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QuickFacts

Alameda County, California

QuickFacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more.

Chart

Population per square mile, 2010

0.0
1,800.0
3,600.0
5,400.0
7,200.0
9,000.0
10,800.0
12,600.0
14,400.0
16,200.0
18,000.0
Alameda County, California
2,043.6
Alpine County, California
1.6
Amador County, California
64.1
Butte County, California
134.4
Calaveras County, California
44.7
Colusa County, California
18.6
Contra Costa County, California
1,465.2
Del Norte County, California
28.4
El Dorado County, California
106.0
Fresno County, California
156.2
Glenn County, California
21.4
Humboldt County, California
37.7
Imperial County, California
41.8
Inyo County, California
1.8
Kern County, California
103.3
Kings County, California
110.1
Lake County, California
51.5
Lassen County, California
7.7
Los Angeles County, California
2,419.6
Madera County, California
70.6
Marin County, California
485.1
Mariposa County, California
12.6
Mendocino County, California
25.1
Merced County, California
132.2
Modoc County, California
2.5
Mono County, California
4.7
Monterey County, California
126.5
Napa County, California
182.4
Nevada County, California
103.1
Orange County, California
3,807.7
Placer County, California
247.6
Plumas County, California
7.8
Riverside County, California
303.8
Sacramento County, California
1,470.8
San Benito County, California
39.8
San Bernardino County, California
101.5
San Diego County, California
735.8
San Francisco County, California
17,179.1
San Joaquin County, California
492.6
San Luis Obispo County, California
81.7
San Mateo County, California
1,602.2
Santa Barbara County, California
155.0
Santa Clara County, California
1,381.0
Santa Cruz County, California
589.4
Shasta County, California
46.9
Sierra County, California
3.4
Siskiyou County, California
7.2
Solano County, California
503.0
Sonoma County, California
307.1
Stanislaus County, California
344.2
Sutter County, California
157.3
Tehama County, California
21.5
Trinity County, California
4.3
Tulare County, California
91.7
Tuolumne County, California
24.9
Ventura County, California
446.7
Yolo County, California
197.9
Yuba County, California
114.2
0.0
1,800.0
3,600.0
5,400.0
7,200.0
9,000.0
10,800.0
12,600.0
14,400.0
16,200.0
18,000.0
Value Notes

Estimates are not comparable to other geographic levels due to methodology differences that may exist between different data sources.

Some estimates presented here come from sample data, and thus have sampling errors that may render some apparent differences between geographies statistically indistinguishable. Click the Quick Info icon to the left of each row in TABLE view to learn about sampling error.

The vintage year (e.g., V2019) refers to the final year of the series (2010 thru 2019). Different vintage years of estimates are not comparable.

Fact Notes Value Flags

QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Survey of Business Owners, Building Permits.

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