RANKING · 2024 ACS · 33 SHOWN OF 33

Oldest housing stock, New Mexico counties

New Mexico counties ranked by oldest median year of construction (2024 ACS). This list covers the 33 counties in New Mexico that qualify, ranked against each other statewide. The median across all 33 is 1980. Biggest climber in the top 100 since 2020: Hidalgo County, NM, up 6 places to #8.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDMost expensive homes Cheapest homes Highest median rent Lowest median rent Highest homeownership rate Highest renter share

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 1990

01Harding County, NMNM6171960+1%

02▲1Union County, NMNM3,84419610%

03▲1Quay County, NMNM8,45419660%

04▲1Chaves County, NMNM63,36419720%

05▲4Los Alamos County, NMNM19,4071974+1%

06▲5Curry County, NMNM46,6551976+1%

07▼1Guadalupe County, NMNM4,3431976+1%

08▲6Hidalgo County, NMNM3,92919760%

09▲6Colfax County, NMNM12,1841977+1%

10▼8De Baca County, NMNM1,6471977+1%

11▲2Roosevelt County, NMNM18,6151977+1%

12▼2Cibola County, NMNM26,80719780%

13▼1Grant County, NMNM27,25219780%

14▼7Lea County, NMNM74,7491979+1%

15▲4San Miguel County, NMNM26,2601979+1%

16▼8Eddy County, NMNM62,5091980+1%

17▼1Luna County, NMNM25,40719800%

18▲4Socorro County, NMNM15,83819800%

19▲2Bernalillo County, NMNM667,6011982+1%

20▼3Mora County, NMNM4,0511983+1%

21▼1Sierra County, NMNM11,3951983+1%

22▲2Otero County, NMNM70,3681984+1%

23▼5Rio Arriba County, NMNM39,8321984+1%

24▼1Lincoln County, NMNM19,8441985+1%

25McKinley County, NMNM68,1191985+1%

26Taos County, NMNM34,5641985+1%

27Catron County, NMNM3,8271986+1%

28San Juan County, NMNM120,3401986+1%

29Torrance County, NMNM16,1001987+1%

30▲1Santa Fe County, NMNM156,9071989+1%

31▲1Valencia County, NMNM82,0131989+1%

32▼2Doña Ana County, NMNM229,0911991+1%

33Sandoval County, NMNM159,5651997+1%

SHOWING 1–33 OF 33

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES