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Connecticut statistical areas

The U.S. State of Connecticut currently has nine statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated two combined statistical areas, five metropolitan statistical areas, and two micropolitan statistical areas in Connecticut.[1] As of 2023, the largest of these in the state is the New Haven-Hartford-Waterbury, CT CSA, encompassing the entire state outside of the Bridgeport-Stamford-Danbury, CT MSA in the southwest.

Statistical areas

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The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico.[2] These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.

The OMB defines a core-based statistical area (commonly referred to as a CBSA) as the county or counties (or county-equivalents) surrounding at least one densely-settled core of at least 10,000 population,[2] "plus adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core".[2] The OMB further divides core-based statistical areas based on population into metropolitan statistical areas (MSAs) for those with at least 50,000 and micropolitan statistical areas (μSAs) for those with 10,000 to 49,999 people.[2]

The OMB defines a combined statistical area (CSA) as two or more adjacent core-based statistical areas where the employment interchange rate (% commuting from A to B plus % commuting from B to A) is at least 15%.[2] The primary statistical areas (PSAs) include all combined statistical areas and any core-based statistical area that is not a constituent of a combined statistical area.

The nine United States statistical areas and nine planning regions[3] of the State of Connecticut[a]
Combined statistical area[1] 2025 population (est.)[4] Core-based statistical area[1] 2025 population (est.)[4] County-equivalent 2025 population (est.)[4] Metropolitan division[1] 2025 population (est.)[4]
New Haven-Hartford-Waterbury, CT CSA 2,710,317 Hartford-West Hartford-East Hartford, CT MSA 1,171,426 Capitol Planning Region, Connecticut 994,115 none
Lower Connecticut River Valley Planning Region, Connecticut 177,311
New Haven, CT MSA 578,741 South Central Connecticut Planning Region, Connecticut 578,741
Waterbury-Shelton, CT MSA 463,349 Naugatuck Valley Planning Region, Connecticut 463,349
Norwich-New London-Willimantic, CT MSA 284,015 Southeastern Connecticut Planning Region, Connecticut 284,015
Torrington, CT μSA 114,690 Northwest Hills Planning Region, Connecticut 114,690
Putnam, CT μSA 98,096 Northeastern Connecticut Planning Region, Connecticut 98,096
New York-Newark, NY-NJ-CT-PA CSA 21,859,598
978,179 (CT)		 New York-Newark-Jersey City, NY-NJ MSA 19,498,249 Kings County, New York 2,653,963 New York-Jersey City-White Plains, NY-NJ MD 12,300,480
Queens County, New York 2,358,182
New York County, New York 1,664,862
Bronx County, New York 1,406,332
Westchester County, New York 1,015,743
Bergen County, New Jersey 977,026
Hudson County, New Jersey 735,033
Passaic County, New Jersey 531,624
Richmond County, New York 501,290
Rockland County, New York 357,397
Putnam County, New York 99,028
Suffolk County, New York 1,546,090 Nassau County-Suffolk County, NY MD 2,945,029
Nassau County, New York 1,398,939
Middlesex County, New Jersey 883,335 Lakewood-New Brunswick, NJ MD 2,564,602
Ocean County, New Jersey 673,746
Monmouth County, New Jersey 651,035
Somerset County, New Jersey 356,486
Essex County, New Jersey 896,379 Newark, NJ MD 2,302,337
Union County, New Jersey 601,863
Morris County, New Jersey 524,251
Sussex County, New Jersey 148,063
Hunterdon County, New Jersey 131,781
Bridgeport-Stamford-Danbury, CT MSA 978,179 Western Connecticut Planning Region, Connecticut 640,482 none
Greater Bridgeport Planning Region, Connecticut 337,697
Kiryas Joel-Poughkeepsie-Newburgh, NY MSA 704,620 Orange County, New York 417,669
Dutchess County, New York 300,708
Trenton-Princeton, NJ MSA 399,289 Mercer County, New Jersey 399,289
Kingston, NY MSA 183,330 Ulster County, New York 183,330
Monticello, NY μSA 80,586 Sullivan County, New York 80,586
Hemlock Farms, PA μSA 62,808 Pike County, Pennsylvania 62,808
State of Connecticut 3,688,496
The 7 core-based statistical areas of the State of Connecticut
2025 rank Core-based statistical area[1] Population
2025 estimate[4] Change 2020 Census[5] Change 2010 Census[6]
1 Hartford-West Hartford-East Hartford, CT MSA 1,171,426+3.00%1,137,300−1.07%1,149,657
2 Bridgeport-Stamford-Danbury, CT MSA 978,179+3.72%943,100+3.96%907,159
3 New Haven, CT MSA 578,741+2.53%564,449−0.97%570,001
4 Waterbury-Shelton, CT MSA 463,349+3.20%448,993+0.06%448,738
5 Norwich-New London-Willimantic, CT MSA 284,015+2.02%278,383−4.07%290,198
6 Torrington, CT μSA 114,690+2.21%112,206−8.75%122,959
7 Putnam, CT μSA 98,096+3.03%95,212−1.45%96,617
The two combined statistical areas of the State of Connecticut[b]
2025 rank Combined statistical area[1] Population
2025 estimate[4] Change 2020 Census[5] Change 2010 Census[6]
1 New Haven-Hartford-Waterbury, CT CSA 2,710,317+2.80%2,636,543−1.55%2,678,170
2 New York-Newark, NY-NJ-CT-PA CSA (CT) 978,179+3.72%943,100+3.96%907,159

See also

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Notes

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  1. ↑ An out-of-state area and its population are displayed in green. An area that extends into more than one state is displayed in purple. A purple population number over a black population number show the total population versus the in-state population. The state's abbreviation is also shown next to the in-state total.
  2. ↑ For CSAs comprising populations from multiple states, they are listed twice to show both their intrastate population within that CSA as well as the CSA's total population. Only the intrastate population is ranked.

References

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  1. 1 2 3 4 5 6 Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas (July 21, 2023). "0MB BULLETIN NO. 23-01" (PDF). Office of Management and Budget. Retrieved October 23, 2023.{{cite web}}: CS1 maint: multiple names: authors list (link)
  2. 1 2 3 4 5 "2020 Standards for Delineating Core Based Statistical Areas". Office of Management and Budget. July 16, 2021. Retrieved December 13, 2021.
  3. ↑ "Regional Planning Organizations (RPO)". State of Connecticut Office of Planning and Management. 2024. Retrieved May 23, 2024.
  4. 1 2 3 4 5 6 "County Population Totals and Components of Change: 2020-2025". United States Census Bureau, Population Division. July 2025. Retrieved January 27, 2026.
  5. 1 2 "PROFILE OF GENERAL POPULATION AND HOUSING CHARACTERISTICS". U.S. Census Bureau. 2020. Retrieved January 27, 2026.
  6. 1 2 "Annual Estimates of the Resident Population for Counties: April 1, 2010 to July 1, 2019". U.S. Census Bureau. 2019. Retrieved January 27, 2026.
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41°37′19″N 72°43′38″W / 41.6219°N 72.7273°W / 41.6219; -72.7273 (State of Connecticut)

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