Yerba Buena to Gold Rush
A cove-side settlement became an American boomtown through conquest, migration and an economy aimed at the mines.
In 1835, Yerba Buena began as a small civilian settlement within Mexican Alta California. Twelve years later it was renamed San Francisco under United States occupation. Gold discovered in the Sierra in 1848 then transformed the harbor into the supply gate for a global rush.
Yerba Buena in 1846–47: a small settlement facing a cove that would later be filled beneath the financial district.
Bosqui Engraving & Printing Co. / Library of Congress, via Wikimedia CommonsPublic domain
A town inside Mexican California
Yerba Buena grew near a sheltered cove below today’s Chinatown and financial district. Mexican land grants reorganized former mission property into ranchos, while Indigenous people continued to labor and live throughout the region under new systems of dependency and dispossession.
The United States seized the settlement during the Mexican-American War in 1846. On January 30, 1847, officials renamed it San Francisco. The change placed the town inside an expanding American claim even before the war formally ended.
The harbor as machine
News of gold sent ships from Latin America, Europe, China, Australia and the eastern United States toward the Bay. Crews sometimes abandoned vessels for the mines. Some ships became warehouses, hotels or landfill; wharves reached farther into the cove; merchants sold food, tools, credit and transport to miners.
The boom created fortunes while intensifying anti-Indigenous violence, environmental damage in mining regions and unequal labor systems. The city’s cosmopolitan image and its racial exclusions grew together.
A global city with guarded doors
Chinese migrants became essential to mining, railroad construction, agriculture, laundries and urban commerce. Chilean, Mexican and Peruvian miners and merchants also shaped early California. Yet taxes, violence, discriminatory laws and property rules worked to reserve opportunity for white settlers.
This pattern—recruit labor and capital, then police belonging—will repeat across the course.
Field assignment
Take the lesson outside
Stand at Portsmouth Square or explore it in Street View. Face east and imagine water beginning near Montgomery Street. List three businesses a port serving the mines would need.