ZIP code · Humboldt · Iowa · United States

ZIP code 50548 — Humboldt

ZIP code 50548 serves Humboldt, Iowa.

Postal code
50548
Single source Value from one source, not cross-checked.
City
Humboldt
County
Humboldt FIPS 19091
State
Iowa
Country
United States
Coordinates
42.7196, -94.2132 — precision precise (locality)
View on OpenStreetMap
Population
5,482 (ZCTA, ACS 5-year)
Population density
44 / sq mi
Land area
124.3 sq mi (321.9 km²) (ZCTA, ACS 5-year)
Median household income
$71,043
Per-capita income
$39,727
Median age
41.5
Households
2,438
Housing units
2,556
Median home value
$177,700
Median gross rent
$731 / month
Congressional district
IA-4 (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
515
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 81°F), coldest Jan (avg low 9°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F242943576878817973604330
Avg low °F91225364959636051392615
Precip in0.91.02.03.34.85.54.24.53.32.51.61.3

NOAA 1991–2020 climate normals from the nearest station: HUMBOLDT WTP (0.4 mi) · NOAA NCEI

Places in ZIP 50548

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