RANKING · 1990 CENSUS · 62 SHOWN OF 62

Youngest by median age, New York counties · 1990

New York counties with the youngest median age (1990 ACS). This list covers the 62 counties in New York that qualify, ranked against each other statewide. The median across all 62 is 33.7.

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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 –

01Tompkins County, NYNY104,04727.3–

02Jefferson County, NYNY111,54029.3–

03Clinton County, NYNY78,13830.0–

04Cortland County, NYNY45,85030.4–

05Oswego County, NYNY118,56930.6–

06St. Lawrence County, NYNY105,48830.7–

07Bronx County, NYNY1,406,33231.1–

08Allegany County, NYNY46,80031.3–

09Livingston County, NYNY61,43831.4–

10Madison County, NYNY67,12031.4–

11Lewis County, NYNY26,47931.4–

12Orange County, NYNY417,66932.0–

13Wyoming County, NYNY39,74132.4–

14Orleans County, NYNY39,82532.6–

15Kings County, NYNY2,653,96332.6–

16Franklin County, NYNY46,50032.7–

17Onondaga County, NYNY466,58432.8–

18Saratoga County, NYNY241,34332.8–

19Wayne County, NYNY91,25032.8–

20Rensselaer County, NYNY160,51033.0–

21Monroe County, NYNY750,50633.0–

22Tioga County, NYNY47,45333.1–

23Washington County, NYNY59,35333.1–

24Cayuga County, NYNY74,36533.2–

25Cattaraugus County, NYNY75,39033.2–

26Otsego County, NYNY60,58933.3–

27Genesee County, NYNY58,41633.3–

28Richmond County, NYNY501,29033.4–

29Dutchess County, NYNY300,70833.5–

30Suffolk County, NYNY1,546,09033.5–

31Schoharie County, NYNY30,17633.5–

32Putnam County, NYNY99,02833.7–

33Oneida County, NYNY226,39233.8–

34Chenango County, NYNY45,71533.8–

35Albany County, NYNY321,22534.0–

36Ontario County, NYNY113,13034.1–

37Rockland County, NYNY357,39734.1–

38Broome County, NYNY195,73634.1–

39Chautauqua County, NYNY124,12634.3–

40Chemung County, NYNY80,41534.3–

41Ulster County, NYNY183,33034.4–

42Warren County, NYNY65,02034.4–

43Steuben County, NYNY91,85534.5–

44Niagara County, NYNY208,91234.6–

45Seneca County, NYNY32,88334.7–

46Erie County, NYNY946,74134.7–

47Schuyler County, NYNY16,92434.7–

48Yates County, NYNY24,54734.8–

49Essex County, NYNY36,43835.1–

50Sullivan County, NYNY80,58635.2–

51Fulton County, NYNY52,21635.2–

52Herkimer County, NYNY59,21935.3–

53Queens County, NYNY2,358,18235.4–

54Greene County, NYNY47,23835.5–

55Schenectady County, NYNY162,58135.6–

56Delaware County, NYNY44,30535.8–

57New York County, NYNY1,664,86236.0–

58Westchester County, NYNY1,015,74336.4–

59Columbia County, NYNY60,16836.5–

60Montgomery County, NYNY50,04636.6–

61Nassau County, NYNY1,398,93936.7–

62Hamilton County, NYNY5,00639.7–

SHOWING 1–62 OF 62

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