Learn About
The Commemorative
Quarter for
Arkansas

Summary for Black Rock

About Black Rock (Click for our profile page)

Located in: Lawrence County (see below)

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

Telephone Area Codes: 870 & 327<1>

ZIP Code: 72415<2>

Elevation: 270 feet [82.3 m] above sea level<3>

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

Population

Year	Population
2019 Est:<4>	598 (9.67% decrease since 2010)
2010:	662 (7.67% decrease since 2000)
2000:	717

Total Area:<5> 3.34 sq. miles [8.7 km²] - of which 4.07% is water (0.14 sq. miles [0.4 km²])

Housing Units:<6> 309

GPS Coordinates (Latitude/Longitude)<7>

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

Lat: 36.107000° (or 36°6'25" N)

Lon: -91.107500° (or -91°6'27" W)

USGS Topo Map: Black Rock<8>

Federal GNIS/FIPS Codes for Black Rock

GNIS ID: 2403870

FIPS State / Place Code: 05 / 06700

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

About Lawrence County

The city of Walnut Ridge is the County Seat for Lawrence County.

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

Population

Year	Population
2019 Est:	16,406 (6.35% decrease since 2010)
2010	17,518 (1.44% decrease since 2000)
2000:	17,774

Total Area: 592 sq. miles [1,534.2 km²]

Housing Units: 8,000

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

Federal GNIS/FIPS Codes for Lawrence

GNIS ID: 66865

FIPS State / County Code: 05 / 075

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

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 Black Rock)

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 Black Rock area will be assigned with one of these codes: 870 or 327. As a result, placing a call in the Black Rock 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 city (such as Black Rock). When looking for a ZIP Code, whether Black Rock 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 Black Rock - 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 Black Rock. 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 Black Rock, 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 Black Rock.