#1Los Lunas
Valencia County17,391 in 2020·20,572 in 2025·+3,181 people
Los Lunas, #1 on this list · Photo: AllenS · Public domainNew Mexico rankings · Growth
Fastest-growing towns in New Mexico
Los Lunas has grown fastest of New Mexico’s 43 towns of 2,500+: up 18.3% from 17,391 residents in April 2020 to an estimated 20,572 in July 2025 (Census Bureau estimates). The typical town here changed −1.1%; 27 of the 43 lost residents.
Census Bureau population estimates, Vintage 2025: July 1, 2025 against the April 2020 base, both on January 2025 town lines (people a town annexed are in its base, not its growth). Estimates, not counts. Unincorporated communities (census-designated places) get no estimate, so they aren’t listed. A described list: no letters. How grades work
#1+18.3%
#2Rio Rancho
Sandoval County104,073 in 2020·114,419 in 2025·+10,346 people
#3Sunland Park
Doña Ana County16,711 in 2020·18,268 in 2025·+1,557 people
All 43 towns
Growth since 2020, highest first.
43 towns ranked. Not here? See why a town may be missing.
#TownGrowth since 2020People addedResidents
Quick answers
Questions people ask
What is the fastest-growing town in New Mexico?
Los Lunas (Valencia County): it grew 18.3%, from 17,391 residents in April 2020 to an estimated 20,572 in July 2025. Rio Rancho (+9.9%) and Sunland Park (+9.3%) follow.
How are these towns ranked?
By the percent change in residents from the Census Bureau’s April 2020 estimates base to its latest July 1 estimate, highest first, on the exact change: two towns shown with the same tenth of a percent keep the order of their unrounded figures, and only an identical change shares a rank (T). The base is the 2020 Census count redrawn on today’s town lines, so a town that annexed land since 2020 changes only by births, deaths and moves, not by the people it took in. How grades work.
Why isn’t my town on this list?
The list covers the towns TownRatings grades that had 2,500+ residents in the 2020 estimates base (43 in New Mexico). Census-designated places (unincorporated communities) have no Census Bureau estimates, so they never appear; a town incorporated since 2020, or one TownRatings merges with its twin township, isn’t listed either. Every town is on the New Mexico page.
Go deeper
All New Mexico rankings →More New Mexico lists
Every list ranks the same 2,500+ towns, so a town’s rank means the same thing on each.
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