Demographics & People — Mad River, California

Population Overview

Population (Census)	544
Estimated 2026	~100
Median Age	59.1
Total Households	191
Family Households	74
Average Household Size	2.85
Diversity Index	0.0983 (relatively homogeneous)

Race & Ethnicity

White	494
Black or African American	0
Asian	0
Hispanic or Latino	27

Heritage & Ancestry

Group	Count
Unclassified or not reported	70
Irish	55
German	53
Italian	42
Hispanic: Mexican	34
Hispanic: Hispanic or Latino	34
Other groups	29
Scottish	27
Scotch-Irish	24
Portuguese	17

Language

English Only	469
Spanish	0
Population 5+	525

Veterans

Veterans	56
Population 18+	263

Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013 (county fallback). Data for Mad River, California.