Clear Lake Iowa ZIP Codes
Clear Lake holds a single ZIP code.
Every ZIP code in Clear Lake
| ZIP code | County |
|---|---|
| 50428 | Cerro Gordo 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Clear Lake codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Clear Lake. 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 Clear Lake ZIP code begins 504. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 57 ZIP codes, so Clear Lake accounts for 2% of it.
Every Iowa ZIP prefix and the region it covers →
Area codes covering Clear Lake
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 Clear Lake occupies.
Clear Lake Iowa area codes in full →
Where Clear Lake's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Clear Lake
| City | Distance | ZIP codes |
|---|---|---|
| Ventura Iowa ZIP codes | 4.7 mi | 1 ZIP code |
| Mason City Iowa ZIP codes | 8.8 mi | 2 ZIP codes |
| Fertile Iowa ZIP codes | 9.1 mi | 1 ZIP code |
| Hanlontown Iowa ZIP codes | 10 mi | 1 ZIP code |
| Swaledale Iowa ZIP codes | 11 mi | 1 ZIP code |
| Garner Iowa ZIP codes | 12 mi | 1 ZIP code |
| Thornton Iowa ZIP codes | 13 mi | 1 ZIP code |
| Manly Iowa ZIP codes | 14 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.