Demographics & People — Santa Margarita, California

Population Overview

Population (Census)	665
Estimated 2026	~4,100
Median Age	37.5
Total Households	435
Family Households	210
Average Household Size	1.53
Diversity Index	0.1581 (relatively homogeneous)

Race & Ethnicity

White	549
Black or African American	0
Asian	0
Hispanic or Latino	52

Heritage & Ancestry

Group	Count
Portuguese	200
German	157
Irish	145
Other groups	92
Unclassified or not reported	57
Dutch	54
Hispanic: Hispanic or Latino	50
Czech	48
European	42
Hispanic: Spaniard	37

Language

English Only	665
Spanish	0
Population 5+	665

Veterans

Veterans	0
Population 18+	698

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