Living Person
Alameda_County,_California
is
As of April 15, 2026
6 years old
approximately!
Date of Birth
(2020 ) is
Rat
Year
* Calculated from Wikipedia data.
Accuracy is not guaranteed.
approx.Cosmic Age Calculator
Moon
approx. 85.2 years old
Mercury
approx. 26.5 years old
Venus
approx. 10.4 years old
Mars
approx. 3.4 years old
Jupiter
approx. 0.5 years old
Saturn
approx. 0.2 years old
* Calculated based on each planet's orbital period.
Alameda County | |
|---|---|
Mission Peak in the Diablo Range Alameda County coast on San Francisco Bay | |
 Flag  Seal | |
 Interactive map of Alameda County | |
| Coordinates: 37°39′N 121°55′W / 37.65°N 121.91°W | |
| Country |  United States |
| State |  California |
| Region | Bay Area |
| Incorporated | March 25, 1853 |
| Named after | Rancho Arroyo de la Alameda (also see Alameda Creek) |
| County seat | Oakland |
| Largest city | Oakland (population) Fremont (area) |
| Government | |
| • Type | Council–CAO |
| • Body | Alameda County Board of Supervisors |
| • President | David Haubert |
| • Vice President | Lena Tam |
| • Board of Supervisors | Supervisors
|
| • County Administrator's Office | Susan S. Muranishi |
| Area | |
• Total | 821 sq mi (2,130 km) |
| • Land | 739 sq mi (1,910 km) |
| • Water | 82 sq mi (210 km) |
| Highest elevation | 3,843 ft (1,171 m) |
| Population (2020) | |
• Total | 1,682,353 |
• Estimate (2025) | 1,636,630  |
| • Density | 2,280/sq mi (879/km) |
| GDP | |
| • Total | $168.506 billion (2022) |
| Time zone | UTC−8 (Pacific Time Zone) |
| • Summer (DST) | UTC−7 (Pacific Daylight Time) |
| Area codes | 510, 341, 925 |
| FIPS code | 06-001 |
| Congressional districts | 10th, 12th, 14th, 17th |
| Website | ACgov.org |
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