Black Rock, AR Profile: Facts, Map & Data


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Black Rock, Arkansas - Basic Facts

The City of Black Rock had a population of 621 as of July 1, 2017. Black Rock ranks in the lower quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Arkansas. See peer rankings below.

The primary coordinate point for Black Rock is located at latitude 36.1062 and longitude -91.1075 in Lawrence County. The formal boundaries for the City of Black Rock (see map below) encompass a land area of 3.2 sq. miles and a water area of 0.14 sq. miles. Lawrence County is in the Central time zone (GMT -6). The elevation is 315 feet.

The City of Black Rock (GNIS ID: 2403870) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Black Rock is located within Township of Black Rock, a minor civil division (MCD) of Lawrence County.

Beneath the boundary map are tables with Black Rock population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Black Rock: Blackrock.

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City of Black Rock, AR Boundary Map

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Boundary Maps: Township of Black Rock | Lawrence County | Arkansas Counties

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Black Rock, AR Data & Demographics (As of July 1, 2017)


Total Population 621
Daytime Population: Workers 137
Daytime Population: Residents 385
Total Daytime Population (TDP) 522
Ratio TDP/Total Population1 0.84
Population in Households 621
Population in Familes 538
Population in Group Qrtrs 0
Population Density2 194
Diversity Index3 7


Median Household Income $38,353
Average Household Income $48,222
Per Capita Income $18,658


Total Housing Units 305 (100%)
Owner Occupied HU 184 (60.3%)
Renter Occupied HU 59 (19.3%)
Vacant Housing Units 61 (20.0%)
Median Home Value $92,254
Average Home Value $126,786


Total Households 244
Average Household Size 2.55
Family Households 182
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population -0.88% -0.99%
Households -0.82% -1.0%
Families -0.08% -1.12%
Median Household Income   1.07%
Per Capita Income   2.46%

Black Rock, AR - Peer Comparisons by Rank and Percentile

The table below compares Black Rock to the other 540 incorporated cities, towns and CDPs in Arkansas by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 266 51st
Population Density # 417 23rd
Diversity Index # 529 2nd
Median Household Income # 243 55th
Per Capita Income # 402 26th

Additional comparisons and rankings can be made with a VERY EASY TO USE Arkansas Census Data Comparison Tool.

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