Demographics & People — Fort Belknap Agency, Montana

Population Overview

Population (Census)	1,434
Estimated 2026	~900
Median Age	28.1
Total Households	374
Family Households	275
Average Household Size	3.76
Diversity Index	0.4996 (moderately diverse)

Race & Ethnicity

White	18
Black or African American	0
Asian	0
Hispanic or Latino	19

Heritage & Ancestry

Group	Count
Other groups	1,279
Unclassified or not reported	186
Hispanic: Hispanic or Latino	18
Hispanic: Central American	16
Hispanic: Guatemalan	16
German	12
African	11
Subsaharan African	11
American	4
Italian	1

Language

English Only	1,243
Spanish	0
Population 5+	1,302

Veterans

Veterans	35
Population 18+	887

Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013 (county fallback). Data for Fort Belknap Agency, Montana.