ZIP code · Norwalk · Wisconsin · United States

ZIP code 54648 — Norwalk

ZIP code 54648 serves Norwalk, Wisconsin.

Postal code
54648
Single source Value from one source, not cross-checked.
City
Norwalk
County
Monroe FIPS 55081
State
Wisconsin
Country
United States
Coordinates
43.8128, -90.6801 — precision precise (locality)
View on OpenStreetMap
Population
1,616 (ZCTA, ACS 5-year)
Population density
22 / sq mi
Land area
73.8 sq mi (191.2 km²) (ZCTA, ACS 5-year)
Median household income
$70,227
Per-capita income
$28,292
Median age
37.3
Households
566
Housing units
634
Median home value
$173,000
Median gross rent
$824 / month
Congressional district
WI-3 (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 80°F), coldest Jan (avg low 8°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F263142566877807972594431
Avg low °F81121344555595748362615
Precip in1.21.01.83.84.75.44.44.43.82.71.91.5

NOAA 1991–2020 climate normals from the nearest station: CASHTON 3NNW (6.0 mi) · NOAA NCEI

Places in ZIP 54648

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