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Summary for Cairo

About Cairo (Click for our profile page)

Located in: Union County (see below)

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

Telephone Area Codes: 870 & 327<1>

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

GPS Coordinates (Latitude/Longitude)<3>

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

Lat: 33.220100° (or 33°13'12" N)

Lon: -92.869900° (or -92°52'11" W)

USGS Topo Map: Newell<4>

Federal GNIS/FIPS Codes for Cairo

GNIS ID: 56946

FIPS State / Place Code: 05 / 10405

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

About Union County

The community of El Dorado is the County Seat for Union County.

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

Population

Year	Population
2019 Est:<5>	38,682 (6.95% decrease since 2010)
2010	41,573 (8.89% decrease since 2000)
2000:	45,629

Total Area:<6> 1,055 sq. miles [2,733 km²] - of which 1.51% is water (15.98 sq. miles [41.4 km²])

Housing Units: <7> 19,653

Official Website: https://www.unioncountyar.com/

Federal GNIS/FIPS Codes for Union

GNIS ID: 69903

FIPS State / County Code: 05 / 139

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

About Arkansas

From the US Census

Population

Year	Population
2019 Est:	3,020,985 (3.6% increase since 2010)
2010:	2,915,918 (9.07% increase since 2000)
2000:	2,673,400

Websites for State of Arkansas

Official Website: https://portal.arkansas.gov/

Tourism: https://www.arkansas.com/

Parks: https://www.arkansasstateparks.com/

Fishing: https://www.agfc.com/fishing/

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

Federal GNIS/FIPS Codes for State of Arkansas

GNIS ID: 68085

FIPS State: 05

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

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 870 code has been Overlayed with the 327 area code. New phone numbers in the Cairo area will be assigned with one of these codes: 870 or 327. As a result, placing a call in the Cairo area will require 10-digit dialing (where you enter both the area code and then the phone number).
<2>	The elevation is an estimate for the area around Cairo - it will be higher in some places and lower in others.
<3>	Longitude & latitude values may not be the geographic center of Cairo, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<4>	Name of the USGS 7.5 Minute topographic map which includes Cairo.
<5>	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.
<6>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Cairo. 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.
<7>	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).