Hamilton city is located in Glenn county California with a geographic area of 0.4 square miles. The total population in Hamilton city is 2,446 with 47.8% male and 52.2% female. Children under age 5 represent 6.1% of the population, under age 18 equal 26.7% of the population and over age 65 is 9.0% of the population. The median household income is $50,552, per capita income is $17,670. There are a total of 871 housing units with 58.2% owner occupied. Education includes 26.5% of residents that are high school graduates and 5.3% with a bachelor's degree or higher. The average temperature in Hamilton city in the summer is 76 degrees, and in the winter 43 degrees.