Demographics & People — San Mateo, New Mexico

Population Overview

Population (Census)	726
Estimated 2026	~400
Median Age	25.6
Total Households	175
Family Households	102
Average Household Size	4.15
Diversity Index	N/A (N/A)

Race & Ethnicity

White	356
Black or African American	0
Asian	0
Hispanic or Latino	265

Heritage & Ancestry

Group	Count
American	21

Language

English Only	356
Spanish	265
Population 5+	621

Veterans

Veterans	0
Population 18+	21

Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013 (county fallback). Data for San Mateo, New Mexico.