Cromwell is located close to the center of Oklahoma. Cromwell is part of Seminole County. Cromwell has 1.09 square miles of land area and 0.00 square miles of water area. As of 2010-2014, the total Cromwell population is 307, which has grown 15.85% since 2000. The population growth rate is much higher than the state average rate of 10.67% and is higher than the national average rate of 11.61%. Cromwell median household income is $34,722 in 2010-2014 and has grown by 12.61% since 2000. The income growth rate is much lower than the state average rate of 38.43% and is much lower than the national average rate of 27.36%. Cromwell median house value is $66,700 in 2010-2014 and has grown by 223.79% since 2000. The house value growth rate is much higher than the state average rate of 62.66% 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 Cromwell is worse than the state average in quality. The Cromwell area code is 405.