RANKING · 2025 ESTIMATES · 62 SHOWN OF 62

Most population lost, New York counties

New York counties that lost the most residents from the 2020 census to 2025, by raw count of people rather than percentage. This list covers the 62 counties in New York that qualify, ranked against each other statewide. The median across all 62 is -790. Biggest climber in the top 100 since 2020: Kings County, NY, up 61 places to #1.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01▲61Kings County, NYNY2,653,963-82,111−150%

02▲57Bronx County, NYNY1,406,332-66,322−151%

03▲58Queens County, NYNY2,358,182-47,282−117%

04▲56New York County, NYNY1,664,862-29,389−159%

05▲43Onondaga County, NYNY466,584-9,932−7%

06▲44Monroe County, NYNY750,506-8,937−142%

07▲49Erie County, NYNY946,741-7,495−59%

08▲9Oneida County, NYNY226,392-5,733−63%

09▲33Jefferson County, NYNY111,540-5,181−752%

10▼2Niagara County, NYNY208,912-3,754+313%

11▼7Chemung County, NYNY80,415-3,733−10%

12▼11Chautauqua County, NYNY124,126-3,531+65%

13St. Lawrence County, NYNY105,488-3,017+6916%

14▲13Broome County, NYNY195,736-2,947−75%

15▲13Washington County, NYNY59,353-1,949−214%

16▼7Cayuga County, NYNY74,365-1,883+438%

17▼14Steuben County, NYNY91,855-1,729+378%

18▲5Clinton County, NYNY78,138-1,705−72%

19▲27Tompkins County, NYNY104,047-1,693−170%

20▼6Cattaraugus County, NYNY75,390-1,652+492%

21▼6Chenango County, NYNY45,715-1,505+310%

22▲10Columbia County, NYNY60,168-1,402−1352%

23▲1Fulton County, NYNY52,216-1,108−226%

24▼17Franklin County, NYNY46,500-1,055−123%

25▼7Tioga County, NYNY47,453-1,002+81%

26▲13Schuyler County, NYNY16,924-974−273%

27▼7Cortland County, NYNY45,850-959+163%

28▼2Essex County, NYNY36,438-943−156%

29▲4Seneca County, NYNY32,883-931+173%

30▼24Herkimer County, NYNY59,219-920−33%

31▼29Madison County, NYNY67,120-896−379%

32▼2Wyoming County, NYNY39,741-790−186%

33▲7Warren County, NYNY65,020-717−118%

34Greene County, NYNY47,238-693−120%

35▲9Rensselaer County, NYNY160,510-620−67%

36▼17Orleans County, NYNY39,825-518−122%

37▼25Livingston County, NYNY61,438-396−120%

38▼1Yates County, NYNY24,547-227−113%

39▼1Lewis County, NYNY26,479-103−170%

40▲1Hamilton County, NYNY5,006-101−201%

41▼19Wayne County, NYNY91,250-33−101%

42▼31Delaware County, NYNY44,305-3−100%

43▼14Genesee County, NYNY58,416+28−91%

44▼23Allegany County, NYNY46,800+344−163%

45▼29Schoharie County, NYNY30,176+462−267%

46▼11Montgomery County, NYNY50,046+514−123%

47Ontario County, NYNY113,130+672−87%

48▼43Oswego County, NYNY118,569+1,044+72%

49▼24Putnam County, NYNY99,028+1,360−88%

50▼14Ulster County, NYNY183,330+1,479−88%

51▼8Sullivan County, NYNY80,586+1,962−58%

52▼42Otsego County, NYNY60,589+2,065+78%

53▲5Nassau County, NYNY1,398,939+3,165−93%

54▼9Schenectady County, NYNY162,581+4,520−266%

55▼24Dutchess County, NYNY300,708+4,797−77%

56▼3Richmond County, NYNY501,290+5,543−91%

57▼6Saratoga County, NYNY241,343+5,834−70%

58▼9Albany County, NYNY321,225+6,377+224%

59▼2Westchester County, NYNY1,015,743+11,286−77%

60▼6Orange County, NYNY417,669+16,359−51%

61▼9Rockland County, NYNY357,397+19,068−10%

62▼7Suffolk County, NYNY1,546,090+20,170−79%

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES