San MateoNM
A town of 602, settled in 1876.
Is San Mateo a good place to live?
San Mateo has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
602 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Moving to San Mateo: who provides what
San Mateo is unincorporated, so Cibola County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Aug 27, 2026.
The data
Ordered by what stands out in San Mateo.
San Mateo skews younger than New Mexico
College graduates make up a quarter of adults 25 and older, against 31% across New Mexico. People 65 and older are 2% of residents (19% statewide); children under 18 are 35% of residents (22% statewide).
Ages · share of residents
Education · adults 25 and older
Women and men · all residents
Somewhere between 24% and 99% women
The Census survey reached too few of San Mateo’s residents to say more: its margin here is ±37.6 points. Across New Mexico, 50.3% of residents are women.
| San Mateo | NM | U.S. | |
|---|---|---|---|
| Under 10 | 34.9% | 11% | 11.6% |
| 10 to 17 | 0% | 10.7% | 10.3% |
| 18 to 24 | 0% | 9.3% | 9.1% |
| 25 to 34 | 24.9% | 13.2% | 13.7% |
| 35 to 44 | 11.6% | 12.8% | 13.2% |
| 45 to 54 | 15.3% | 11.2% | 12.2% |
| 55 to 64 | 11.6% | 12.5% | 12.7% |
| 65 to 74 | 1.7% | 11.5% | 10.2% |
| 75 and older | 0% | 7.8% | 7% |
| No diploma | 0% | 12% | 10.4% |
| High school | 38.3% | 25.7% | 26% |
| Some college | 37.2% | 22.2% | 19.1% |
| Associate’s | 0% | 9.2% | 8.8% |
| Bachelor’s | 1% | 17.1% | 21.6% |
| Graduate | 23.5% | 13.9% | 14.1% |
U.S. Census Bureau · ACS 2020-2024 5-year estimates · in a town of 600, single groups can be off by several points
High risk in San Mateo, with inland flooding at the top
Of the losses FEMA expects in San Mateo, 76% come from inland flooding and 9% from cold waves. Expected damage from storms and floods is higher here than in 72% of U.S. communities.
FEMA National Risk Index · OpenFEMA
Expect four seasons and pleasant summers in San Mateo
The town’s July high stands at 84°F, against 93°F in New Mexico’s towns and 85°F across U.S. towns.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
Fewer of San Mateo’s adults have been diagnosed with depression than in the typical New Mexico or U.S. town
For adults 18 to 64 in San Mateo, the share who have no health insurance is 20%. San Mateo: 16% of adults have diabetes, where New Mexico’s towns sit at 14% and U.S. towns at 12%. On the CDC’s 32 measures, San Mateo is ahead of New Mexico on 8 and behind on 1.
| San Mateo | New Mexico towns | U.S. towns | |
|---|---|---|---|
| No health insurance, 18–64 (CDC PLACES) | 20% | 16% | 8.1% |
| Frequent mental distress (CDC PLACES) | 13% | 16% | 17% |
| Depression (CDC PLACES) | 18% | 23% | 23% |
| Diabetes (CDC PLACES) | 16% | 14% | 12% |
| What stands out | San Mateo | NM |
|---|---|---|
| Fewer adults with COPD | 4.7% | 6.6% |
| Fewer smokers | 10.2% | 13.4% |
| More adults with diabetes | 16.4% | 13.2% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Everything we know about San Mateo
Colleges nearby
None within 15 miles of San Mateo; the nearest are
About 0 of every 100 San Mateo residents are enrolled in college, against 6 across New Mexico.
About San Mateo
Census-designated place in New Mexico, United States
San Mateo is a census-designated place in Cibola County, New Mexico, United States. As of the 2020 census, San Mateo had a population of 139. The community has a Catholic church, a Baptist church, a Morada, a cemetery, a Volunteer Fire Department(McKinley County funded) and an old abandoned elementary school. It is also coined "the Uranium Capital of the World".
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 4.7 sq mi
- Elevation
- 7,313 ft
Questions about San Mateo
Short answers, built from the data on this page.
Is San Mateo, NM a good place to live?
San Mateo has fewer than 1,000 residents, too few for fair grades; the figures below are still real.