Cameras / California / Diamond Bar
License plate readers in Diamond Bar, CA
Volunteers have documented 50 automated license plate readers inside Diamond Bar. That is the 113th-largest total among the 353 California cities indexed here, and 0.2% of the statewide total. At 3.4 per square mile it is more densely covered than 79% of the 2,395 US cities indexed nationally. Every one of them is a Flock Safety unit.
Checked against OpenStreetMap September 28, 2026 · figures last changed September 12, 2026.
50
readers documented
3.4
per square mile
113th
of 353 indexed California cities · 431st of 2,395 nationally
0.2%
of California’s documented total
Dot colors follow the manufacturer legend below. Boundary: U.S. Census Bureau, 2025 Cartographic Boundary Files. Locations: © OpenStreetMap contributors.
What volunteers recorded
- Monitoring public roads
- 27 cameras are tagged as watching public streets or traffic.
- How they’re mounted
- pole (8), traffic signal (1), street lamp (1)
- Coverage area
- 14.9 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.