ZIP code · Fort Atkinson · Wisconsin · United States

ZIP code 53538 — Fort Atkinson

ZIP code 53538 serves Fort Atkinson, Wisconsin.

Postal code
53538
Single source Value from one source, not cross-checked.
City
Fort Atkinson
County
Jefferson FIPS 55055
State
Wisconsin
Country
United States
Coordinates
42.9229, -88.8467 — precision precise (locality)
View on OpenStreetMap
Population
18,604 (ZCTA, ACS 5-year)
Population density
192 / sq mi
Land area
97.1 sq mi (251.5 km²) (ZCTA, ACS 5-year)
Median household income
$80,784
Per-capita income
$41,581
Median age
44
Households
7,856
Housing units
8,444
Median home value
$228,200
Median gross rent
$967 / month
Congressional districts
WI-5 (also WI-1) (119th Congress)
USDA hardiness zone
5b (-15 to -10 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Chicago (UTC−6 / UTC−5 DST)
Area code
920
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 83°F), coldest Jan (avg low 11°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F283244576979838174614633
Avg low °F111425364858626051402918
Precip in1.51.42.03.64.15.04.03.93.32.82.21.7

NOAA 1991–2020 climate normals from the nearest station: FT ATKINSON (1.4 mi) · NOAA NCEI

Places in ZIP 53538

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page