RANKING · 2010 CENSUS · 62 SHOWN OF 62

Most population gained, New York counties · 2010

New York counties that added the most residents from the 2000 census to 2010, 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

01Suffolk County, NYNY1,546,090+73,981−24%

02Bronx County, NYNY1,406,332+52,458−59%

03New York County, NYNY1,664,862+48,678−2%

04Kings County, NYNY2,653,963+39,374−76%

05Orange County, NYNY417,669+31,446−7%

06Westchester County, NYNY1,015,743+25,654−47%

07Richmond County, NYNY501,290+25,002−61%

08Rockland County, NYNY357,397+24,934+17%

09Saratoga County, NYNY241,343+18,972−2%

10Dutchess County, NYNY300,708+17,338−16%

11Albany County, NYNY321,225+9,639+389%

12Monroe County, NYNY750,506+9,001−58%

13Onondaga County, NYNY466,584+8,690−182%

14Schenectady County, NYNY162,581+8,172−399%

15Ontario County, NYNY113,130+7,707+50%

16Rensselaer County, NYNY160,510+6,891−464%

17Tompkins County, NYNY104,047+5,063+111%

18Nassau County, NYNY1,398,939+4,988−89%

19Ulster County, NYNY183,330+4,744−62%

20Jefferson County, NYNY111,540+4,491+465%

21Madison County, NYNY67,120+4,001+1146%

22Putnam County, NYNY99,028+3,965−66%

23Sullivan County, NYNY80,586+3,581−24%

24Warren County, NYNY65,020+2,404−41%

25Clinton County, NYNY78,138+2,234−137%

26Washington County, NYNY59,353+2,174+27%

27Seneca County, NYNY32,883+1,909−660%

28Queens County, NYNY2,358,182+1,343−100%

29Schoharie County, NYNY30,176+1,167−521%

30Livingston County, NYNY61,438+1,065−46%

31Greene County, NYNY47,238+1,026−70%

32Cortland County, NYNY45,850+737−302%

33Yates County, NYNY24,547+727−60%

34Otsego County, NYNY60,589+583−50%

35Essex County, NYNY36,438+519−69%

36Montgomery County, NYNY50,046+511−122%

37Franklin County, NYNY46,500+465−90%

38Fulton County, NYNY52,216+458−48%

39Steuben County, NYNY91,855+264−173%

40Lewis County, NYNY26,479+143−3%

41Herkimer County, NYNY59,219+92−107%

42Broome County, NYNY195,736+64−101%

43St. Lawrence County, NYNY105,488+13−130%

44Wayne County, NYNY91,250+7−100%

45Columbia County, NYNY60,168+2−98%

46Delaware County, NYNY44,305-75−109%

47Oswego County, NYNY118,569-268−144%

48Genesee County, NYNY58,416-291−194%

49Hamilton County, NYNY5,006-543−643%

50Oneida County, NYNY226,392-591−96%

51Tioga County, NYNY47,453-659+19%

52Schuyler County, NYNY16,924-881−257%

53Chenango County, NYNY45,715-924+152%

54Allegany County, NYNY46,800-981+81%

55Wyoming County, NYNY39,741-1,269−238%

56Orleans County, NYNY39,825-1,288−155%

57Cayuga County, NYNY74,365-1,937+453%

58Chemung County, NYNY80,415-2,240−46%

59Niagara County, NYNY208,912-3,377+271%

60Cattaraugus County, NYNY75,390-3,638+1204%

61Chautauqua County, NYNY124,126-4,845+126%

62Erie County, NYNY946,741-31,225+71%

SHOWING 1–62 OF 62

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