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Connecticut counties

Quick answer

Connecticut has 9 counties and county equivalents holding 3,598,348 residents. The statewide sales tax base rate is 6.35% with no local add-ons.

All 9 counties

Ranked by population, Census 2019-2023 ACS 5-year estimates.

CountyPopulationMedian incomeMedian home valueMedian rent
Capitol Planning Region969,029$91,541$298,200$1,351
Western Connecticut Planning Region621,232$124,553$625,400$2,060
South Central Connecticut Planning Region566,803$86,266$328,300$1,463
Naugatuck Valley Planning Region452,303$86,365$290,800$1,288
Greater Bridgeport Planning Region326,296$87,135$397,000$1,482
Southeastern Connecticut Planning Region279,025$84,185$293,900$1,316
Lower Connecticut River Valley Planning Region174,983$101,117$359,000$1,399
Northwest Hills Planning Region112,848$91,035$311,700$1,169
Northeastern Connecticut Planning Region95,829$87,564$281,300$1,153

Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year

More Connecticut data.