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RANKING · 2025 ESTIMATES · 33 SHOWN OF 33

Fastest growing, New Mexico counties

New Mexico counties ranked by population growth from the 2020 census to 2025. This list covers the 33 counties in New Mexico that qualify, ranked against each other statewide. The median across all 33 is -1.6%. Biggest climber in the top 100 since 2020: Torrance County, NM, up 25 places to #3.

Flip the list · Fastest shrinking, US counties →
SAME RANKING BYCitiesStatesMetros
Fastest growing by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPPOPULATION GROWTHVS 2000
01▲14Valencia County, NMNM82,013+7.6%−38.6 pts
02▲1Sandoval County, NMNM159,565+7.2%−34.8 pts
03▲25Torrance County, NMNM16,100+7.0%−57.4 pts
04▲17Catron County, NMNM3,827+6.9%−31.3 pts
05▲2Doña Ana County, NMNM229,091+4.3%−24.6 pts
06Otero County, NMNM70,368+3.7%−16.2 pts
07▼2Santa Fe County, NMNM156,907+1.3%−29.3 pts
08▼6Lea County, NMNM74,749+0.4%+0.9 pts
09▼8Eddy County, NMNM62,509+0.3%−6.0 pts
10▼2Taos County, NMNM34,564+0.2%−29.5 pts
11▼7Los Alamos County, NMNM19,407-0.1%−1.3 pts
12▼1Luna County, NMNM25,407-0.1%−38.2 pts
13▲12San Juan County, NMNM120,340-1.1%−25.3 pts
14▼5Bernalillo County, NMNM667,601-1.3%−17.1 pts
15▼3Rio Arriba County, NMNM39,832-1.3%−21.2 pts
16▼2Cibola County, NMNM26,807-1.3%−8.9 pts
17▲3Sierra County, NMNM11,395-1.6%−35.4 pts
18▲11Colfax County, NMNM12,184-1.6%−11.4 pts
19▼2Lincoln County, NMNM19,844-2.1%−61.0 pts
20▲3Guadalupe County, NMNM4,343-2.4%−15.1 pts
21▼5Chaves County, NMNM63,364-2.8%−8.9 pts
22▼3Roosevelt County, NMNM18,615-3.0%−10.9 pts
23▲10De Baca County, NMNM1,647-3.0%−2.5 pts
24▲7Mora County, NMNM4,051-3.3%−24.8 pts
25▼3Grant County, NMNM27,252-3.3%−15.3 pts
26▼8Quay County, NMNM8,454-3.3%+2.8 pts
27San Miguel County, NMNM26,260-3.5%−20.5 pts
28▼15Curry County, NMNM46,655-3.7%−10.4 pts
29▼3Socorro County, NMNM15,838-4.6%−27.0 pts
30Union County, NMNM3,844-5.8%−7.0 pts
31▲1Hidalgo County, NMNM3,929-6.0%−5.5 pts
32▼8Harding County, NMNM617-6.1%+11.8 pts
33▼23McKinley County, NMNM68,119-6.6%−29.8 pts
SHOWING 1–33 OF 33

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES