Willoughby is located in northeast Ohio. Willoughby is between the Lake, Geauga county. Willoughby has 10.25 square miles of land area and 0.09 square miles of water area. As of 2010-2014, the total Willoughby population is 22,361, which has shrunk 1.15% since 2000. The population growth rate is lower than the state average rate of 1.83% and is much lower than the national average rate of 11.61%. Willoughby median household income is $51,864 in 2010-2014 and has grown by 19.54% since 2000. The income growth rate is about the same as the state average rate of 19.27% and is lower than the national average rate of 27.36%. Willoughby median house value is $145,700 in 2010-2014 and has grown by 12.95% since 2000. The house value growth rate is much lower than the state average rate of 24.98% and is much lower 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 Willoughby is better than the state average in quality. The Willoughby area code is 440.