RANKING · 2020 CENSUS · 62 SHOWN OF 62

Youngest by median age, New York counties · 2020

New York counties with the youngest median age (2020 ACS). This list covers the 62 counties in New York that qualify, ranked against each other statewide. The median across all 62 is 42.2.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

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 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS