Hamilton County, IA ZIP codes
There are 9 ZIP codes in Hamilton County, IA, in 9 towns, from 50034 to 50595. The largest are 50595 (Webster City), 50130 (Jewell) and 50249 (Stratford). 2 more cross into it from neighbouring counties: 50248 and 50230.
The county seat is Webster City.
- ZIP codes
- 9
- Partly in it
- 2 more
- Towns
- 9
- County seat
- Webster City
- County FIPS
19079- State
- Iowa
- Population
- 14,886
- Median household income
- $72,432
- Land area
- 577 sq mi
- Area code
- 515
Hamilton County ZIP codes by town
- Webster City (county seat)
- 50595
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 Hamilton County
These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Hamilton County.
- 50230 Radcliffe · mostly in Hardin County
- 50248 Story City · mostly in Story County
Map of Hamilton County ZIP codes
The ZIP codes of Hamilton 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.
Hamilton County in numbers
About 14,886 people live in Hamilton County, in 6,434 households, the 51st most populous of Iowa's 99 counties. The median household income is $72,432 a year, 3% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $156,400 (25% below the Iowa median), and median gross rent is $877 a month. The median age is 41.7; 22.8% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 21 minutes.
| Population | 14,886 |
|---|---|
| Households | 6,434 |
| Median age | 41.7 |
| Median household income | $72,432 |
| Median home value | $156,400 |
| Median gross rent | $877 |
| Bachelor's degree or higher | 22.8% |
| Mean commute | 21.4 min |
| Population density | 26 / 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 Hamilton County
| Town | ZIP codes | Population |
|---|---|---|
| Webster City | 1 | 7,769 |
| Jewell | 1 | 1,468 |
| Stratford | 1 | 735 |
| Stanhope | 1 | 509 |
| Ellsworth | 1 | 482 |
| Williams | 1 | 369 |
| Kamrar | 1 | 145 |
| Randall | 1 | 142 |
| Blairsburg | 1 | 139 |
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 Hamilton County.
- Story County (16)
- Webster County (14)
- Boone County (10)
- Hardin County (12)
- Wright County (9)
- Franklin County (11)
Not sure you are in Hamilton County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Hamilton County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
50034 | Blairsburg , IA | Standard | 328 | $76,250 | $109,600 |
50075 | Ellsworth , IA | Standard | 807 | $81,250 | $163,300 |
50130 | Jewell , IA | Standard | 1,468 | $78,594 | $169,000 |
50132 | Kamrar , IA | Standard | 427 | $83,056 | $171,600 |
50231 | Randall , IA | Standard | 142 | $72,321 | $110,800 |
50246 | Stanhope , IA | Standard | 614 | $61,324 | $119,300 |
50249 | Stratford , IA | Standard | 1,312 | $60,761 | $119,000 |
50271 | Williams , IA | Standard | 581 | $82,656 | $113,100 |
50595 | Webster City , IA | Standard | 8,885 | $69,167 | $153,800 |
Cite this page
zipcodes.pro. “Hamilton County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ia/county/hamilton
Underlying data is public domain or openly licensed — sources, vintages and licences.