Property research by county

Connecticut county reference

9 counties and county equivalents in Connecticut. Search names or FIPS codes, compare Census geography and keep the original sources with your work.

• Capitol Planning Region

  Connecticut · FIPS 09110

  994,115 residents · 2025 estimate

• Greater Bridgeport Planning Region

  Connecticut · FIPS 09120

  337,697 residents · 2025 estimate

• Lower Connecticut River Valley Planning Region

  Connecticut · FIPS 09130

  177,311 residents · 2025 estimate

• Naugatuck Valley Planning Region

  Connecticut · FIPS 09140

  463,349 residents · 2025 estimate

• Northeastern Connecticut Planning Region

  Connecticut · FIPS 09150

  98,096 residents · 2025 estimate

• Northwest Hills Planning Region

  Connecticut · FIPS 09160

  114,690 residents · 2025 estimate

• South Central Connecticut Planning Region

  Connecticut · FIPS 09170

  578,741 residents · 2025 estimate

• Southeastern Connecticut Planning Region

  Connecticut · FIPS 09180

  284,015 residents · 2025 estimate

• Western Connecticut Planning Region

  Connecticut · FIPS 09190

  640,482 residents · 2025 estimate

Use the county data

Use the county name and FIPS code to identify the correct jurisdiction before collecting parcel, assessor, recorder or court information. Compare this national reference with the separate property-data coverage directory.

National geographic coverage does not mean that parcel records or probate feeds are connected for every county.

Geography: 2025 U.S. Census Gazetteer. Population: Vintage 2025 estimates, July 1, 2025. County equivalents include parishes, boroughs, independent cities and planning regions. Puerto Rico population is not supplied by this population file.