A Gazetteer for the United States and Canada

Hayward, California
(Alameda County)

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The location of Hayward

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Located in: Alameda County (see below)

Time Zone: Hayward lies in the Pacific Time Zone (PST/PDT)

Telephone Area Code: (510)

ZIP Codes: 94540-94545, 94557<1>

Elevation: Near sea level<2>

From the 2010 US Census     (For more detail, see our Census Page for Hayward)


2016:<3>     158,937   (10.23% increase since 2010)  
2010:     144,186   (2.97% increase since 2000)
2000:     140,030

Total Area:<4>   63.7 sq. miles [165.1 km²]   - of which 28.9% is water (18.43 sq. miles [47.7 km²])

Housing Units:<5>   48,296

Official Website:

GPS Coordinates (Latitude/Longitude)<6>

For the purpose of mapping and calculating distances, we have chosen a reference point within Hayward. The point that we are using is located at these GPS coordinates - Latitude: 37.6689, Longitude: -122.0809     [Map].

DMS - Degrees, Minutes, Seconds

Lat:   37° 40' 8"
Lon:   -122° 4' 51"

Name of USGS Topo Map:<7>   Hayward

Federal GNIS/FIPS Codes for Hayward

GNIS ID:   2410724
FIPS State / Place Code:   06 / 33000

(For more about Federal Codes, see our Misc Page for Hayward)

About Alameda County

The city of Oakland is the County Seat for Alameda County.

From the 2010 US Census     (For more detail, see our Census Page for Alameda)


2016:     1,647,704   (9.1% increase since 2010)  
2010:     1,510,271   (4.61% increase since 2000)
2000:     1,443,741

Total Area:   821 sq. miles [2,127.2 km²]   - of which 10.02% is water (82.3 sq. miles [213.2 km²])

Housing Units:   582,549

Official Website:

Federal GNIS/FIPS Codes for Alameda

GNIS ID:   1675839
FIPS State / County Code:   06 / 001

(For more about Federal Codes, see our Misc Page for Hayward)

About California

From the US Census


2016:     39,250,017   (5.36% increase since 2010)  
2010:     37,253,956   (9.99% increase since 2000)
2000:     33,871,648

Websites for State of California

Official Website:

Federal GNIS/FIPS Codes for State of California

GNIS ID:   1779778
FIPS State:   06

(For more about Federal Codes, see our Misc Page for Hayward)

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The official website for Hayward:

The official website for Alameda County:

The official website for State of California:

Footnotes ...

<1>ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a city (such as Hayward). When looking for a ZIP Code, whether Hayward or elsewhere, it's always best to check the website of the United States Postal Service (USPS).

Our list of ZIP Codes for Hayward includes: 94540, 94541, 94542, 94543, 94544 & 94545.

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<2>The elevation is an estimate for the area around Hayward - it will be higher in some places and lower in others.

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<3>Every year, the US Census Bureau creates a population estimate for the preceeding year. Keep in mind that this value is an estimate and not an actual count. The most recent Census estimate is for the year 2016.

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<4>The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Hayward. The value given by the Census Bureau reflects their statistical (or sampling) requirements. For example, if there is a cluster of people living just outside of the community's official boundary, the Census-defined area might be expanded to include that group.

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<5>A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).

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<6>The longitude & latitude values may not be the geographic center of Hayward, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.

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<7>The USGS 7.5 Minute topographic map which includes Hayward.

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For additional information, please visit our Glossary for Hayward.