Black Rock, AR
Black Rock is located in northeast Arkansas. Black Rock is part of Lawrence County. Black Rock has 3.20 square miles of land area and 0.14 square miles of water area. As of 2010-2014, the total Black Rock population is 680, which has shrunk 5.16% since 2000. The population growth rate is much lower than the state average rate of 10.24% and is much lower than the national average rate of 11.61%. Black Rock median household income is $31,875 in 2010-2014 and has grown by 42.25% since 2000. The income growth rate is higher than the state average rate of 28.22% and is much higher than the national average rate of 27.36%. Black Rock median house value is $58,500 in 2010-2014 and has grown by 50.77% since 2000. The house value growth rate is about the same as the state average rate of 49.31% and is higher than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Black Rock is much better than the state average in quality. The Black Rock area code is 870.