Codes.zone

Cascade Iowa ZIP Codes

Cascade holds a single ZIP code.

Every ZIP code in Cascade

The complete list of Cascade, Iowa ZIP codes with the county each falls in.
ZIP codeCounty
52033Dubuque 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Cascade codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Cascade. 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 Cascade 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 Cascade accounts for 2% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Cascade

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 Cascade occupies.

Cascade Iowa area codes in full →

Where Cascade's ZIP codes sit

Each point is one Cascade ZIP code, plotted from its record coordinates.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Cities near Cascade

The closest places to Cascade with their own ZIP code list, nearest first.
CityDistanceZIP codes
Bernard Iowa ZIP codes8.9 mi1 ZIP code
Worthington Iowa ZIP codes8.9 mi1 ZIP code
Farley Iowa ZIP codes9.8 mi1 ZIP code
Monticello Iowa ZIP codes11 mi1 ZIP code
Epworth Iowa ZIP codes11 mi1 ZIP code
Hopkinton Iowa ZIP codes13 mi1 ZIP code
Peosta Iowa ZIP codes13 mi1 ZIP code
Onslow Iowa ZIP codes14 mi1 ZIP code

Straight-line distance between place reference points, not driving distance.