On February 18, 1850, Tuolumne County was officially established, becoming one of California's original counties during the days of the Gold Rush. In 2025, we invite you to join us in commemorating this monumental 175th anniversary. Throughout the year, County organizations and businesses will host a series of events, activities, and celebrations that honor our rich history, diverse culture, and enduring community spirit. Explore the beauty, stories, and traditions that have shaped Tuolumne County for not only the last 175 years, but for centuries before.
Check back for commemorative events and activities.
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