Iowa County, Iowa ZIP codes
13 ZIP codes are in Iowa County, plus 9 that cross in from neighboring counties.
- ZIP codes
- 13
- Population in these ZIPs
- 15,981
- Avg. median income
- $73,200population-weighted
- Cities & towns
- 12
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Iowa County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 52203 | Amana | 2,231 | $101,950 | $271,400 |
| 52204 PO Box | Amana | — | — | — |
| 52220 | Conroy | 199 | — | $196,200 |
| 52236 | Homestead | 564 | $87,958 | $309,300 |
| 52251 | Ladora | 544 | $87,708 | $153,400 |
| 52301 | Marengo | 4,028 | $70,150 | $192,200 |
| 52307 | Middle Amana | 63 | $43,388 | — |
| 52308 | Millersburg | 129 | $79,688 | $106,500 |
| 52316 | North English | 1,597 | $60,768 | $182,500 |
| 52325 | Parnell | 477 | $75,714 | $312,000 |
| 52334 | South Amana | 181 | — | $268,500 |
| 52347 | Victor | 1,386 | $78,482 | $164,900 |
| 52361 | Williamsburg | 4,582 | $60,992 | $273,800 |
ZIP codes partly in Iowa County
These ZIP codes are mostly in a neighboring county but cover part of Iowa County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 50136 | Keswick | Keokuk County | 376 | $75,625 | $140,700 |
| 52208 | Belle Plaine | Benton County | 2,877 | $74,127 | $158,600 |
| 52209 | Blairstown | Benton County | 1,158 | $86,094 | $253,300 |
| 52221 | Guernsey | Poweshiek County | 332 | $86,473 | $208,700 |
| 52222 | Deep River | Poweshiek County | 631 | $81,964 | $231,000 |
| 52318 | Norway | Benton County | 1,099 | $85,625 | $271,300 |
| 52322 | Oxford | Johnson County | 2,266 | $64,444 | $368,700 |
| 52355 | Webster | Keokuk County | 283 | $63,750 | $110,200 |
| 52356 | Wellman | Washington County | 2,664 | $57,321 | $254,200 |
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 Iowa County
Nearby counties
Frequently asked questions
How many ZIP codes are in Iowa County, Iowa?
13 ZIP codes are mainly in Iowa County, and 9 more ZIP codes from neighboring areas reach partly into it.
What cities are in Iowa County?
ZIP codes in Iowa County use the city names Amana, Conroy, Homestead, Ladora, Marengo, Middle Amana, Millersburg, North English, Parnell, South Amana, Victor and Williamsburg.