Counties in Connecticut
Each county page says how cases move there under Connecticut's rules, and lists the police agencies that serve it.
9 counties, largest first
- Capitol Planning Region994,115 people · 33 agencies
- Western Connecticut Planning Region640,482 people · 18 agencies
- South Central Connecticut Planning Region578,741 people · 17 agencies
- Naugatuck Valley Planning Region463,349 people · 15 agencies
- Greater Bridgeport Planning Region337,697 people · 6 agencies
- Southeastern Connecticut Planning Region284,015 people · 16 agencies
- Lower Connecticut River Valley Planning Region177,311 people · 7 agencies
- Northwest Hills Planning Region114,690 people · 3 agencies
- Northeastern Connecticut Planning Region98,096 people · 4 agencies
Population: Census Bureau county population estimates, Vintage 2025 (cc-est2025-alldata), July 1, 2025.