Fremont, CA is a city located in Alameda County, California and has a land area of 69.55 square miles (180.13 km2). The water area for the city is 0.11 square miles or 0.28 km2. There are 5 total unique zip codes in Fremont, California. The area code(s) for Fremont is 341/408/510/650/669/925.
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