Union City, CA Post Offices
Union City, California has a population of 74,501. According to the 2021 census, the city's 2 post offices serve 21,484 households with a median income of 21,484. The city is located in Alameda County and has a land area of 50,240,704 and a water area of .
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Post Office
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Address
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Phone
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Hours
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| Union City, CA Post Office | 3861 Smith St, Union City, California, CA, 94587-9991 |
510-471-1180
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Today 09:30:00 - 16:30:00
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