RANKING · 2020 CENSUS · 62 SHOWN OF 62

Youngest by median age, New York counties · 2020

New York counties with the youngest median age (2023 ACS). 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 ZIP codes

RELATEDOldest by median age Most foreign-born residents Highest uninsured rate Most women Most men Highest disability rate

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Tompkins County, NYNY104,04731.0+8%

02Jefferson County, NYNY111,54033.9+4%

03Rockland County, NYNY357,39735.0−3%

04Kings County, NYNY2,653,96335.2+6%

05Bronx County, NYNY1,406,33235.6+14%

06New York County, NYNY1,664,86236.9+3%

07Orange County, NYNY417,66937.1+7%

08St. Lawrence County, NYNY105,48838.8+10%

09Albany County, NYNY321,22539.0+6%

10Cortland County, NYNY45,85039.0+14%

11Queens County, NYNY2,358,18239.1+10%

12Allegany County, NYNY46,80039.2+12%

13Onondaga County, NYNY466,58439.2+8%

14Rensselaer County, NYNY160,51039.6+8%

15Monroe County, NYNY750,50639.7+10%

16Broome County, NYNY195,73640.0+5%

17Erie County, NYNY946,74140.0+5%

18Schenectady County, NYNY162,58140.1+4%

19Richmond County, NYNY501,29040.4+13%

20Oswego County, NYNY118,56940.6+16%

21Oneida County, NYNY226,39240.9+7%

22Yates County, NYNY24,54741.0+8%

23Westchester County, NYNY1,015,74341.1+9%

24Montgomery County, NYNY50,04641.3+4%

25Clinton County, NYNY78,13841.4+16%

26Madison County, NYNY67,12041.7+16%

27Franklin County, NYNY46,50041.9+15%

28Sullivan County, NYNY80,58641.9+8%

29Nassau County, NYNY1,398,93941.9+9%

30Suffolk County, NYNY1,546,09042.0+15%

31Chemung County, NYNY80,41542.2+11%

32Livingston County, NYNY61,43842.2+20%

33Otsego County, NYNY60,58942.3+14%

34Seneca County, NYNY32,88342.4+11%

35Cattaraugus County, NYNY75,39042.5+14%

36Lewis County, NYNY26,47942.6+16%

37Dutchess County, NYNY300,70842.7+16%

38Chautauqua County, NYNY124,12642.9+13%

39Orleans County, NYNY39,82542.9+19%

40Wyoming County, NYNY39,74143.2+18%

41Steuben County, NYNY91,85543.3+13%

42Saratoga County, NYNY241,34343.4+18%

43Genesee County, NYNY58,41643.5+16%

44Cayuga County, NYNY74,36543.7+17%

45Niagara County, NYNY208,91243.7+14%

46Wayne County, NYNY91,25044.1+20%

47Ontario County, NYNY113,13044.3+17%

48Tioga County, NYNY47,45344.3+17%

49Herkimer County, NYNY59,21944.4+14%

50Putnam County, NYNY99,02844.5+19%

51Washington County, NYNY59,35344.6+19%

52Ulster County, NYNY183,33044.6+17%

53Fulton County, NYNY52,21644.7+16%

54Chenango County, NYNY45,71545.5+18%

55Schoharie County, NYNY30,17645.7+20%

56Greene County, NYNY47,23846.6+19%

57Schuyler County, NYNY16,92447.0+21%

58Essex County, NYNY36,43847.5+21%

59Warren County, NYNY65,02047.5+22%

60Delaware County, NYNY44,30548.6+17%

61Columbia County, NYNY60,16848.8+20%

62Hamilton County, NYNY5,00657.0+26%

SHOWING 1–62 OF 62

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES