# 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. 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.

## Background

The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico. 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, "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". 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.
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%. 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.

## Table

The nine United States statistical areas and nine planning regions of the State of Connecticut :
| Combined statistical area | 2023 population (est.) | Core-based statistical area | 2023 population (est.) | County-equivalent | 2023 population (est.) | Metropolitan division | 2023 population (est.) |
| New Haven-Hartford-Waterbury, CT CSA | 2,665,618 | Hartford-West Hartford-East Hartford, CT MSA | 1,151,543 | Capitol Planning Region, Connecticut | 975,328 | none | none |
| New Haven-Hartford-Waterbury, CT CSA | 2,665,618 | Hartford-West Hartford-East Hartford, CT MSA | 1,151,543 | Lower Connecticut River Valley Planning Region, Connecticut | 176,215 | none | none |
| New Haven-Hartford-Waterbury, CT CSA | 2,665,618 | New Haven, CT MSA | 568,158 | South Central Connecticut Planning Region, Connecticut | 568,158 | none | none |
| New Haven-Hartford-Waterbury, CT CSA | 2,665,618 | Waterbury-Shelton, CT MSA | 456,128 | Naugatuck Valley Planning Region, Connecticut | 456,128 | none | none |
| New Haven-Hartford-Waterbury, CT CSA | 2,665,618 | Norwich-New London-Willimantic, CT MSA | 279,634 | Southeastern Connecticut Planning Region, Connecticut | 279,634 | none | none |
| New Haven-Hartford-Waterbury, CT CSA | 2,665,618 | Torrington, CT μSA | 113,463 | Northwest Hills Planning Region, Connecticut | 113,463 | none | none |
| New Haven-Hartford-Waterbury, CT CSA | 2,665,618 | Putnam, CT μSA | 96,692 | Northeastern Connecticut Planning Region, Connecticut | 96,692 | none | none |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Kings County, New York | 2,561,225 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Queens County, New York | 2,252,196 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | New York County, New York | 1,597,451 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Bronx County, New York | 1,356,476 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Westchester County, New York | 990,817 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Bergen County, New Jersey | 957,736 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Hudson County, New Jersey | 705,472 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Passaic County, New Jersey | 513,395 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Richmond County, New York | 490,687 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Rockland County, New York | 340,807 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Putnam County, New York | 98,060 | New York-Jersey City-White Plains, NY-NJ MD | 11,864,322 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Suffolk County, New York | 1,523,170 | Nassau County-Suffolk County, NY MD | 2,904,885 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Nassau County, New York | 1,381,715 | Nassau County-Suffolk County, NY MD | 2,904,885 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Middlesex County, New Jersey | 863,623 | Lakewood-New Brunswick, NJ MD | 2,379,977 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Ocean County, New Jersey | 659,197 | Lakewood-New Brunswick, NJ MD | 2,379,977 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Monmouth County, New Jersey | 642,799 | Lakewood-New Brunswick, NJ MD | 2,379,977 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Somerset County, New Jersey | 348,842 | Lakewood-New Brunswick, NJ MD | 2,379,977 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Essex County, New Jersey | 851,117 | Newark, NJ MD | 2,167,829 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Union County, New Jersey | 572,726 | Newark, NJ MD | 2,167,829 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Morris County, New Jersey | 514,423 | Newark, NJ MD | 2,167,829 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Sussex County, New Jersey | 146,132 | Newark, NJ MD | 2,167,829 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | New York-Newark-Jersey City, NY-NJ MSA | 19,498,249 | Hunterdon County, New Jersey | 130,183 | Newark, NJ MD | 2,167,829 |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | Bridgeport-Stamford-Danbury, CT MSA | 951,558 | Western Connecticut Planning Region, Connecticut | 623,907 | none | none |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | Bridgeport-Stamford-Danbury, CT MSA | 951,558 | Greater Bridgeport Planning Region, Connecticut | 327,651 | none | none |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | Kiryas Joel-Poughkeepsie-Newburgh, NY MSA | 704,620 | Orange County, New York | 407,470 | none | none |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | Kiryas Joel-Poughkeepsie-Newburgh, NY MSA | 704,620 | Dutchess County, New York | 297,150 | none | none |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | Trenton-Princeton, NJ MSA | 381,671 | Mercer County, New Jersey | 381,671 | none | none |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | Kingston, NY MSA | 182,333 | Ulster County, New York | 182,333 | none | none |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | Monticello, NY μSA | 79,920 | Sullivan County, New York | 79,920 | none | none |
| New York-Newark, NY-NJ-CT-PA CSA | 21,859,598 951,558 (CT) | Hemlock Farms, PA μSA | 61,247 | Pike County, Pennsylvania | 61,247 | none | none |
| State of Connecticut | State of Connecticut | State of Connecticut | State of Connecticut | State of Connecticut | 3,617,176 | none | none |