Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/IA/HUMBOLDT

Humboldt ZIP code, Iowa

The ZIP code for Humboldt, IA is 50548, and its area code is 515.

USPS city name
1 ZIP code
Population
4,771
Area code
515
State
Iowa

Humboldt in numbers

About 4,771 people live in Humboldt, in 2,026 households. The median household income is $74,500 a year, about the same as the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $173,600 (17% below the Iowa median), and median gross rent is $740 a month. The median age is 39.6; 25.0% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 18 minutes.

Population4,771Humboldt4,771
Households2,026Humboldt2,026
Median age39.6Humboldt39.6Iowa38.6US 38.9
Median household income$74,500Humboldt$74,500Iowa$75,059US $80,734
Median home value$173,600Humboldt$173,600Iowa$208,000US $332,700
Median gross rent$740Humboldt$740Iowa$972US $1,413
Bachelor's degree or higher25.0%Humboldt25.0%Iowa31.4%US 35.7%
Mean commute18.2 minHumboldt18.2 minIowa19.8 minUS 26.4 min
Population density1,026 / sq miHumboldt1,026 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Humboldt city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Humboldt

ZIP codes with the USPS city name Humboldt
ZIP City Type Population Median income Median home
50548 Humboldt , IA Standard 5,722 $76,214 $188,200

Map of Humboldt ZIP codes

50548

The ZIP codes of Humboldt, IA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Humboldt

The nearest larger towns are Fort Dodge (24,827 people, 15 mi), Algona (5,377 people, 24 mi) and Webster City (7,769 people, 27 mi).

Towns near Humboldt
TownPopulationDistance
Fort Dodge 24,827 14.9 mi
Eagle Grove 3,593 16.8 mi
Algona 5,377 24.4 mi
Clarion 2,770 25.1 mi
Webster City 7,769 27.4 mi

More nearby: every ZIP code in Humboldt County · Iowa ZIP codes

Cite this page

zipcodes.pro. “Humboldt, IA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ia/humboldt

Underlying data is public domain or openly licensed — sources, vintages and licences.