Demographics & People — Seabrook, Massachusetts

Population Overview

Population (Census)	545
Estimated 2026	~500
Median Age	61.5
Total Households	247
Family Households	201
Average Household Size	2.21
Diversity Index	N/A (N/A)

Race & Ethnicity

White	527
Black or African American	0
Asian	0
Hispanic or Latino	0

Heritage & Ancestry

Group	Count
Irish	206
Unclassified or not reported	175
Italian	80
English	42
German	41
Polish	35
Estonian	31
Other groups	26
Russian	23
Arab	22

Language

English Only	524
Spanish	0
Population 5+	530

Veterans

Veterans	4
Population 18+	533

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