Census Data for Castro Valley

As far as we can tell, Castro Valley has not been included in past Census counts, so there is no population information for this community.

While we don't have census information for Castro Valley, you might be interested in some nearby communities where we do:

• Hayward
  (Less than 2 miles to the south)
  • Jump to our Gazetteer entry for Hayward
  • Hayward is located in Alameda County
  • Jump to TripAdvisor's Tourism page for Hayward <1>
• San Leandro
  (4 miles [6.4 km] to the northwest)
  • Jump to our Gazetteer entry for San Leandro
  • San Leandro is located in Alameda County
  • Jump to TripAdvisor's Tourism page for San Leandro <1>
• Union City
  (7 miles [11.3 km] to the south)
  • Jump to our Gazetteer entry for Union City
  • Union City is located in Alameda County
  • Former name for Union City:
  • Decoto
  • Jump to TripAdvisor's Tourism page for Union City <1>
• Dublin
  (8 miles [12.9 km] to the east)
  • Jump to our Gazetteer entry for Dublin
  • Dublin is located in Alameda County
  • Jump to TripAdvisor's Tourism page for Dublin <1>
• San Ramon
  (8 miles [12.9 km] to the northeast)
  • Jump to our Gazetteer entry for San Ramon
  • San Ramon is located in Contra Costa County
  • Jump to TripAdvisor's Tourism page for San Ramon <1>
• Alameda
  (9 miles [14.5 km] to the northwest)
  • Jump to our Gazetteer entry for Alameda
  • Alameda is located in Alameda County
  • Jump to TripAdvisor's Tourism page for Alameda <1>
• Danville
  (9 miles [14.5 km] to the northeast)
  • Jump to our Gazetteer entry for Danville
  • Danville is located in Contra Costa County
  • Former name for Danville:
  • Inmanville
  • Jump to TripAdvisor's Tourism page for Danville <1>
• Moraga
  (9 miles [14.5 km] to the north)
  • Jump to our Gazetteer entry for Moraga
  • Moraga is located in Contra Costa County
  • Former name for Moraga:
  • Willow Springs
  • Jump to TripAdvisor's Tourism page for Moraga <1>
• Fremont
  (11 miles [17.7 km] to the southeast)
  • Jump to our Gazetteer entry for Fremont
  • Fremont is located in Alameda County
  • Former names for Fremont:
  • Centerville
  • Irvington
  • Mission San Jose
  • Niles
  • Warm Springs
  • Jump to TripAdvisor's Tourism page for Fremont <1>
• Newark
  (11 miles [17.7 km] to the south)
  • Jump to our Gazetteer entry for Newark
  • Newark is located in Alameda County
  • Jump to TripAdvisor's Tourism page for Newark <1>
• Piedmont
  (11 miles [17.7 km] to the northwest)
  • Jump to our Gazetteer entry for Piedmont
  • Piedmont is located in Alameda County
  • Jump to TripAdvisor's Tourism page for Piedmont <1>
• Pleasanton
  (11 miles [17.7 km] to the east)
  • Jump to our Gazetteer entry for Pleasanton
  • Pleasanton is located in Alameda County
  • Jump to TripAdvisor's Tourism page for Pleasanton <1>
• Continue List   (550 more) ...
  • Blackhawk - Camino Tassajara
    (12 miles [19.3 km] to the northeast)
    • Jump to our Gazetteer entry for Blackhawk - Camino Tassajara
    • Blackhawk - Camino Tassajara is located in Contra Costa County
  • Oakland
    (12 miles [19.3 km] to the northwest)
    • Jump to our Gazetteer entry for Oakland
    • Oakland is located in Alameda County
    • Jump to TripAdvisor's Tourism page for Oakland <1>
  • Foster City
    (13 miles [20.9 km] to the southwest)
    • Jump to our Gazetteer entry for Foster City
    • Foster City is located in San Mateo County
    • Jump to TripAdvisor's Tourism page for Foster City <1>

Alameda County ...

Castro Valley is located in Alameda County<2>.

For more information, please visit our Census Page for Alameda County.

Miscellaneous Information for Castro Valley ...

The Federal government has assigned various identifying codes to each community, county and state. At one time or another, the US Census Bureau has used one (or more) of the following identifiers when referring to either Alameda County or the community of Castro Valley:

• The GNIS Codes ...
  • The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Castro Valley:
  • GNIS ID for Castro Valley: 1658237
  • GNIS ID for Alameda County: 1675839
  • GNIS ID for State of California: 1779778

• The FIPS Codes ...
  • An earlier (and largely obsolete) identification method was called the Federal Information Processing Standard (FIPS):
  • State Code: 06 (California)
  • County Code: 001 (Alameda County)
  • Place Code: 11964 (Castro Valley)
  • State & County Code: 06/001 (California / Alameda County)
  • State & Place Code: 06/11964 (California / Castro Valley)

• Misc. Census Codes ...
  • Castro Valley is located in Census Region #4 (the West Region) and Division #9 (the Pacific Division).

• The US Postal Service ZIP Code ...
  • While some people have used ZIP codes to identify a community, the ZIP codes were actually created to make mail delivery more efficient by grouping addresses together. Although a ZIP Code doesn't specifically identify a community like Castro Valley, they do identify addresses that are in (or near) the community. It's important to remember that the boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes.
  • Our list of ZIP codes for Castro Valley:<3>
  •  & .

• Census ZCTA Codes ...
  • The US Census Bureau created statistical entities that they call ZIP Code Tabulation Areas (ZCTAs) and these ZCTAs are frequently confused with the ZIP codes that come from the US Postal Service (USPS).
  • ZCTAs were first created for the 2000 Census and at that time, they were based upon the USPS ZIP codes. While largely covering the same areas, the boundaries of a ZCTA do not necessarily match the boundaries of a postal ZIP code with the same number. For example, while a postal ZIP code can cross a county or state line, a Census ZCTA can not. They should be treated as separate entities with no correlation between them.

For more information about the various Federal identification codes, please visit our Misc Page for Castro Valley.

Off-the-Road Links ...

Unfortunately, we don't know of a website for Castro Valley. If you can help, please contact us through our Feedback Page.

The official website for Alameda County: www.acgov.org/

The official website for State of California: https://www.ca.gov/

The official website of the U.S. Board on Geographic Names (BGN)

The official website of the U.S. Geological Survey (USGS)