Union City, CA population, income and ZIP codes

Union City city is a small city in California, with 68,141 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #134 of 1,618 ranked by population — larger than 91% of them. The median age here is 42.1 years against 39.1 nationally, a slightly older profile than the country as a whole. At this size the Census also publishes one-year estimates; the five-year values used here are steadier and let you compare against smaller neighbours on the same basis.

Households in Union City city earn a median of $137,194 a year, 74.7% above the national figure of $78,538 and 51% above the $91,111 median for the 1,050 California cities we cover. Median household income counts every pre-tax dollar arriving at an address — wages, self-employment, Social Security, pensions, interest and public assistance — for everyone living there, so multi-earner households pull the figure up even where individual pay is modest. Poverty reaches 7% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Union City city is valued at $1,058,200, 248.8% above the national figure and 79% above the $589,600 peer median, while median gross rent runs $2,713 a month, 93% above the national figure, or roughly $32,556 across a full year. A household on the local median income would put about 23.7% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 7.7×, against roughly 3.9× nationally, so buying is out of reach on local earnings alone and the ownership market leans on outside income, equity or dual high earners. 67% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

Home values sit at 7.7× median household income, far past the 3.9× national mark, so ownership costs here are set by something other than local wages — second homes, retirees with equity, or commuters earning elsewhere.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.