Worthington Iowa ZIP Codes
Worthington holds a single ZIP code.
Every ZIP code in Worthington
| ZIP code | County |
|---|---|
| 52078 | Dubuque 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Worthington codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Worthington. 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 Worthington ZIP code begins 520. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 46 ZIP codes, so Worthington accounts for 2% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Worthington
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 Worthington occupies.
Worthington Iowa area codes in full →
Where Worthington's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Worthington
| City | Distance | ZIP codes |
|---|---|---|
| Dyersville Iowa ZIP codes | 5.8 mi | 1 ZIP code |
| Farley Iowa ZIP codes | 6.5 mi | 1 ZIP code |
| Hopkinton Iowa ZIP codes | 7.6 mi | 1 ZIP code |
| Cascade Iowa ZIP codes | 8.9 mi | 1 ZIP code |
| Earlville Iowa ZIP codes | 9.6 mi | 1 ZIP code |
| Epworth Iowa ZIP codes | 10 mi | 1 ZIP code |
| New Vienna Iowa ZIP codes | 10 mi | 1 ZIP code |
| Delhi Iowa ZIP codes | 11 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.