Connecticut counties and county equivalents

These are current canonical geography records. Historical boundaries and election reporting units can differ; consult each area's caveats.

• Capitol Planning Region County

  FIPS 09110

• Greater Bridgeport Planning Region County

  FIPS 09120

• Lower Connecticut River Valley Planning Region County

  FIPS 09130

• Naugatuck Valley Planning Region County

  FIPS 09140

• Northeastern Connecticut Planning Region County

  FIPS 09150

• Northwest Hills Planning Region County

  FIPS 09160

• South Central Connecticut Planning Region County

  FIPS 09170

• Southeastern Connecticut Planning Region County

  FIPS 09180

• Western Connecticut Planning Region County

  FIPS 09190