RANKING · 2010 CENSUS · 33 SHOWN OF 33

Youngest by median age, New Mexico counties · 2010

New Mexico counties with the youngest median age (2023 ACS). This list covers the 33 counties in New Mexico 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

01Roosevelt County, NMNM18,61529.7+1%

02McKinley County, NMNM68,11930.7+14%

03Curry County, NMNM46,65531.5+2%

04Lea County, NMNM74,74931.9−4%

05Doña Ana County, NMNM229,09132.4+7%

06San Juan County, NMNM120,34033.0+6%

07Chaves County, NMNM63,36434.7−1%

08Bernalillo County, NMNM667,60135.8+2%

09Otero County, NMNM70,36836.5+8%

10Cibola County, NMNM26,80736.6+11%

11Socorro County, NMNM15,83836.9+14%

12Eddy County, NMNM62,50937.3+2%

13Valencia County, NMNM82,01337.7+12%

14Sandoval County, NMNM159,56537.9+8%

15Rio Arriba County, NMNM39,83239.0+13%

16Luna County, NMNM25,40739.5+8%

17Guadalupe County, NMNM4,34340.1+7%

18San Miguel County, NMNM26,26040.7+16%

19Hidalgo County, NMNM3,92940.9+18%

20Union County, NMNM3,84440.9+3%

21Torrance County, NMNM16,10041.6+20%

22Santa Fe County, NMNM156,90743.0+13%

23Los Alamos County, NMNM19,40744.3+9%

24Taos County, NMNM34,56445.2+14%

25Quay County, NMNM8,45445.6+10%

26Grant County, NMNM27,25245.9+18%

27Mora County, NMNM4,05146.0+16%

28Colfax County, NMNM12,18446.7+14%

29De Baca County, NMNM1,64747.8+9%

30Lincoln County, NMNM19,84449.4+13%

31Sierra County, NMNM11,39554.5+11%

32Catron County, NMNM3,82755.8+17%

33Harding County, NMNM61755.9+15%

SHOWING 1–33 OF 33

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