2%). 2010 percent population 18 and over: 75. 2%; 65 and over: 10. 1%; Mean age: 35. 2. 2014 population quote (rank): 1,015,785 (10) Land area: 175 sq mi. (453 sq km); Alt.: Highest, 4,372 ft.; least expensive, water level Avg. daily temp.: Jan., 49. 4 F; July, 69. https://www.sanjoseca.gov/your-government