Union City is located in the sunny Bay Area of California and is a prosperous suburb which is part of Silicon Valley. Union City has a strong economic flow because of the variety of business in the area and the rental housing and real estate which retains great value. Many people migrate to this area in search of the perfect job opportunity and a gorgeous family house rental. People who come to this region typically check into Fremont houses for rent as well since it is so close by, but find that cities like Union City offer a great locale, many city amenities and superb rental housing.