County Dossier

Seneca County

New York | County

Population

32,920

Land Area

323.7 sq mi

Context

Nonmetro

Geography

County silhouette

Land Area
323.7 sq mi
Water Area
66.7 sq mi
Water Share
17.1%

Terrain Layer

Open the county terrain view inside the atlas flow.

Terra Firma

Population & Housing

Population

32,920

Density
101.7 / sq mi
Households
13,606
Housing Units
16,194
Median Age
43.0 years

Income & Economy

Median Household Income

$68,089

GDP

$2.06B

Real GDP Change+2.9%
Per Capita Income
$37,704
Personal Income
$1.70B
Personal Income Per Capita
$52,125

Classification

RUCC 6
Nonmetro

Urban population of 5,000 to 20,000, adjacent to a metro area

Relief

Min

374 ft

Mean

627 ft

Max

1,635 ft

Provenance

GEOID 36099 ANSI 00974147
Latitude 42.78229 Longitude -76.82709
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