Roca is located in east Nebraska. Roca is part of Lancaster County. Roca has 0.14 square miles of land area and has no water area. As of 2010-2014, the total Roca population is 200, which has shrunk 9.09% since 2000. The population growth rate is much lower than the state average rate of 8.44% and is much lower than the national average rate of 11.61%. Roca median household income is $71,250 in 2010-2014 and has grown by 51.33% since 2000. The income growth rate is much higher than the state average rate of 33.50% and is much higher than the national average rate of 27.36%. Roca median house value is $141,200 in 2010-2014 and has grown by 52.65% since 2000. The house value growth rate is higher than the state average rate of 47.84% 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 Roca is much better than the state average in quality. The Roca area code is 402.