California Admission Day – Sep. 9, 2026

Expected California Admission Day Deals

California Admission Day, while not a commercial holiday, offers unique opportunities for local businesses and historical institutions to engage the public. Expect special exhibits and free admission at places like the California State Capitol Museum and the California Museum in Sacramento. Local historical societies across the state may host open houses or walking tours. Retailers focusing on California-themed products or local artisans might offer special discounts. Restaurants could feature historical California cuisine or locally sourced ingredients. We will update this page with confirmed live events and programs as September 9 approaches.

History of California Admission Day

The Mexican-American War began in May 1846 when the U.S. declared war on Mexico. American settlers who lived in the territory of California in Mexico revolted against the Mexican government in what is known as the Bear Flag Revolt. The Americans captured Sonoma, hoisted a Bear Flag in the area, and declared it the California Republic. On July 9, 1846, Navy Lieutenant Joseph Warren Revere arrived in Sonoma and replaced the Bear Flag in the territory with a United States flag. Lieutenant Revere officially declared California a possession of the United States. In February 1848, Mexico and the U.S. signed the Treaty of Guadalupe Hidalgo to end the war. This treaty meant that Mexico had to yield a large portion of its Southwest territory — including present-day California — to the U.S.

As of the signing of the treaty, California had a meager population that was not up to the 60,000-inhabitant benchmark a territory needed to achieve statehood. Earlier in January 1848, gold was discovered on the American River near Sacramento, and the territory witnessed a massive influx of immigrants looking for work and good fortune. Thanks to the Gold Rush, a huge increase in population and wealth followed, thus necessitating the need for civil government and local policies.

In 1849, Californians demanded statehood, and California became the 31st state on September 9, 1850. California joined the Union as a free, non-slavery state by the Compromise of 1850 in just about two years of the territory’s incorporation. Its first capital was in San Jose before it was moved to the city of Vallejo for lack of necessary facilities. The capital was later moved to Benicia, a small town, and subsequently to the riverside port of Sacramento in 1854.

How Businesses Can Celebrate California Admission Day