RANKING · 2020 CENSUS · 62 SHOWN OF 62

Most population gained, New York counties · 2020

New York counties that added the most residents from the 2010 census to 2020, 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+231,374+41%

02Queens County, NYNY2,358,182+174,742−37%

03New York County, NYNY1,664,862+108,378+118%

04Bronx County, NYNY1,406,332+87,546−32%

05Nassau County, NYNY1,398,939+56,242+19%

06Westchester County, NYNY1,015,743+55,344+14%

07Erie County, NYNY946,741+35,196−293%

08Suffolk County, NYNY1,546,090+32,570−67%

09Orange County, NYNY417,669+28,497−15%

10Richmond County, NYNY501,290+27,017−58%

11Rockland County, NYNY357,397+26,642+25%

12Saratoga County, NYNY241,343+15,902−18%

13Monroe County, NYNY750,506+15,099−29%

14Albany County, NYNY321,225+10,644+440%

15Onondaga County, NYNY466,584+9,490−189%

16Ontario County, NYNY113,130+4,527−12%

17Tompkins County, NYNY104,047+4,176+74%

18Schenectady County, NYNY162,581+3,334−222%

19Rensselaer County, NYNY160,510+1,701−190%

20Sullivan County, NYNY80,586+1,077−77%

21Jefferson County, NYNY111,540+492−38%

22Hamilton County, NYNY5,006+271+171%

23Warren County, NYNY65,020+30−99%

24Schuyler County, NYNY16,924-445−179%

25Lewis County, NYNY26,479-505−441%

26Yates County, NYNY24,547-574−132%

27Ulster County, NYNY183,330-642−105%

28Montgomery County, NYNY50,046-687−70%

29Greene County, NYNY47,238-1,290−137%

30Seneca County, NYNY32,883-1,437+321%

31Columbia County, NYNY60,168-1,526−1463%

32Dutchess County, NYNY300,708-1,577−108%

33Wyoming County, NYNY39,741-1,624−277%

34Genesee County, NYNY58,416-1,691−645%

35Washington County, NYNY59,353-1,914−212%

36Broome County, NYNY195,736-1,917−84%

37Essex County, NYNY36,438-1,989−217%

38Putnam County, NYNY99,028-2,042−117%

39Fulton County, NYNY52,216-2,207−350%

40Clinton County, NYNY78,138-2,285−62%

41Wayne County, NYNY91,250-2,489−154%

42Allegany County, NYNY46,800-2,490+359%

43Cortland County, NYNY45,850-2,527+594%

44Orleans County, NYNY39,825-2,540−209%

45Tioga County, NYNY47,453-2,670+383%

46Oneida County, NYNY226,392-2,753−82%

47Schoharie County, NYNY30,176-3,035+996%

48Chenango County, NYNY45,715-3,257+787%

49Cattaraugus County, NYNY75,390-3,275+1074%

50St. Lawrence County, NYNY105,488-3,439+7898%

51Livingston County, NYNY61,438-3,559−282%

52Delaware County, NYNY44,305-3,672−542%

53Otsego County, NYNY60,589-3,735−422%

54Cayuga County, NYNY74,365-3,778+979%

55Niagara County, NYNY208,912-3,803+318%

56Franklin County, NYNY46,500-4,044−188%

57Herkimer County, NYNY59,219-4,380+220%

58Oswego County, NYNY118,569-4,584−856%

59Chemung County, NYNY80,415-4,682+14%

60Steuben County, NYNY91,855-5,406+1393%

61Madison County, NYNY67,120-5,426−1790%

62Chautauqua County, NYNY124,126-7,248+238%

SHOWING 1–62 OF 62

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