California
Mariposa County
On record
Checked 19 Aug 2026- Technologies
- 4
- Systems
- 7
- Devices mapped
- 26
Mariposa County, California. Device data © OpenStreetMap contributors (ODbL), with community reporting via DeFlock. Open the full map →
Mariposa County has no incorporated cities. The county hub brings together systems operated by county departments and by Yosemite National Park, plus community-reported devices that have not been assigned to an agency.
What's in use here
The District Attorney told the Board in 2022 that a drone was its only equipment covered by California's military-equipment law. The Board adopted Ordinance 1183, but the public record reviewed does not identify the model, cost, flight history, or retention period.
The Sheriff's published equipment list names several DJI aircraft, including a thermal-camera model. Ordinance 1174 and Policy 606 govern the program, and the Board held annual public hearings in 2023 and 2024.
Yosemite uses license plate reader cameras for traffic counts and travel times. The park reports seven active sites, while its partner reported more than 50 cameras at more than 14 locations in 2025. The public records do not yet resolve which company supplied the system.
The Sheriff implemented Axon body cameras in 2019. The Board approved a new $311,863.73 Axon agreement in 2024, and the current policy sets a 60-day minimum for non-evidentiary recordings.
The Board approved a five-year Axon body-camera agreement for the Probation Department in 2021, worth up to $52,090.53. Deployment, device count, policy, and retention remain unconfirmed in the records reviewed.
The District Attorney's fiscal year 2024-25 budget named body cameras for investigators as a goal. The budget does not establish a purchase, device count, vendor, policy, or deployment.
other
The Sheriff launched a cloud-based Mark43 computer-aided dispatch and records system after the Board approved an agreement that reached $1,125,154.53. The executed agreement and its data terms are not among the public records reviewed.
Who runs it
The agency is the accountability unit: who voted, whose policy applies, and who answers a records request.
| Agency | Jurisdiction | Systems |
|---|---|---|
| Mariposa County Sheriff's Office | Mariposa County | 3 |
| Mariposa County District Attorney's Office | Mariposa County | 2 |
| Mariposa County Probation Department | Mariposa County | 1 |
| National Park Service, Yosemite National Park | Yosemite National Park, including areas in Mariposa County and neighboring counties | 1 |
| 4 agencies on record. A jointly run system counts against each of its operators, so this column is not a county total. | ||
Trackers
Meetings, contracts, records
Nothing listed yet. The trackers launch here, and facts appear only with their sources.
How the inventory works →What you can do
Civic action
Show up
Public comment is open to any resident, and you do not have to be an expert to use it. We have not yet confirmed where the bodies that decide for Mariposa County meet. How the inventory works explains what we check and how to check it yourself.
How the inventory works →Personal protection
Protect yourself
Practical steps to shrink your personal data trail. Our guides publish at launch; until then, EFF's Surveillance Self-Defense is the best starting point.
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