Cameras / California / Union City
License plate readers in Union City, CA
Volunteers have documented 31 automated license plate readers inside Union City. That is the 175th-largest total among the 353 California cities indexed here, and 0.1% of the statewide total. Its density of 1.6 per square mile places Union City near the middle of the 2,395 cities indexed nationally. Not every operator recorded here is a public agency — volunteers also logged Kaiser Permanente.
Checked against OpenStreetMap September 29, 2026 · figures last changed September 27, 2026.
31
readers documented
1.6
per square mile
175th
of 353 indexed California cities · 782nd of 2,395 nationally
0.1%
of California’s documented total
Dot colors follow the manufacturer legend below. Boundary: U.S. Census Bureau, 2025 Cartographic Boundary Files. Locations: © OpenStreetMap contributors.
Who makes them
- Flock Safety23 · 74%
- Motorola Solutions2 · 6%
- Other vendors1 · 3%
- Unknown5 · 16%
What volunteers recorded
- Monitoring public roads
- 22 cameras are tagged as watching public streets or traffic.
- Recorded operators
- California Highway Patrol (2), Kaiser Permanente (2). All 720 recorded ALPR operators, ranked →
- How they’re mounted
- pole (3), light pole (1)
- Coverage area
- 19.4 square miles of land inside city limits.
Nearby
Learn more: How to spot a Flock Safety camera · How ALPRs work · Can you opt out? · California's ALPR statute
These locations were documented in the field by OpenStreetMap volunteers and refresh automatically every six hours. They are evidence of where cameras have been seen — not a complete or official inventory, and cameras may have been added or removed since documentation. Corrections happen upstream: edit OpenStreetMap and this page will update. Read more in our methodology, or download the aggregates in bulk.