RANKING · 2000 CENSUS · 33 SHOWN OF 33

Fastest shrinking, New Mexico counties · 2000

New Mexico counties with the steepest population decline since the prior decennial census. 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

YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Harding County, NMNM617-17.9%+0%

02Quay County, NMNM8,454-6.2%+0%

03De Baca County, NMNM1,647-0.5%+0%

04Lea County, NMNM74,749-0.5%+0%

05Hidalgo County, NMNM3,929-0.4%+0%

06Union County, NMNM3,844+1.2%+0%

07Los Alamos County, NMNM19,407+1.3%+0%

08Chaves County, NMNM63,364+6.1%+0%

09Eddy County, NMNM62,509+6.3%+0%

10Curry County, NMNM46,655+6.7%+0%

11Cibola County, NMNM26,807+7.6%+0%

12Roosevelt County, NMNM18,615+7.9%+0%

13Colfax County, NMNM12,184+9.8%+0%

14Grant County, NMNM27,252+12.0%+0%

15Guadalupe County, NMNM4,343+12.6%+0%

16Bernalillo County, NMNM667,601+15.8%+0%

17San Miguel County, NMNM26,260+17.0%+0%

18Rio Arriba County, NMNM39,832+19.9%+0%

19Otero County, NMNM70,368+20.0%+0%

20Mora County, NMNM4,051+21.5%+0%

21Socorro County, NMNM15,838+22.4%+0%

22McKinley County, NMNM68,119+23.3%+0%

23San Juan County, NMNM120,340+24.2%+0%

24Doña Ana County, NMNM229,091+28.9%+0%

25Taos County, NMNM34,564+29.7%+0%

26Santa Fe County, NMNM156,907+30.7%+0%

27Sierra County, NMNM11,395+33.9%+0%

28Luna County, NMNM25,407+38.1%+0%

29Catron County, NMNM3,827+38.2%+0%

30Sandoval County, NMNM159,565+42.0%+0%

31Valencia County, NMNM82,013+46.2%+0%

32Lincoln County, NMNM19,844+58.9%+0%

33Torrance County, NMNM16,100+64.4%+0%

SHOWING 1–33 OF 33

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