Clayton County, Iowa ZIP codes
15 ZIP codes are in Clayton County, plus 9 that cross in from neighboring counties.
- ZIP codes
- 15
- Population in these ZIPs
- 16,181
- Avg. median income
- $70,100population-weighted
- Cities & towns
- 15
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Clayton County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 52035 | Colesburg | 1,331 | $62,109 | $260,500 |
| 52042 | Edgewood | 1,804 | $95,833 | $313,100 |
| 52043 | Elkader | 2,058 | $76,705 | $283,200 |
| 52044 | Elkport | 297 | $75,792 | $97,000 |
| 52047 | Farmersburg | 462 | $59,250 | $277,500 |
| 52048 | Garber | 201 | $56,477 | $329,000 |
| 52049 | Garnavillo | 1,370 | $61,964 | $259,600 |
| 52052 | Guttenberg | 2,999 | $61,528 | $278,300 |
| 52066 | North Buena Vista | 124 | $51,563 | $104,200 |
| 52072 | Saint Olaf | 454 | $62,250 | $308,400 |
| 52076 | Strawberry Point | 2,258 | $72,857 | $294,500 |
| 52077 | Volga | 313 | $77,188 | $319,400 |
| 52156 | Luana | 769 | $99,554 | $328,500 |
| 52157 | Mc Gregor | 1,451 | $52,625 | $246,200 |
| 52158 | Marquette | 290 | $47,188 | $132,600 |
ZIP codes partly in Clayton County
These ZIP codes are mostly in a neighboring county but cover part of Clayton County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 50606 | Arlington | Fayette County | 803 | $61,346 | $242,900 |
| 52050 | Greeley | Delaware County | 422 | $67,206 | $260,900 |
| 52053 | Holy Cross | Dubuque County | 1,148 | $83,000 | $341,900 |
| 52073 | Sherrill | Dubuque County | 1,381 | $95,526 | $381,500 |
| 52135 | Clermont | Fayette County | 834 | $88,438 | $202,300 |
| 52141 | Elgin | Fayette County | 1,259 | $64,647 | $275,900 |
| 52159 | Monona | Allamakee County | 2,398 | $74,259 | $241,900 |
| 52162 | Postville | Allamakee County | 3,744 | $64,125 | $214,600 |
| 52169 | Wadena | Fayette County | 367 | $52,321 | $234,600 |
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 Clayton County
Nearby counties
Frequently asked questions
How many ZIP codes are in Clayton County, Iowa?
15 ZIP codes are mainly in Clayton County, and 9 more ZIP codes from neighboring areas reach partly into it.
What cities are in Clayton County?
ZIP codes in Clayton County use the city names Colesburg, Edgewood, Elkader, Elkport, Farmersburg, Garber, Garnavillo, Guttenberg, Luana, Marquette, Mc Gregor and North Buena Vista and others.