ZIP code · Monroe · Wisconsin · United States

ZIP code 53566 — Monroe

ZIP code 53566 serves Monroe, Wisconsin.

Postal code
53566
Single source Value from one source, not cross-checked.
City
Monroe
County
Green FIPS 55045
State
Wisconsin
Country
United States
Coordinates
42.5991, -89.6403 — precision precise (locality)
View on OpenStreetMap
Population
14,772 (ZCTA, ACS 5-year)
Population density
97 / sq mi
Land area
152.9 sq mi (396.1 km²) (ZCTA, ACS 5-year)
Median household income
$71,801
Per-capita income
$41,734
Median age
42.7
Households
6,535
Housing units
6,810
Median home value
$203,700
Median gross rent
$849 / month
Congressional district
WI-2 (119th Congress)
USDA hardiness zone
5a (-20 to -15 °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
608
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 °F273144577079838073594532
Avg low °F111425374959636152402918
Precip in1.61.72.13.84.16.24.24.54.23.22.41.9

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

Places in ZIP 53566

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