Belmont is located in west California. Belmont is part of San Mateo County. Belmont has 4.62 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Belmont population is 26,503, which has grown 5.49% 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%. Belmont median household income is $106,287 in 2010-2014 and has grown by 31.37% since 2000. The income growth rate is higher than the state average rate of 29.47% and is higher than the national average rate of 27.36%. Belmont median house value is $910,600 in 2010-2014 and has grown by 53.51% since 2000. The house value growth rate is lower than the state average rate of 75.60% and is 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 Belmont is much better than the state average in quality. The Belmont area code is 650.