Hamilton County, Iowa ZIP codes
9 ZIP codes are in Hamilton County, plus 6 that cross in from neighboring counties.
- ZIP codes
- 9
- Population in these ZIPs
- 14,564
- Avg. median income
- $70,800population-weighted
- Cities & towns
- 9
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ZIP codes in Hamilton County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 50034 | Blairsburg | 328 | $76,250 | $109,600 |
| 50075 | Ellsworth | 807 | $81,250 | $214,700 |
| 50130 | Jewell | 1,468 | $78,594 | $216,100 |
| 50132 | Kamrar | 427 | $83,056 | $171,600 |
| 50231 | Randall | 142 | $72,321 | $110,800 |
| 50246 | Stanhope | 614 | $61,324 | $175,800 |
| 50249 | Stratford | 1,312 | $60,761 | $203,100 |
| 50271 | Williams | 581 | $82,656 | $164,500 |
| 50595 | Webster City | 8,885 | $69,167 | $150,200 |
ZIP codes partly in Hamilton County
These ZIP codes are mostly in a neighboring county but cover part of Hamilton County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 50006 | Alden | Hardin County | 1,437 | $69,783 | $152,800 |
| 50036 | Boone | Boone County | 16,154 | $79,255 | $210,700 |
| 50230 | Radcliffe | Hardin County | 1,145 | $87,778 | $202,100 |
| 50248 | Story City | Story County | 4,216 | $100,864 | $285,900 |
| 50532 | Duncombe | Webster County | 804 | $65,000 | $188,300 |
| 50599 | Woolstock | Wright County | 410 | $102,679 | $175,100 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Hamilton County
Nearby counties
Frequently asked questions
How many ZIP codes are in Hamilton County, Iowa?
9 ZIP codes are mainly in Hamilton County, and 6 more ZIP codes from neighboring areas reach partly into it.
What cities are in Hamilton County?
ZIP codes in Hamilton County use the city names Blairsburg, Ellsworth, Jewell, Kamrar, Randall, Stanhope, Stratford, Webster City and Williams.