Mariposa County Superior Court Announces Closure Order Due to COVID-19 Details Last Updated: Friday, 20 March 2020 16:09 Published: Friday, 20 March 2020 16:06 View Comments March 20, 2020 - Mariposa County Superior Court is official closed, effective immediately due to COVID-19 concerns. This closure will be in effect through April 9, 2020. Source: Mariposa County District Attorney View the discussion thread. back to top