RANKING · 2020 CENSUS · 62 SHOWN OF 62

Fastest growing, New York counties · 2020

New York counties ranked by population growth from the 2010 census to 2020. This list covers the 62 counties in New York that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Kings County, NYNY2,653,963+9.2%+29%

02Rockland County, NYNY357,397+8.5%+7%

03Queens County, NYNY2,358,182+7.8%−45%

04Orange County, NYNY417,669+7.6%−30%

05Saratoga County, NYNY241,343+7.2%−32%

06New York County, NYNY1,664,862+6.8%+105%

07Bronx County, NYNY1,406,332+6.3%−41%

08Westchester County, NYNY1,015,743+5.8%+5%

09Richmond County, NYNY501,290+5.8%−66%

10Hamilton County, NYNY5,006+5.6%+196%

11Nassau County, NYNY1,398,939+4.2%+15%

12Ontario County, NYNY113,130+4.2%−22%

13Tompkins County, NYNY104,047+4.1%+61%

14Erie County, NYNY946,741+3.8%−303%

15Albany County, NYNY321,225+3.5%+419%

16Suffolk County, NYNY1,546,090+2.2%−70%

17Schenectady County, NYNY162,581+2.2%−218%

18Onondaga County, NYNY466,584+2.0%−190%

19Monroe County, NYNY750,506+2.0%−32%

20Sullivan County, NYNY80,586+1.4%−79%

21Rensselaer County, NYNY160,510+1.1%−187%

22Jefferson County, NYNY111,540+0.4%−41%

23Warren County, NYNY65,020+0.0%−99%

24Ulster County, NYNY183,330-0.4%−105%

25Dutchess County, NYNY300,708-0.5%−107%

26Broome County, NYNY195,736-1.0%−83%

27Oneida County, NYNY226,392-1.2%−81%

28Montgomery County, NYNY50,046-1.4%−69%

29Niagara County, NYNY208,912-1.8%+326%

30Lewis County, NYNY26,479-1.9%−438%

31Putnam County, NYNY99,028-2.0%−115%

32Yates County, NYNY24,547-2.3%−129%

33Columbia County, NYNY60,168-2.4%−1460%

34Schuyler County, NYNY16,924-2.4%−181%

35Greene County, NYNY47,238-2.6%−134%

36Wayne County, NYNY91,250-2.7%−151%

37Clinton County, NYNY78,138-2.8%−61%

38Genesee County, NYNY58,416-2.8%−645%

39Washington County, NYNY59,353-3.0%−205%

40St. Lawrence County, NYNY105,488-3.1%+7900%

41Oswego County, NYNY118,569-3.8%−854%

42Wyoming County, NYNY39,741-3.9%−279%

43Fulton County, NYNY52,216-4.0%−344%

44Seneca County, NYNY32,883-4.1%+303%

45Cattaraugus County, NYNY75,390-4.1%+1131%

46Cayuga County, NYNY74,365-4.7%+1010%

47Essex County, NYNY36,438-5.1%−210%

48Allegany County, NYNY46,800-5.1%+373%

49Cortland County, NYNY45,850-5.1%+589%

50Tioga County, NYNY47,453-5.2%+394%

51Chemung County, NYNY80,415-5.3%+22%

52Chautauqua County, NYNY124,126-5.4%+255%

53Livingston County, NYNY61,438-5.4%−274%

54Steuben County, NYNY91,855-5.5%+1395%

55Orleans County, NYNY39,825-5.9%−207%

56Otsego County, NYNY60,589-6.0%−413%

57Chenango County, NYNY45,715-6.5%+810%

58Herkimer County, NYNY59,219-6.8%+226%

59Madison County, NYNY67,120-7.4%−1691%

60Delaware County, NYNY44,305-7.7%−535%

61Franklin County, NYNY46,500-7.8%−179%

62Schoharie County, NYNY30,176-9.3%+966%

SHOWING 1–62 OF 62

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS