California's 12th congressional district, Congressional district in Alameda County, United States.
This congressional district covers the East Bay portion of Alameda County and includes Oakland, Berkeley, Emeryville, Alameda, Albany, Piedmont, and most of San Leandro. The territory runs along the eastern shore of San Francisco Bay and forms a continuous urban zone with a mix of residential neighborhoods, university campuses, and commercial districts.
The district was created in 1930 and originally covered parts of Los Angeles County before shifting to San Francisco. The boundaries later moved again and now encompass the East Bay area north and east of the bay itself.
The district population of 734,171 residents represents a diverse mix of White, Hispanic, Asian, Black, and multiracial communities in urban settings.
The area is well connected by major roads and public transit, as the cities sit close to one another. Visitors can contact public offices in the region for general inquiries, which operate during regular business hours.
Barbara Lee was elected with one of the highest vote percentages in the region, reflecting broad local support. The district's population composition mirrors the diversity typical of the East Bay area.
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