California became the 31st U.S. state

On September 9, 1850, California was admitted to the Union as the 31st state, completing one of the fastest paths to statehood in American history. Having become U.S. territory less than two years earlier, it bypassed the customary territorial stage altogether.

The Gold Rush drove the timeline. After gold was found near Sacramento in 1848, more than 60,000 newcomers poured in during 1849 alone, creating an instant demand for civil government that normally took decades of settlement to reach.

California’s admission was no quiet formality. It became the centerpiece of bitter congressional debate over slavery, resolved only by the Compromise of 1850, which brought California in as a free state while making concessions to the South.

Word traveled so slowly that Californians did not learn of their statehood until October 18 — about 40 days after the fact.

The new state had even drawn its own boundaries to enclose the gold-bearing Sierra Nevada, securing the wealth that had hastened its rise.