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Weld County, CO Demographics

Weld County, CO is the 9th most populous of 64 counties in Colorado, with 328,968 residents across 3,985 square miles. That is about 83 people per square mile.

At the 2020 census

Population 328,968
Land area 3,985 sq mi
Density 83 / sq mi

Data: 2020 Census · American Community Survey 2024

How Weld 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: Weld County, CO

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

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

Census tracts in Weld County, CO

Name Population Sq mi Per sq mi
Census Tract 21.01 12,329 43.2 286
Census Tract 22.08 10,618 39.2 271
Census Tract 19.13 8,927 12.3 723
Census Tract 15 8,197 65.5 125
Census Tract 10.05 7,975 3.1 2,570
Census Tract 14.06 7,472 2.8 2,630
Census Tract 13 7,376 1.8 4,044
Census Tract 7.03 7,245 2.1 3,442
Census Tract 20.19 7,063 5.0 1,415
Census Tract 20.07 6,712 4.3 1,552
Census Tract 21.08 6,698 14.4 467
Census Tract 21.07 6,570 13.6 482
Census Tract 25.02 6,391 526.4 12
Census Tract 20.08 6,148 1.5 4,126
Census Tract 20.20 6,136 2.0 3,143
Census Tract 20.09 5,954 16.5 361
Census Tract 25.01 5,889 2,459.2 2
Census Tract 23 5,867 112.2 52
Census Tract 21.05 5,543 15.7 354
Census Tract 14.05 5,229 1.5 3,520
Census Tract 17 5,049 65.7 77
Census Tract 11 5,033 1.0 5,204
Census Tract 18 4,955 124.8 40
Census Tract 20.04 4,953 3.9 1,259
Census Tract 10.06 4,934 1.1 4,582
Census Tract 21.06 4,844 33.0 147
Census Tract 22.05 4,812 1.0 4,944
Census Tract 10.03 4,778 0.5 9,924
Census Tract 19.05 4,712 2.7 1,730
Census Tract 10.04 4,646 1.7 2,761
Census Tract 12.01 4,584 0.6 7,894
Census Tract 16 4,486 93.0 48
Census Tract 14.07 4,320 1.6 2,770
Census Tract 22.07 4,084 5.6 728
Census Tract 20.16 3,864 5.9 658
Census Tract 14.09 3,757 1.1 3,387
Census Tract 22.06 3,680 1.5 2,510
Census Tract 22.09 3,676 15.4 239
Census Tract 4.02 3,605 0.6 5,706
Census Tract 14.15 3,589 0.9 4,199
Census Tract 5.02 3,577 0.5 6,837
Census Tract 4.01 3,562 0.7 5,128
Census Tract 20.13 3,437 3.0 1,142
Census Tract 14.12 3,430 2.0 1,693
Census Tract 14.10 3,352 1.2 2,823
Census Tract 22.03 3,340 7.6 437
Census Tract 5.01 3,330 0.4 8,756
Census Tract 14.16 3,282 5.9 554
Census Tract 8 3,267 0.7 4,639
Census Tract 2 3,193 0.3 9,298
Census Tract 14.17 3,163 0.7 4,621
Census Tract 9 3,057 0.6 5,299
Census Tract 12.02 3,052 0.6 5,359
Census Tract 14.04 2,965 6.9 433
Census Tract 14.13 2,859 0.5 5,217
Census Tract 14.11 2,690 1.0 2,706
Census Tract 1 2,653 0.6 4,607
Census Tract 22.10 2,593 7.7 339
Census Tract 20.14 2,424 0.9 2,669
Census Tract 20.11 2,277 1.5 1,532
Census Tract 14.14 2,272 0.5 4,190
Census Tract 20.10 2,170 15.6 139
Census Tract 22.04 2,069 0.6 3,524
Census Tract 19.10 2,059 16.4 125
Census Tract 14.08 1,991 1.3 1,588
Census Tract 19.12 1,976 6.7 293
Census Tract 20.18 1,954 1.0 1,919
Census Tract 19.14 1,812 46.9 39
Census Tract 6 1,784 1.8 976
Census Tract 21.04 1,689 31.4 54
Census Tract 7.01 1,663 1.3 1,315
Census Tract 19.06 1,578 17.1 92
Census Tract 3 1,547 0.2 6,383
Census Tract 7.05 1,481 33.0 45
Census Tract 20.05 1,478 7.1 208
Census Tract 20.15 1,375 2.5 552
Census Tract 20.12 1,306 3.1 417
Census Tract 7.04 1,069 0.7 1,603
Census Tract 19.11 1,055 12.7 83
Census Tract 20.21 796 7.0 114
Census Tract 20.17 753 2.5 307
Census Tract 19.09 495 13.1 38
Census Tract 20.06 406 15.4 26

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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 →