In 1848 there were about 1000 inhabitants of San Francisco.
The Gold Rush began in 1848 when gold was found by James W. Marshall at Sutter’s Mill in Coloma, California.
Adventurers from all nations, and merchandise of all kinds began to pour into the town, on the way to the mining region.
They were mostly men, but some women started arriving as well.
By 1849 there were 100,000 inhabitants.