RANKING · 2000 CENSUS · 33 SHOWN OF 33

Fastest growing, New Mexico counties · 2000

New Mexico counties ranked by population growth from the 1990 census to 2000. 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

RELATEDLargest by population Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS –

01Torrance County, NMNM16,100+64.4%–

02Lincoln County, NMNM19,844+58.9%–

03Valencia County, NMNM82,013+46.2%–

04Sandoval County, NMNM159,565+42.0%–

05Catron County, NMNM3,827+38.2%–

06Luna County, NMNM25,407+38.1%–

07Sierra County, NMNM11,395+33.9%–

08Santa Fe County, NMNM156,907+30.7%–

09Taos County, NMNM34,564+29.7%–

10Doña Ana County, NMNM229,091+28.9%–

11San Juan County, NMNM120,340+24.2%–

12McKinley County, NMNM68,119+23.3%–

13Socorro County, NMNM15,838+22.4%–

14Mora County, NMNM4,051+21.5%–

15Otero County, NMNM70,368+20.0%–

16Rio Arriba County, NMNM39,832+19.9%–

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

18Bernalillo County, NMNM667,601+15.8%–

19Guadalupe County, NMNM4,343+12.6%–

20Grant County, NMNM27,252+12.0%–

21Colfax County, NMNM12,184+9.8%–

22Roosevelt County, NMNM18,615+7.9%–

23Cibola County, NMNM26,807+7.6%–

24Curry County, NMNM46,655+6.7%–

25Eddy County, NMNM62,509+6.3%–

26Chaves County, NMNM63,364+6.1%–

27Los Alamos County, NMNM19,407+1.3%–

28Union County, NMNM3,844+1.2%–

29Hidalgo County, NMNM3,929-0.4%–

30Lea County, NMNM74,749-0.5%–

31De Baca County, NMNM1,647-0.5%–

32Quay County, NMNM8,454-6.2%–

33Harding County, NMNM617-17.9%–

SHOWING 1–33 OF 33

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS