Fort Atkinson Iowa ZIP Codes
Fort Atkinson holds a single ZIP code.
Every ZIP code in Fort Atkinson
| ZIP code | County |
|---|---|
| 52144 | Winneshiek County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Fort Atkinson codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Fort Atkinson. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Fort Atkinson ZIP code begins 521. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 33 ZIP codes, so Fort Atkinson accounts for 3% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Fort Atkinson
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Fort Atkinson occupies.
Fort Atkinson Iowa area codes in full →
Where Fort Atkinson's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Fort Atkinson
| City | Distance | ZIP codes |
|---|---|---|
| Spillville Iowa ZIP codes | 4.1 mi | 1 ZIP code |
| Calmar Iowa ZIP codes | 4.2 mi | 1 ZIP code |
| Waucoma Iowa ZIP codes | 7.9 mi | 1 ZIP code |
| Ossian Iowa ZIP codes | 8.6 mi | 1 ZIP code |
| Protivin Iowa ZIP codes | 9.3 mi | 1 ZIP code |
| Ridgeway Iowa ZIP codes | 11 mi | 1 ZIP code |
| Lawler Iowa ZIP codes | 12 mi | 1 ZIP code |
| Castalia Iowa ZIP codes | 13 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.