This is less than a one percent fall in Westchester County’s population, from 1,003,245 in 2020 to 997,895 in 2021.
Westchester County had the seventh largest population in New York in 2021.
The US Census Bureau found more than 73 percent of counties in the US saw a natural decrease in population in 2021. This is up from a 55.5 percent increase in 2020.
The Midwest suffered the most sustained population decreases, with many counties along the US East Coast and through the Rocky Mountains seeing increases.
The US population continues to grow, though at a slower rate than before.
New York Counties By Population Change from 2020 to 2021
| County | 2020 Estimated Population | 2021 Estimated Population | % Change in Population From Year to Year |
|---|---|---|---|
| Sullivan County | 78,643 | 79,806 | 1.5% |
| Greene County | 47,890 | 48,499 | 1.3% |
| Hamilton County | 5,078 | 5,119 | 0.8% |
| Orange County | 401,322 | 404,525 | 0.8% |
| Saratoga County | 235,689 | 237,359 | 0.7% |
| Ulster County | 181,687 | 182,951 | 0.7% |
| Schoharie County | 29,720 | 29,863 | 0.5% |
| Dutchess County | 295,742 | 297,112 | 0.5% |
| Delaware County | 44,186 | 44,378 | 0.4% |
| Columbia County | 61,550 | 61,778 | 0.4% |
| Rockland County | 338,121 | 339,227 | 0.3% |
| Putnam County | 97,660 | 97,936 | 0.3% |
| Montgomery County | 49,433 | 49,558 | 0.3% |
| Wyoming County | 40,401 | 40,491 | 0.2% |
| Suffolk County | 1,524,099 | 1,526,344 | 0.1% |
| Schenectady County | 157,861 | 158,089 | 0.1% |
| Jefferson County | 116,134 | 116,295 | 0.1% |
| Lewis County | 26,538 | 26,573 | 0.1% |
| Oswego County | 117,351 | 117,387 | 0% |
| Ontario County | 112,475 | 112,508 | 0% |
| Warren County | 65,638 | 65,618 | 0% |
| Seneca County | 33,715 | 33,688 | -0.1% |
| Fulton County | 53,160 | 53,116 | -0.1% |
| Orleans County | 40,236 | 40,191 | -0.1% |
| Herkimer County | 60,007 | 59,937 | -0.1% |
| Clinton County | 79,715 | 79,596 | -0.1% |
| Franklin County | 47,527 | 47,456 | -0.1% |
| Essex County | 37,336 | 37,268 | -0.2% |
| Livingston County | 61,699 | 61,578 | -0.2% |
| Wayne County | 91,103 | 90,923 | -0.2% |
| Albany County | 314,368 | 313,743 | -0.2% |
| Nassau County | 1,393,978 | 1,390,907 | -0.2% |
| Tompkins County | 105,404 | 105,162 | -0.2% |
| St. Lawrence County | 108,311 | 108,051 | -0.2% |
| Erie County | 953,254 | 950,683 | -0.3% |
| Niagara County | 212,252 | 211,653 | -0.3% |
| Cayuga County | 76,095 | 75,880 | -0.3% |
| Washington County | 61,143 | 60,956 | -0.3% |
| Madison County | 67,890 | 67,658 | -0.3% |
| Yates County | 24,709 | 24,613 | -0.4% |
| Otsego County | 58,351 | 58,123 | -0.4% |
| Richmond County | 495,522 | 493,494 | -0.4% |
| Rensselaer County | 160,923 | 160,232 | -0.4% |
| Steuben County | 93,363 | 92,948 | -0.4% |
| Monroe County | 758,554 | 755,160 | -0.4% |
| Broome County | 198,199 | 197,240 | -0.5% |
| Chautauqua County | 127,424 | 126,807 | -0.5% |
| Onondaga County | 475,653 | 473,236 | -0.5% |
| Westchester County | 1,003,245 | 997,895 | -0.5% |
| Allegany County | 46,373 | 46,106 | -0.6% |
| Schuyler County | 17,857 | 17,752 | -0.6% |
| Oneida County | 231,695 | 230,274 | -0.6% |
| Cattaraugus County | 76,907 | 76,426 | -0.6% |
| Genesee County | 58,258 | 57,853 | -0.7% |
| Tioga County | 48,355 | 47,980 | -0.8% |
| Cortland County | 46,723 | 46,311 | -0.9% |
| Chemung County | 83,882 | 83,045 | -1% |
| Chenango County | 47,073 | 46,537 | -1.1% |
| Queens County | 2,395,791 | 2,331,143 | -2.7% |
| Bronx County | 1,466,438 | 1,424,948 | -2.8% |
| Kings County | 2,727,393 | 2,641,052 | -3.2% |
| New York County | 1,687,834 | 1,576,876 | -6.6% |
ORGANIZATIONS IN THIS STORY
Ossining Village• Shenorock• Mount Kisco Village• Hawthorne• Village of Buchanan• Hartsdale• Village of Port Chester• City of White Plains• Village of Scarsdale• City of New Rochelle• Village of Ardsley• Crompond• Village of Sleepy Hollow• City of Peekskill• City of Mount Vernon• Pound Ridge• Tarrytown• Pelham Village• Lake Mohegan• Lincolndale• Armonk• Eastchester• Montrose• Cortlandt• Croton-On-Hudson• Heritage Hills• North Salem• Greenburgh• Hastings-On-Hudson• Katonah• Town of Mamaroneck• Verplanck• City of Rye• Village of Mamaroneck• Village of Elmsford• Bedford Hills• Bedford• Village of Bronxville• Village of Pelham Manor• Valhalla• Village of Pleasantville• Golden's Bridge• Shrub Oak• Yorktown• Harrison Village• Chappaqua• Lewisboro• Village of Rye Brook• Village Of Larchmont• Town Of Mount Pleasant• Village Of Irvington• Village Of Briarcliff Manor• Crugers• North Castle• Village Of Dobbs Ferry• Jefferson Valley-Yorktown• Thornwood• Yorktown Heights• Scotts Corners• City Of Yonkers
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