Counties in New York by population

Kings County had the highest population of 62 counties in 2020, at 2.72 million. Hamilton County had the lowest, at 5,073. The median was 87,427 and the figure for New York was 20.12 million. Source: the U.S. Census Bureau.

Highest2,722,259Kings County
Lowest5,073Hamilton County
Median87,42762 counties
New York20,122,262History

Top 40 counties, 2020

CSVChart (SVG)

Kings CountyKings County: 2,722,259 persons2,722,259Queens CountyQueens County: 2,385,541 persons2,385,541New York CountyNew York County: 1,687,033 persons1,687,033Suffolk CountySuffolk County: 1,521,964 persons1,521,964Bronx CountyBronx County: 1,461,233 persons1,461,233Nassau CountyNassau County: 1,390,952 persons1,390,952Westchester CountyWestchester County: 1,001,451 persons1,001,451Erie CountyErie County: 952,491 persons952,491Monroe CountyMonroe County: 758,384 persons758,384Richmond CountyRichmond County: 495,122 persons495,122Onondaga CountyOnondaga County: 475,429 persons475,429Orange CountyOrange County: 400,973 persons400,973Rockland CountyRockland County: 337,429 persons337,429Albany CountyAlbany County: 314,293 persons314,293Dutchess CountyDutchess County: 296,309 persons296,309Saratoga CountySaratoga County: 235,815 persons235,815Oneida CountyOneida County: 231,265 persons231,265Niagara CountyNiagara County: 212,118 persons212,118Broome CountyBroome County: 198,145 persons198,145Ulster CountyUlster County: 181,304 persons181,304Rensselaer CountyRensselaer County: 160,889 persons160,889Schenectady CountySchenectady County: 157,874 persons157,874Chautauqua CountyChautauqua County: 127,383 persons127,383Oswego CountyOswego County: 117,437 persons117,437Jefferson CountyJefferson County: 116,075 persons116,075Ontario CountyOntario County: 112,467 persons112,467St. Lawrence CountySt. Lawrence County: 108,182 persons108,182Tompkins CountyTompkins County: 105,508 persons105,508Putnam CountyPutnam County: 97,636 persons97,636Steuben CountySteuben County: 93,371 persons93,371Wayne CountyWayne County: 91,201 persons91,201Chemung CountyChemung County: 83,652 persons83,652Clinton CountyClinton County: 79,713 persons79,713Sullivan CountySullivan County: 78,461 persons78,461Cattaraugus CountyCattaraugus County: 76,977 persons76,977Cayuga CountyCayuga County: 76,107 persons76,107Madison CountyMadison County: 67,942 persons67,942Warren CountyWarren County: 65,597 persons65,597Livingston CountyLivingston County: 61,577 persons61,577Columbia CountyColumbia County: 61,468 persons61,468
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (PadrĂ³n). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Questions

Which county has the highest population?

Kings County, with 2.72 million in 2020, according to the U.S. Census Bureau.

Which county has the lowest population?

Hamilton County, with 5,073 in 2020.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved 2026-10-08.

Population: other rankings

Counties in New York: more rankings