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The Commemorative
Quarter for
Oklahoma

Summary for Hydro

About Hydro (Click for our profile page)

Located in: Primarily Caddo County (see below). A portion of Hydro extends into Blaine County.

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

Telephone Area Codes: 405 & 572<1>

ZIP Code: 73048<2>

Elevation: 1,540 feet [469.39 m] above sea level<3>

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

Population

Year	Population
2019 Est:<4>	942 (2.79% decrease since 2010)
2010:	969 (8.58% decrease since 2000)
2000:	1,060

Total Area:<5> 0.67 sq. miles [1.7 km²]

Housing Units:<6> 469

GPS Coordinates (Latitude/Longitude)<7>

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

Lat: 35.548700° (or 35°32'55" N)

Lon: -98.578800° (or -98°34'43" W)

USGS Topo Map: Hydro<8>

Federal GNIS/FIPS Codes for Hydro

GNIS ID: 2412785

FIPS State / Place Code: 40 / 36700

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

About Caddo County

The town of Anadarko is the County Seat for {Caddo County}.

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

Population

Year	Population
2019 Est:	28,762 (3.17% decrease since 2010)
2010	29,703 (1.48% decrease since 2000)
2000:	30,150

Total Area: 1,290 sq. miles [3,341.6 km²]

Housing Units: 13,141

Federal GNIS/FIPS Codes for Caddo

GNIS ID: 1101795

FIPS State / County Code: 40 / 015

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

About Oklahoma

From the US Census

Population

Year	Population
2019 Est:	3,960,676 (5.58% increase since 2010)
2010:	3,751,351 (8.71% increase since 2000)
2000:	3,450,654

Websites for State of Oklahoma

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

Tourism: https://www.travelok.com/

Parks: https://www.travelok.com/state-parks

Fishing: https://www.travelok.com/fishing-trail

Hunting: https://www.travelok.com/hunting

Federal GNIS/FIPS Codes for State of Oklahoma

GNIS ID: 1102857

FIPS State: 40

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

Footnotes ...

<1>	When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 405 code has been Overlayed with the 572 area code. New phone numbers in the Hydro area will be assigned with one of these codes: 405 or 572. As a result, placing a call in the Hydro area will require 10-digit dialing (where you enter both the area code and then the phone number).
<2>	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 town (such as Hydro). When looking for a ZIP Code, whether Hydro or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<3>	The elevation is an estimate for the area around Hydro - it will be higher in some places and lower in others.
<4>	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.
<5>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Hydro. 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.
<6>	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).
<7>	Longitude & latitude values may not be the geographic center of Hydro, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<8>	Name of the USGS 7.5 Minute topographic map which includes Hydro.