RANKING · 2010 CENSUS · 62 SHOWN OF 62

Fastest shrinking, New York counties · 2010

New York counties with the steepest population decline from the 2000 census to 2010. 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 growing Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Hamilton County, NYNY5,006-10.1%−12.0 pts

02Schuyler County, NYNY16,924-4.6%−7.6 pts

03Cattaraugus County, NYNY75,390-4.3%−4.0 pts

04Chautauqua County, NYNY124,126-3.5%−2.0 pts

05Erie County, NYNY946,741-3.3%−1.4 pts

06Wyoming County, NYNY39,741-2.9%−5.1 pts

07Orleans County, NYNY39,825-2.9%−8.5 pts

08Chemung County, NYNY80,415-2.5%+1.9 pts

09Cayuga County, NYNY74,365-2.4%−1.9 pts

10Allegany County, NYNY46,800-2.0%−0.9 pts

11Chenango County, NYNY45,715-1.8%−1.1 pts

12Niagara County, NYNY208,912-1.5%−1.1 pts

13Tioga County, NYNY47,453-1.3%−0.2 pts

14Genesee County, NYNY58,416-0.5%−1.0 pts

15Oneida County, NYNY226,392-0.3%+5.9 pts

16Oswego County, NYNY118,569-0.2%−0.7 pts

17Delaware County, NYNY44,305-0.2%−1.9 pts

18Columbia County, NYNY60,168+0.0%−0.2 pts

19Wayne County, NYNY91,250+0.0%−5.2 pts

20St. Lawrence County, NYNY105,488+0.0%+0.1 pts

21Broome County, NYNY195,736+0.0%+5.5 pts

22Queens County, NYNY2,358,182+0.1%−14.2 pts

23Herkimer County, NYNY59,219+0.1%+2.2 pts

24Steuben County, NYNY91,855+0.3%+0.6 pts

25Nassau County, NYNY1,398,939+0.4%−3.3 pts

26Lewis County, NYNY26,479+0.5%−0.0 pts

27Fulton County, NYNY52,216+0.8%−0.8 pts

28Franklin County, NYNY46,500+0.9%−9.0 pts

29Otsego County, NYNY60,589+0.9%−1.0 pts

30Montgomery County, NYNY50,046+1.0%+5.4 pts

31Monroe County, NYNY750,506+1.2%−1.8 pts

32Essex County, NYNY36,438+1.3%−3.2 pts

33Cortland County, NYNY45,850+1.5%+2.3 pts

34Kings County, NYNY2,653,963+1.6%−5.6 pts

35Livingston County, NYNY61,438+1.7%−1.5 pts

36Onondaga County, NYNY466,584+1.9%+4.2 pts

37Greene County, NYNY47,238+2.1%−5.6 pts

38Ulster County, NYNY183,330+2.7%−4.9 pts

39Westchester County, NYNY1,015,743+2.8%−2.8 pts

40Clinton County, NYNY78,138+2.8%+9.9 pts

41Yates County, NYNY24,547+3.0%−5.0 pts

42New York County, NYNY1,664,862+3.2%−0.2 pts

43Albany County, NYNY321,225+3.3%+2.6 pts

44Washington County, NYNY59,353+3.6%+0.7 pts

45Schoharie County, NYNY30,176+3.7%+4.6 pts

46Warren County, NYNY65,020+3.8%−3.1 pts

47Bronx County, NYNY1,406,332+3.9%−6.8 pts

48Jefferson County, NYNY111,540+4.0%+3.3 pts

49Putnam County, NYNY99,028+4.1%−9.9 pts

50Rensselaer County, NYNY160,510+4.5%+5.7 pts

51Sullivan County, NYNY80,586+4.8%−1.9 pts

52Suffolk County, NYNY1,546,090+5.2%−2.2 pts

53Tompkins County, NYNY104,047+5.2%+2.7 pts

54Schenectady County, NYNY162,581+5.6%+7.4 pts

55Richmond County, NYNY501,290+5.6%−11.5 pts

56Seneca County, NYNY32,883+5.7%+6.7 pts

57Madison County, NYNY67,120+5.8%+5.3 pts

58Dutchess County, NYNY300,708+6.2%−1.8 pts

59Ontario County, NYNY113,130+7.7%+2.3 pts

60Rockland County, NYNY357,397+8.7%+0.7 pts

61Orange County, NYNY417,669+9.2%−1.7 pts

62Saratoga County, NYNY241,343+9.5%−1.2 pts

SHOWING 1–62 OF 62

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS