Fremont is a city in California that was incorporated on January 23, 1956, from the merger of five smaller communities: Centerville, Irvington, Mission San Jose, Niles, and Warm Springs. The area now comprising Fremont and the adjoining cities of Newark and Union City was formerly known as Washington Township. Fremont is located in the southeast area of the San Francisco Bay Area in Alameda County. The city is named after John Charles Frémont, 'the Great Pathfinder.' Fremont apartments for rent comparison page shows most up to date rent information on Fremont apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.