Demographics & People — San Mateo, California

Population Overview

Population (Census)103,555
Estimated 2026~102,100
Median Age38.3
Total Households39,760
Family Households24,677
Average Household Size2.56
Diversity Index0.6619 (highly diverse)

Race & Ethnicity

White42,707
Black or African American1,539
Asian28,025
Hispanic or Latino27,721

Heritage & Ancestry

GroupCount
Other groups51,586
Hispanic: Hispanic or Latino25,743
Unclassified or not reported19,587
Hispanic: Mexican13,078
Irish7,559
Hispanic: Central American7,278
Italian6,340
German6,326
English5,284
Hispanic: Guatemalan3,234

Language

English Only53,467
Spanish19,216
Population 5+97,382

Veterans

Veterans2,689
Population 18+83,703

Commuting

Mean Commute Time26.1 minutes
Work from Home24.8%
Commuter ProfileN/A
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for San Mateo, California.