Mariposa County CAGenweb

This Site is part of the CAGenWeb and USGenWeb Projects.

This county is currently being fostered and is available for adoption by a volunteer interested in Mariposa County.  Please contact our State Coordinator if you're interested.

Mariposa County is located at the southern end of California's Mother Lode region. It was one of the original counties of California, created at the time of statehood in 1850. While it began as the state's largest county, territory that was once part of Mariposa was ceded over time to form all or part of twelve other counties, including all of MercedMaderaFresnoTulareKings, and Kern; and parts of San BenitoMonoInyoSan Bernardino, and Los Angeles. Thus, Mariposa County is known as the "Mother of Counties".

Mariposa County's original seat was a now-nonexistent hamlet known as 
Agua Fria (Spanish for "cold water"), about 3 miles directly west of Mariposa proper on Agua Fria Road, which runs from Highway 140 to the south, to the community of Mt. Bullion to the northwest. Charles Fremont moved the county seat to Mariposa in 1854, resulting in the construction of the Mariposa County Courthouse, whose grounds occupies an entire block. The historic structure is fronted by Bullion Street; Jones Street is to the rear, with 9th and 10th Streets on either side. This handsome, white judicial building erected with whip-sawed wood from nearby forests is the oldest courthouse still in use in California: cases are still tried there to this day. The courthouse is so recognizable that its likeness is on the Mariposa County Seal. Also particularly noteworthy is the courthouse's clock tower and bell, which chimes every hour, on the hour, 24 hours a day, 7 days a week.

The county took its name from 
Mariposa Creek, which was so named by Spanish explorers in 1806, when they discovered a great cluster of butterflies ("mariposas" in Spanish and Portuguese) in the foothills of the Sierra. Each year, the first weekend in May, residents mark the annual arrival of migrating monarch butterflies with a "Butterfly Days" festival and parade.

Source: Wikipedia
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In the California map on the left, Mariposa county (in red) is adjacent to these five counties: Researching adjacent counties can sometimes be helpful.

Past Mariposa County Coordinators

These individuals are owed a debt of gratitude for their selfless efforts to help researchers of Mariposa County.

  • Jacquie Ansell (1996 - 1997)
  • Carolyn Feroben (1997 - 2006)
  • Sharon Dulcich (Co-Coordinator, 2001 - 2003)
  • Colleen Pustola (2006 - 2008)
  • Sharon Dulcich (2008 - 2012)
  • Martha A. Crosley-Graham (2013 - 2014)
  • Michelle Hoftiezer (2015 - 2017)

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State Coordinator
Bob Jenkins
Assistant Coordinator
Jeanette Harper

Mariposa County Coordinator
Fostered by Bill George
Last published 1/1/22.