Blank map of Connecticut by planning region

Connecticut on the map

Connecticut has 9 planning regions; only 3 states have fewer. The largest is Capitol, with 1,027 sq mi of land, and the smallest is Greater Bridgeport, with 140 sq mi: Capitol is about 7 times bigger.

The state capital, Hartford, is in Capitol Planning Region. The capital version marks it on the map.

Capitol Planning Region is the most populous, with 994,115 people in 2025, or 27% of the state. The least populous is Northeastern Connecticut, with 98,096.

Connecticut’s 8 historic counties have had no government since 1960. Since 2022 the Census uses the state’s 9 planning regions (its councils of governments) instead, and so does this map.

What each planning region borders

Capitol borders the most planning regions in the state: 6 (Lower Connecticut River Valley, Naugatuck Valley, Northeastern Connecticut, Northwest Hills, South Central Connecticut, and Southeastern Connecticut).

5 planning regions touch another state. 3 border Massachusetts: Capitol, Northeastern Connecticut, and Northwest Hills. 2 border Rhode Island: Northeastern Connecticut and Southeastern Connecticut. 2 border New York: Northwest Hills and Western Connecticut.

5 planning regions are on the coast: Greater Bridgeport, Lower Connecticut River Valley, South Central Connecticut, Southeastern Connecticut, and Western Connecticut. 1 planning region is fully inland, with no coast and no border with another state or country.

Number key

Numbers follow alphabetical order, from 1 (Capitol) to 9 (Western Connecticut). Area is land area, without lakes or sea, and population is the Census estimate for July 1, 2025; “Borders” counts neighboring planning regions in the same state.