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.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

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

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

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

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

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

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

07Erie County, NYNY946,741-7,495−59%

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

28Essex County, NYNY36,438-943−156%

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

30Herkimer County, NYNY59,219-920−33%

31Madison County, NYNY67,120-896−379%

32Wyoming County, NYNY39,741-790−186%

33Warren County, NYNY65,020-717−118%

34Greene County, NYNY47,238-693−120%

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

36Orleans County, NYNY39,825-518−122%

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

38Yates County, NYNY24,547-227−113%

39Lewis County, NYNY26,479-103−170%

40Hamilton County, NYNY5,006-101−201%

41Wayne County, NYNY91,250-33−101%

42Delaware County, NYNY44,305-3−100%

43Genesee County, NYNY58,416+28−91%

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

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

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

47Ontario County, NYNY113,130+672−87%

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

49Putnam County, NYNY99,028+1,360−88%

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

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

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

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

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

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

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

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

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

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

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

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

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

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES