License plate readers in Johnston, IA
Volunteers have documented 18 automated license plate readers inside Johnston. That is the 12th-largest total among the 20 Iowa cities indexed here, and 2.2% of the statewide total. Its 0.9 readers per square mile spread across 19.5 square miles — thinner coverage than 76% of the 2,231 cities indexed nationally. Every one of them is a Flock Safety unit. Where a mount was recorded, volunteers logged 5 on poles and 5 on street lamps.
Updated August 14, 2026.
18
readers documented
0.9
per square mile
12th
of 20 indexed Iowa cities
2.2%
of Iowa’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 Safety18 · 100%
What volunteers recorded
- Monitoring public roads
- 18 cameras are tagged as watching public streets or traffic.
- Recorded operators
- Johnston Police Department (15). Who operates these cameras nationally →
- How they’re mounted
- pole (5), street lamp (5), traffic signal (1)
- Coverage area
- 19.5 square miles of land inside city limits.
Nearby
Learn more: What a Flock camera looks like · How ALPRs work
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.