116.02 4,316 0.5 8,091
Census Tract 6112.06 4,311 1.3 3,227
Census Tract 6115.01 4,242 1.6 2,714
Census Tract 6110.16 4,140 0.7 5,910
Census Tract 6110.18 4,004 2.4 1,672
Census Tract 6101.02 3,866 21.7 178
Census Tract 6110.11 3,833 0.6 5,963
Census Tract 6110.15 3,771 1.5 2,588
Census Tract 6106.03 3,587 0.6 5,608
Census Tract 6110.17 3,397 0.6 6,038
Census Tract 6118.12 3,241 3.3 984
Census Tract 6110.32 2,991 0.5 6,256
Census Tract 6106.02 2,807 4.7 600
Census Tract 6117.02 2,461 2.0 1,247
Census Tract 6109 2,404 36.5 66
Census Tract 6110.27 2,163 1.0 2,229
Census Tract 6110.31 2,141 0.9 2,438
Census Tract 6110.10 1,951 0.5 4,120
Census Tract 9801 46 13.8 3

Related places

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 →