ZIP code · Clear Lake · Iowa · United States

ZIP code 50428 — Clear Lake

ZIP code 50428 serves Clear Lake, Iowa.

Postal code
50428
Single source Value from one source, not cross-checked.
City
Clear Lake
County
Cerro Gordo FIPS 19033
State
Iowa
Country
United States
Coordinates
43.1406, -93.3850 — precision precise (locality)
View on OpenStreetMap
Population
9,093 (ZCTA, ACS 5-year)
Population density
78 / sq mi
Land area
117.3 sq mi (303.7 km²) (ZCTA, ACS 5-year)
Median household income
$72,932
Per-capita income
$54,428
Median age
50.5
Households
4,091
Housing units
5,630
Median home value
$253,900
Median gross rent
$769 / month
Congressional district
IA-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
641
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 7°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F242942587080838074604430
Avg low °F71124354757615849372414
Precip in0.91.22.34.25.25.44.43.83.52.51.71.3

NOAA 1991–2020 climate normals from the nearest station: MASON CITY MUNI AP (3.1 mi) · NOAA NCEI

Places in ZIP 50428

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