RANKING · 1990 CENSUS · 33 SHOWN OF 33

Least racially diverse, New Mexico counties · 1990

New Mexico counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (1990 ACS). This list covers the 33 counties in New Mexico that qualify, ranked against each other statewide. The median across all 33 is 61.

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New MexicoAll states All rankings

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

RANKPLACESTATEPOPDIVERSITY SCOREVS –

01Los Alamos County, NMNM19,40731–

02Guadalupe County, NMNM4,34332–

03Mora County, NMNM4,05132–

04San Miguel County, NMNM26,26041–

05Sierra County, NMNM11,39548–

06Catron County, NMNM3,82751–

07Lincoln County, NMNM19,84453–

08Roosevelt County, NMNM18,61554–

09Rio Arriba County, NMNM39,83255–

10Union County, NMNM3,84457–

11McKinley County, NMNM68,11958–

12De Baca County, NMNM1,64758–

13Eddy County, NMNM62,50961–

14Curry County, NMNM46,65561–

15Lea County, NMNM74,74961–

16Taos County, NMNM34,56461–

17Torrance County, NMNM16,10061–

18Quay County, NMNM8,45462–

19Chaves County, NMNM63,36463–

20Hidalgo County, NMNM3,92964–

21Harding County, NMNM61764–

22Grant County, NMNM27,25265–

23Doña Ana County, NMNM229,09165–

24Colfax County, NMNM12,18465–

25Otero County, NMNM70,36866–

26Luna County, NMNM25,40766–

27Santa Fe County, NMNM156,90767–

28Valencia County, NMNM82,01368–

29Bernalillo County, NMNM667,60169–

30Socorro County, NMNM15,83875–

31San Juan County, NMNM120,34075–

32Sandoval County, NMNM159,56578–

33Cibola County, NMNM26,80784–

SHOWING 1–33 OF 33

Download CSV (full list, 33 rows)How this score is calculated

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