Callahan is located in north Florida. Callahan is part of Nassau County. Callahan has 1.45 square miles of land area and has no water area. As of 2010-2014, the total Callahan population is 1,187, which has grown 23.39% since 2000. The population growth rate is higher than the state average rate of 21.14% and is much higher than the national average rate of 11.61%. Callahan median household income is $29,464 in 2010-2014 and has grown by 16.76% since 2000. The income growth rate is lower than the state average rate of 21.62% and is much lower than the national average rate of 27.36%. Callahan median house value is $150,000 in 2010-2014 and has grown by 84.50% since 2000. The house value growth rate is much higher than the state average rate of 48.06% 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 Callahan is much better than the state average in quality. The Callahan area code is 904.