Union City

Union City sits at the southern edge of Alameda County, bordered by Fremont to the north, Hayward to the west, and Newark to the southwest. Named for the 1959 union of the communities of Alvarado and Decoto, the city has grown into a diverse residential and commercial center along the BART line and Interstate 880 corridor. Its location at the crossroads of the East Bay and South Bay makes it a commuter hub for the broader metropolitan region.

Indigenous / Early History

Ohlone peoples inhabited the southern East Bay flatlands, including the area around Alameda Creek where Union City now stands. The creek served as a boundary and resource corridor, supporting villages and seasonal camps. The fertile soils and access to bay and upland resources sustained indigenous communities for thousands of years.

The area fell within Mission San José lands and later Rancho Ex-Mission San José during the Mexican period.

Founding & Early Development

The two original communities maintained distinct commercial cores and neighborhood identities that are still recognizable in modern Union City's district structure.

Twentieth-Century Growth

Union City's growth accelerated after incorporation and the arrival of BART. Residential subdivisions filled the flatlands between Alvarado and Decoto, and the city's population expanded from a few thousand residents to more than 70,000 by 2020. The Union Landing shopping center and commercial corridors along Union City Boulevard and Alvarado-Niles Road serve regional consumers.

Economy & Employment

Union City's economy includes retail at Union Landing and along major commercial corridors, healthcare at Kaiser Permanente's Fremont Medical Center (nearby), and light industrial and logistics operations in industrial zones. Many residents commute to technology, manufacturing, and professional services jobs in Fremont, Silicon Valley, and the broader East Bay.

The city's BART station and freeway access make it a strategic location for commuters working throughout the Bay Area.

Market & Housing Context

The 2020 U.S. Census recorded 70,143 residents and approximately 21,500 housing units in Union City. Housing includes older homes in the Alvarado and Decoto districts, postwar tract subdivisions, and newer apartment and townhouse developments near BART. American Community Survey data show a relatively balanced mix of owner- and renter-occupied units, with higher rental rates near the transit station.

Union City's housing element addresses production goals, with emphasis on transit-oriented development near the BART station and Intermodal Station area.

Living in Union City

The Old Alvarado district preserves historic buildings and hosts a farmers market and community events. Kennedy Park and Sugioka Park provide recreation. The Union City Historical Museum documents the area's development from agricultural communities to a modern city. The Alameda Creek Trail offers walking and cycling along the creek corridor.

New Haven Unified School District serves Union City students, operating James Logan High School and several elementary and middle schools. The Old Alvarado Chautauqua Days festival celebrates the historic district with parades, craft vendors, and live entertainment. The Union City Boulevard corridor connects the city's northern and southern neighborhoods, linking Decoto and Alvarado through a continuous commercial spine.

Union City Today

Geography & Environment

Union City occupies flat terrain along Alameda Creek at the southern margin of Alameda County. The creek forms a natural boundary and green corridor through the city. The Mediterranean climate brings warm summers and mild winters typical of the southern East Bay flatlands. Garin Regional Park in the nearby hills offers hiking and equestrian trails, and the Alameda Creek Trail provides a continuous path for cyclists and pedestrians connecting Union City to Fremont and the bay.

Transportation & Connectivity

Union City BART station provides rapid transit to Oakland, San Francisco, and Fremont. Interstate 880 runs along the city's western edge. The Dumbarton Bridge corridor via Newark connects to the Peninsula. AC Transit buses serve local routes. Oakland International Airport and San Jose International Airport are both accessible within 30 minutes by car.

Looking Forward

Union City's planning priorities include continued development near BART, revitalization of the Alvarado-Niles Road corridor, housing element compliance, and coordination with Fremont and Newark on regional traffic and creek trail improvements. The Intermodal Station area remains a focal point for mixed-use growth.

The Union City Intermodal Station District Plan envisions additional housing, retail, and public plaza space within walking distance of BART. The city's Mark Green Sports Center provides athletic fields and a community center for youth and adult programs. Union City has invested in LED streetlight conversion and solar installations on municipal buildings as part of its climate action commitments, and the annual Union City International Festival celebrates the community's cultural diversity through food, music, and performances.

The City's Character

Union City is a practical, diverse commuter city shaped by its merger of two historic communities and its position at the intersection of BART and freeway networks. Old Alvarado's preserved storefronts and modern transit-oriented development represent the city's layered history.

“"Union City grew where Alvarado and Decoto met — a southern East Bay crossroads where BART, Alameda Creek, and two community histories converge."

From twin railroad towns to a city of 70,000 at the edge of two Bay Area regions, Union City continues to serve as a residential and transit hub in southern Alameda County. The city's commitment to preserving Old Alvarado while building new housing near BART reflects a planning approach that honors history and accommodates growth simultaneously.