Onancock is located in east Virginia. Onancock is part of Accomack County. Onancock has 1.05 square miles of land area and 0.00 square miles of water area. As of 2010-2014, the total Onancock population is 1,226, which has shrunk 19.61% since 2000. The population growth rate is much lower than the state average rate of 15.63% and is much lower than the national average rate of 11.61%. Onancock median household income is $36,927 in 2010-2014 and has grown by 30.88% since 2000. The income growth rate is lower than the state average rate of 38.81% and is higher than the national average rate of 27.36%. Onancock median house value is $183,000 in 2010-2014 and has grown by 130.48% since 2000. The house value growth rate is higher than the state average rate of 94.18% and is much 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 Onancock is better than the state average in quality. The Onancock area code is 757.