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Alameda County, CA Demographics

Alameda County, CA is the 7th most populous of 58 counties in California, with 1,682,299 residents across 737 square miles. That is about 2,281 people per square mile.

At the 2020 census

Population 1,682,299
Land area 737 sq mi
Density 2,281 / sq mi

Data: 2020 Census · American Community Survey 2024

How Alameda 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: Alameda County, CA

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

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

Census tracts in Alameda County, CA

Name Population Sq mi Per sq mi
Census Tract 4507.51 12,411 3.9 3,211
Census Tract 4228 11,245 0.2 71,284
Census Tract 4507.52 9,846 6.7 1,466
Census Tract 4507.43 8,901 1.7 5,388
Census Tract 4372 8,696 1.0 8,816
Census Tract 4501.02 8,660 3.7 2,339
Census Tract 4507.01 8,271 101.8 81
Census Tract 4381 7,807 0.8 10,101
Census Tract 4087 7,774 0.4 17,765
Census Tract 4415.03 7,763 27.9 279
Census Tract 4351.03 7,726 20.0 386
Census Tract 4441 7,703 1.1 6,750
Census Tract 4504 7,675 1.2 6,314
Census Tract 4429 7,661 0.8 9,602
Census Tract 4332 7,652 1.2 6,245
Census Tract 4419.24 7,619 0.8 9,033
Census Tract 4371.01 7,532 19.0 396
Census Tract 4302 7,477 2.1 3,630
Census Tract 4422 7,454 1.6 4,606
Census Tract 4333 7,448 1.0 7,654
Census Tract 4414.01 7,319 0.7 10,211
Census Tract 4412 7,277 1.3 5,803
Census Tract 4512.01 7,271 1.4 5,142
Census Tract 4088 7,257 0.5 15,936
Census Tract 4351.04 7,230 2.8 2,586
Census Tract 4416.02 7,220 0.6 11,117
Census Tract 4443.04 7,202 6.5 1,111
Census Tract 4418 7,163 0.8 9,104
Census Tract 4403.01 7,129 1.7 4,265
Census Tract 4283.02 7,120 0.9 8,264
Census Tract 4369 7,099 0.5 15,232
Census Tract 4283.01 7,044 1.7 4,242
Census Tract 4511.04 7,028 190.0 37
Census Tract 4339 6,833 0.3 21,672
Census Tract 4501.01 6,825 0.7 9,757
Census Tract 4072 6,823 0.3 24,713
Census Tract 4507.50 6,790 0.6 10,450
Census Tract 4366.01 6,761 0.4 16,160
Census Tract 4301.01 6,747 9.9 680
Census Tract 4081 6,712 3.5 1,945
Census Tract 4430.02 6,650 0.6 10,899
Census Tract 4282 6,644 0.5 12,634
Census Tract 4334 6,644 2.1 3,177
Census Tract 4516.02 6,631 1.2 5,699
Census Tract 4514.04 6,613 0.6 10,224
Census Tract 4515.03 6,520 1.0 6,315
Census Tract 4502 6,456 0.6 10,369
Census Tract 4442 6,451 0.8 8,073
Census Tract 4513 6,435 4.6 1,397
Census Tract 4423.02 6,417 0.4 17,256
Census Tract 4445 6,414 0.8 8,479
Census Tract 4076 6,390 0.4 16,183
Census Tract 4306 6,385 0.9 7,313
Census Tract 4507.45 6,374 2.1 3,090
Census Tract 4261 6,364 1.2 5,408
Census Tract 4424 6,347 0.6 10,386
Census Tract 4419.23 6,333 0.6 10,867
Census Tract 4336 6,307 0.6 10,329
Census Tract 4305 6,289 1.0 6,247
Census Tract 4324 6,279 2.5 2,524
Census Tract 4065 6,196 0.3 21,540
Census Tract 4045.02 6,194 1.2 5,209
Census Tract 4086 6,167 0.4 15,069
Census Tract 4308 6,165 0.7 8,865
Census Tract 4017 6,121 2.2 2,756
Census Tract 4010 6,097 0.4 13,743
Census Tract 4312 6,091 0.8 7,788
Census Tract 4446.01 6,083 1.2 5,156
Census Tract 4070 6,079 0.3 18,245
Census Tract 4506.07 6,054 1.8 3,306
Census Tract 4514.01 6,053 1.8 3,384
Census Tract 4506.06 6,026 0.8 7,695
Census Tract 4507.44 5,987 1.0 5,903
Census Tract 4403.08 5,946 0.7 8,378
Census Tract 4382.04 5,940 0.6 10,326
Census Tract 4415.01 5,913 1.1 5,358
Census Tract 4431.04 5,901 0.7 8,275
Census Tract 4013 5,887 0.3 17,691
Census Tract 4061 5,887 0.7 8,268
Census Tract 4035.01 5,880 0.3 22,734
Census Tract 4351.02 5,870 1.6 3,642
Census Tract 4402 5,786 0.4 12,909
Census Tract 4363.01 5,785 0.4 14,166
Census Tract 4512.02 5,781 17.7 327
Census Tract 4415.21 5,779 0.6 9,218
Census Tract 4096 5,777 0.3 20,017
Census Tract 4505.02 5,754 4.4 1,319
Census Tract 4085 5,752 0.3 17,920
Census Tract 4361 5,745 0.5 11,796
Census Tract 4358 5,735 0.5 11,338
Census Tract 4417.02 5,728 0.4 13,143
Census Tract 4273 5,719 0.8 7,594
Census Tract 4356.02 5,709 0.4 12,935
Census Tract 4093 5,701 0.4 13,722
Census Tract 4413.02 5,661 0.8 7,351
Census Tract 4044 5,621 1.6 3,506
Census Tract 4236.02 5,615 0.2 35,948
Census Tract 4067 5,567 0.7 8,563
Census Tract 4340 5,564 0.5 11,832
Census Tract 4503 5,548 1.2 4,585

Showing the 100 most populous of 378 — the rest are shown on the map.

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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.

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