Cameras / Massachusetts / Chelsea
License plate readers in Chelsea, MA
Volunteers have documented 18 automated license plate readers inside Chelsea. That is the 14th-largest total among the 28 Massachusetts cities indexed here, and 1.5% of the statewide total. At 8.1 readers per square mile, Chelsea sits in the most densely covered 5% of the 2,430 US cities indexed nationally. Nearly all of them — 94% — are Flock Safety units. Volunteers also recorded non-government operators here, including The Home Depot. Every mount volunteers recorded here is the same kind: poles.
Checked against OpenStreetMap November 14, 2026 · figures last changed October 28, 2026.
18
readers documented
8.1
per square mile
14th
of 28 indexed Massachusetts cities · 1,379th of 2,430 nationally
1.5%
of Massachusetts’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
- 18 cameras are tagged as watching public streets or traffic.
- Recorded operators
- Chelsea Police (9), The Home Depot (4). All 719 recorded ALPR operators, ranked →
- How they’re mounted
- pole (9)
- Coverage area
- 2.2 square miles of land inside city limits.
Nearby
Learn more: How to spot a Flock Safety camera · How ALPRs work · Can you opt out? · How state ALPR laws compare
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.