California

Alameda

1,682,353
2020 population
1860
first census record
17
census records

About Alameda

Alameda, California, first appears in the United States federal census in 1860, when it recorded a population of 8,927. At the most recent census, in 2020, its population stood at 1,682,353.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 3 documented military engagements have been recorded within the county, among them San Francisco Bay Ohlone Conflict, Alta California Costanoan/Ohlone Violence, San Francisco Bay Mound Conflicts, and 161 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
20201,682,353
20101,510,271
20001,443,741
19901,279,182
19801,105,379
19701,073,184
1960908,209
1950740,315
1940513,011
1930474,883
1920344,177
1910246,131
1900130,197
189093,864
188062,976
187024,237
18608,927
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in Alameda

Military engagements that took place in Alameda, California.

San Francisco Bay Ohlone Conflict
1000
Alta California Costanoan/Ohlone Violence
1000
San Francisco Bay Mound Conflicts
1100

Historic places in Alameda

National Register of Historic Places listings in Alameda, California.

USS POTOMAC (yacht)
Oakland
Women's Athletic Club of Alameda County
Oakland
Alameda City Hall
Alameda
Oakland YWCA Building
Oakland
Abbey, The-Joaquin Miller House
Oakland
St. Joseph's Basilica
Alameda
Masonic Temple and Lodge
Alameda
American Bag Co.-Union Hide Co.
Oakland
Lightship WAL-605, RELIEF
Oakland
Paramount Theatre
Oakland
Ladies' Relief Society Children's Home
Oakland
Corder Building
Berkeley
Panoramic Hill
Berkeley
Boone's University School
Berkeley
California Hotel
Oakland
Fox-Oakland Theater
Oakland
Dunsmuir House
Oakland
Founders' Rock
Berkeley
Federal Realty Building
Oakland
Cloyne Court Hotel
Berkeley
Hillside School
Berkeley
Hotel Menlo
Oakland
Girton Hall
Berkeley
Livermore Carnegie Library and Park
Livermore
Browse all Californiahistoric sites ›

Other counties in California

Explore census history and historic records for more California counties.

YubaAlpineAmadorButteCalaverasColusaContra CostaDel NorteEl DoradoFresnoGlennHumboldtImperialInyoKernKingsKlamathLakeLassenLos Angeles
Unlimited access

Everything a full report reveals about Alameda County, California

This page charts the census history of Alameda County, California. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
First month just $5.99, then $11.99 a month. Unlimited locations, cancel anytime.

Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.

Start your Alameda County, California report
Or see a real report first

Explore California records

Californiahistory ›NRHP historic sites ›Notable people from California›

Frequently asked about Alameda

When does Alameda first appear in the US census?
Alameda, California first appears in the federal census in 1860, with a recorded population of 8,927.
What is the population of Alameda?
At the most recent federal census (2020), Alameda had a recorded population of 1,682,353.
Were any battles fought in Alameda?
3 documented military engagements took place in Alameda, including San Francisco Bay Ohlone Conflict, Alta California Costanoan/Ohlone Violence, San Francisco Bay Mound Conflicts.
How many historic places are in Alameda?
161 sites are listed on the National Register of Historic Places in Alameda, California.
Aubrey Research

Research the history of any US location

Aubrey searches federal archives, archaeological records, historic registers, and primary sources to build a full historical report for any address or place in the United States.

Research your locationView a free sample report