Planning regions (county equivalents since 2022) · Connecticut

Planning regions (county equivalents since 2022) of Connecticut

Connecticut has 9 planning regions (county equivalents since 2022). Capitol Planning Region is the largest with 994,115 residents in 2025. 9 of the 9 gained residents between 2020 and 2025 by the Census Bureau's estimates.

What planning regions (county equivalents since 2022) are in Connecticut?

Sorted by the 2025 population estimate; sort by any column.

Planning regions (county equivalents since 2022) of Connecticut: 2025 estimate, change since 2020, ACS 2020-2024 5-year estimates

Capitol Planning Region	994,115	+1.7%	66	249	$93,394	$323,700
Western Connecticut Planning Region	640,482	+3.2%	81	146	$128,188	$652,900
South Central Connecticut Planning Region	578,741	+1.4%	23	136	$88,197	$353,100
Naugatuck Valley Planning Region	463,349	+2.9%	27	98	$86,191	$317,700
Greater Bridgeport Planning Region	337,697	+3.7%	21	79	$89,667	$428,800
Southeastern Connecticut Planning Region	284,015	+1.3%	39	68	$86,586	$323,400
Lower Connecticut River Valley Planning Region	177,311	+1.8%	31	45	$104,428	$379,700
Northwest Hills Planning Region	114,690	+2.0%	37	37	$93,551	$335,600
Northeastern Connecticut Planning Region	98,096	+2.9%	32	26	$90,589	$307,600

Source: PEP Vintage 2025 (CO-EST2025); American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Census population estimates

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections