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Union City CA
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Union City, CA

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Union City is a city in Alameda County, California, United States. It was incorporated in 1959, combining the communities of Alvarado and Decoto. Alvarado was the original county seat of Alameda County, and the site of the first county courthouse is a California Historical Landmark (#503). The city celebrated its 50th Anniversary in 2009. The population was 69,516 as of the 2010 U.S. Census.
Union City is located in the southern part of the East Bay of the San Francisco Bay Area. According to the United States Census Bureau, the city has a total area of 19.5 square miles (50.4 km²), all land with no bay frontage. The Niles Cone aquifer, managed by the Alameda County Water District, supplies much of the water consumed by Union City. It is bordered by Hayward to the north and Fremont to the south. The three cities of Union City, Fremont, and Newark make up the "Tri-City" area.
The 2010 United States Census reported that Union City had a population of 69,516. The population density was 3,570.6 people per square mile (1,378.6/km²). The racial makeup of Union City was 16,640 (23.9%) White, 4,402 (6.3%) African American, 329 (0.5%) Native American, 35,363 (50.9%) Asian, 892 (1.3%) Pacific Islander, 7,253 (10.4%) from other races, and 4,637 (6.7%) from two or more races. Hispanic or Latino of any race were 15,895 persons (22.9%).

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