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Summary for San Diego

About San Diego (Click for our profile page)

Located in: Primarily Duval County (see below). A portion of San Diego extends into Jim Wells County.

Time Zone: San Diego lies in the Central Time Zone (CST/CDT)

Telephone Area Code: 361

ZIP Code: 78384<1>

Elevation: 300 feet [91.44 m] above sea level<2>

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

Population

Year	Population
2019 Est:<3>	4,222 (5.93% decrease since 2010)
2010:	4,488 (5.58% decrease since 2000)
2000:	4,753

Total Area:<4> 1.9 sq. miles [4.9 km²]

Housing Units:<5> 1,818

GPS Coordinates (Latitude/Longitude)<6>

For the purpose of mapping and calculating distances, we have chosen the following reference point for San Diego:

Lat: 27.760100° (or 27°45'36" N)

Lon: -98.239300° (or -98°14'21" W)

USGS Topo Map: San Diego<7>

Federal GNIS/FIPS Codes for San Diego

GNIS ID: 2411783

FIPS State / Place Code: 48 / 65180

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

About Duval County

The city of San Diego is the County Seat for {Duval County}.

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

Population

Year	Population
2019 Est:	11,157 (4.84% decrease since 2010)
2010	11,724 (10.64% decrease since 2000)
2000:	13,120

Total Area: 1,795 sq. miles [4,650.6 km²]

Housing Units: 5,523

Official Website: https://www.co.duval.tx.us/

Federal GNIS/FIPS Codes for Duval

GNIS ID: 1383851

FIPS State / County Code: 48 / 131

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

About Texas

From the US Census

Population

Year	Population
2019 Est:	28,986,794 (15.28% increase since 2010)
2010:	25,145,561 (20.59% increase since 2000)
2000:	20,851,820

Websites for State of Texas

Official Website: https://www.texas.gov/

Tourism: https://www.traveltexas.com/

Parks: https://tpwd.texas.gov/

Fishing: https://tpwd.texas.gov/regulations/outdoor-annual/fishing/

Hunting: https://tpwd.texas.gov/regulations/outdoor-annual/hunting/

Federal GNIS/FIPS Codes for State of Texas

GNIS ID: 1779801

FIPS State: 48

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

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 San Diego). When looking for a ZIP Code, whether San Diego or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<2>	The elevation is an estimate for the area around San Diego - it will be higher in some places and lower in others.
<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 2019.
<4>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of San Diego. 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.
<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).
<6>	Longitude & latitude values may not be the geographic center of San Diego, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<7>	Name of the USGS 7.5 Minute topographic map which includes San Diego.