Ontario is located in southeast California. Ontario is part of San Bernardino County. Ontario has 49.94 square miles of land area and 0.07 square miles of water area. As of 2010-2014, the total Ontario population is 166,892, which has grown 5.62% since 2000. The population growth rate is much lower than the state average rate of 12.39% and is much lower than the national average rate of 11.61%. Ontario median household income is $54,156 in 2010-2014 and has grown by 27.57% since 2000. The income growth rate is lower than the state average rate of 29.47% and is about the same as the national average rate of 27.36%. Ontario median house value is $255,400 in 2010-2014 and has grown by 82.43% since 2000. The house value growth rate is higher than the state average rate of 75.60% 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 Ontario is close to the state average in quality. The Ontario area codes are 909, 951.