Grafton, IA zip code
Grafton, Iowa uses one zip code: 50440. Most of it is in Worth County. Together these zip codes are home to about 361 people.
Zip codes
1
Population
361
All zips combined
Largest zip
50440
361 residents
Zip codes in Grafton
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 50440 | 361 | $76,429 |