County Dossier

Mahaska County

Iowa | County

Population

22,021

Land Area

570.9 sq mi

Context

Nonmetro

Geography

County silhouette

Land Area
570.9 sq mi
Water Area
2.5 sq mi
Water Share
0.4%

Terrain Layer

Open the county terrain view inside the atlas flow.

Terra Firma

Population & Housing

Population

22,021

Density
38.6 / sq mi
Households
8,743
Housing Units
9,728
Median Age
39.0 years

Income & Economy

Median Household Income

$70,940

GDP

$1.19B

Real GDP Change+2.2%
Per Capita Income
$36,118
Personal Income
$1.27B
Personal Income Per Capita
$57,491

Classification

RUCC 7
Nonmetro

Urban population of 5,000 to 20,000, not adjacent to a metro area

Relief

Min

657 ft

Mean

794 ft

Max

915 ft

Provenance

GEOID 19123 ANSI 00465250
Latitude 41.33080 Longitude -92.63637
Canonical 2025 Gazetteer ACS ACS 2020-2024 5-year BEA BEA county 2024 release (2026-02-05) BLS BLS LAUS 2024 annual average USDA USDA RUCC 2023 USGS USGS 3DEP published as of 2026-03-23