Demographics & People — Johnston, Iowa

Population Overview

Population (Census)24,196
Estimated 2026~24,800
Median Age37.4
Total Households9,552
Family Households6,555
Average Household Size2.51
Diversity Index0.3177 (somewhat diverse)

Race & Ethnicity

White19,442
Black or African American2,081
Asian1,735
Hispanic or Latino514

Heritage & Ancestry

GroupCount
German6,225
Unclassified or not reported4,909
Other groups4,594
Irish3,131
English2,268
Norwegian1,594
Subsaharan African1,283
Liberian1,224
Hispanic: Hispanic or Latino736
Italian725

Language

English Only20,062
Spanish389
Population 5+22,752

Veterans

Veterans865
Population 18+16,480

Commuting

Mean Commute Time19.7 minutes
Work from Home14.0%
Commuter ProfileN/A
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Johnston, Iowa.