All counties →

Sonoma County, CA Demographics

Sonoma County, CA is the 17th most populous of 58 counties in California, with 488,853 residents across 1,575 square miles. That is about 310 people per square mile.

At the 2020 census

Population 488,853
Land area 1,575 sq mi
Density 310 / sq mi

Data: 2020 Census · American Community Survey 2024

How Sonoma 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: Sonoma County, CA

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

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

Census tracts in Sonoma County, CA

Name Population Sq mi Per sq mi
Census Tract 1530.01 7,397 1.0 7,646
Census Tract 1530.06 7,343 1.3 5,582
Census Tract 1506.03 7,277 1.3 5,440
Census Tract 1513.10 6,959 0.9 7,372
Census Tract 1513.11 6,792 1.6 4,194
Census Tract 1514.05 6,755 2.7 2,474
Census Tract 1533.01 6,622 10.6 627
Census Tract 1530.05 6,614 9.6 691
Census Tract 1530.02 6,578 0.9 7,587
Census Tract 1526.01 6,554 18.8 348
Census Tract 1513.09 6,361 13.8 460
Census Tract 1542.02 6,306 67.7 93
Census Tract 1529.06 6,084 10.1 600
Census Tract 1503.04 5,834 1.2 4,896
Census Tract 1530.03 5,834 0.7 8,750
Census Tract 1533.02 5,611 2.1 2,712
Census Tract 1531.02 5,566 0.5 11,619
Census Tract 1513.05 5,533 0.7 8,118
Census Tract 1515.06 5,469 0.9 5,787
Census Tract 1529.04 5,366 0.9 6,032
Census Tract 1503.05 5,353 1.3 4,220
Census Tract 1512.03 5,269 0.9 5,592
Census Tract 1513.07 5,218 1.7 3,000
Census Tract 1507.02 5,187 7.9 658
Census Tract 1529.03 5,185 0.6 8,043
Census Tract 1506.07 5,157 4.3 1,204
Census Tract 1538.11 5,154 2.7 1,930
Census Tract 1512.06 5,137 5.5 934
Census Tract 1527.01 5,122 9.2 556
Census Tract 1509.01 5,104 1.1 4,444
Census Tract 1522.04 5,103 0.7 7,127
Census Tract 1518 5,056 1.0 5,191
Census Tract 1527.02 5,007 8.0 626
Census Tract 1506.09 4,988 0.9 5,615
Census Tract 1508 4,941 5.3 926
Census Tract 1514.03 4,932 4.3 1,151
Census Tract 1513.08 4,870 1.1 4,245
Census Tract 1531.03 4,860 0.6 7,932
Census Tract 1511 4,855 46.5 104
Census Tract 1507.01 4,744 1.3 3,626
Census Tract 1532.01 4,705 1.1 4,155
Census Tract 1502.03 4,529 1.7 2,600
Census Tract 1528.01 4,526 2.0 2,243
Census Tract 1538.09 4,510 1.6 2,857
Census Tract 1535.01 4,505 17.7 255
Census Tract 1513.01 4,467 0.5 9,884
Census Tract 1506.12 4,449 67.0 66
Census Tract 1539.02 4,436 1.4 3,281
Census Tract 1506.01 4,411 0.5 9,172
Census Tract 1525.01 4,396 0.8 5,728
Census Tract 1506.02 4,347 0.6 6,741
Census Tract 1538.08 4,313 1.2 3,704
Census Tract 1506.11 4,180 1.1 3,664
Census Tract 1528.03 4,164 0.5 8,124
Census Tract 1523 4,153 1.3 3,107
Census Tract 1538.10 4,135 11.6 355
Census Tract 1534.04 4,094 3.3 1,223
Census Tract 1531.04 4,093 0.7 6,194
Census Tract 1542.01 4,088 10.3 397
Census Tract 1529.05 4,058 0.5 8,473
Census Tract 1503.03 4,013 23.7 169
Census Tract 1534.03 4,010 3.3 1,216
Census Tract 1524.01 4,009 3.8 1,049
Census Tract 1502.05 3,977 6.0 663
Census Tract 1538.07 3,957 22.8 173
Census Tract 1506.10 3,956 0.5 7,593
Census Tract 1532.02 3,910 3.8 1,040
Census Tract 1517.02 3,876 1.3 2,909
Census Tract 1522.01 3,839 0.5 8,255
Census Tract 1513.06 3,795 0.4 8,814
Census Tract 1503.06 3,746 4.9 759
Census Tract 1535.02 3,720 26.8 139
Census Tract 1515.04 3,705 0.6 6,197
Census Tract 1514.06 3,669 0.7 5,471
Census Tract 1512.04 3,651 1.3 2,843
Census Tract 1522.03 3,628 0.5 7,117
Census Tract 1539.03 3,588 1.3 2,824
Census Tract 1502.04 3,559 1.0 3,419
Census Tract 1534.05 3,513 3.2 1,109
Census Tract 1525.02 3,498 0.7 4,917
Census Tract 1515.03 3,446 5.7 604
Census Tract 1524.02 3,418 4.3 796
Census Tract 1509.02 3,406 0.9 3,622
Census Tract 1541 3,399 223.8 15
Census Tract 1539.05 3,391 19.2 177
Census Tract 1537.05 3,382 17.8 190
Census Tract 1510 3,359 6.0 555
Census Tract 1517.01 3,327 0.6 6,009
Census Tract 1514.04 3,290 0.5 7,109
Census Tract 1538.04 3,231 0.5 6,722
Census Tract 1516.02 3,212 12.7 252
Census Tract 1536.02 3,150 12.0 263
Census Tract 1516.01 2,983 21.1 141
Census Tract 1519 2,921 0.4 7,713
Census Tract 1528.04 2,807 0.3 10,364
Census Tract 1521 2,804 0.8 3,334
Census Tract 1512.05 2,786 5.5 511
Census Tract 1538.06 2,686 0.6 4,424
Census Tract 1534.06 2,662 1.0 2,627
Census Tract 1505.01 2,457 17.0 145

Showing the 100 most populous of 121 — the rest are shown on the map.

Related places

Metro areas containing Sonoma County

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 →