Humboldt County, IA ZIP codes
There are 10 ZIP codes in Humboldt County, IA, in 10 towns, from 50519 to 50591. The largest are 50548 (Humboldt), 50529 (Dakota City) and 50558 (Livermore). 1 more crosses into it from a neighbouring county: 50541.
The county seat is Dakota City.
- ZIP codes
- 10
- Partly in it
- 1 more
- Towns
- 10
- County seat
- Dakota City
- County FIPS
19091- State
- Iowa
- Population
- 9,591
- Median household income
- $71,946
- Land area
- 434 sq mi
Humboldt County ZIP codes by town
- Dakota City (county seat)
- 50529
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
ZIP codes partly in Humboldt County
This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Humboldt County.
- 50541 Gilmore City · mostly in Pocahontas County
Map of Humboldt County ZIP codes
The ZIP codes of Humboldt County, 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.
Humboldt County in numbers
About 9,591 people live in Humboldt County, in 4,219 households, the 78th most populous of Iowa's 99 counties. The median household income is $71,946 a year, 4% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $155,800 (25% below the Iowa median), and median gross rent is $744 a month. The median age is 42.1; 19.4% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 20 minutes.
| Population | 9,591 |
|---|---|
| Households | 4,219 |
| Median age | 42.1 |
| Median household income | $71,946 |
| Median home value | $155,800 |
| Median gross rent | $744 |
| Bachelor's degree or higher | 19.4% |
| Mean commute | 19.7 min |
| Population density | 22 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Humboldt County
| Town | ZIP codes | Population |
|---|---|---|
| Humboldt | 1 | 4,771 |
| Dakota City | 1 | 752 |
| Livermore | 1 | 416 |
| Bode | 1 | 379 |
| Thor | 1 | 257 |
| Renwick | 1 | 229 |
| Rutland | 1 | 120 |
| Bradgate | 1 | 104 |
| Ottosen | 1 | 31 |
| Hardy | 1 | 10 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Humboldt County.
- Webster County (14)
- Kossuth County (12)
- Wright County (9)
- Hancock County (9)
- Palo Alto County (8)
- Pocahontas County (9)
Not sure you are in Humboldt County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Humboldt County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
50519 | Bode , IA | Standard | 765 | $72,083 | $123,600 |
50520 | Bradgate , IA | Standard | 114 | $73,750 | $44,300 |
50529 | Dakota City , IA | Standard | 752 | $60,417 | $119,800 |
50545 | Hardy , IA | Standard | 139 | $31,429 | — |
50548 | Humboldt , IA | Standard | 5,722 | $76,214 | $188,200 |
50558 | Livermore , IA | Standard | 653 | $68,750 | $123,600 |
50570 | Ottosen , IA | Standard | 203 | $67,813 | $202,000 |
50577 | Renwick , IA | Standard | 341 | $57,500 | $107,400 |
50582 | Rutland , IA | Standard | 170 | $87,125 | — |
50591 | Thor , IA | Standard | 405 | $75,000 | $162,500 |
Cite this page
zipcodes.pro. “Humboldt County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ia/county/humboldt
Underlying data is public domain or openly licensed — sources, vintages and licences.