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Delmar Iowa ZIP Codes

Delmar holds a single ZIP code.

Every ZIP code in Delmar

The complete list of Delmar, Iowa ZIP codes with the county each falls in.
ZIP codeCounty
52037Clinton 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Delmar codes above are listed without a column we would have to invent.

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

Every Iowa ZIP prefix and the region it covers →

Area codes covering Delmar

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 Delmar occupies.

Delmar Iowa area codes in full →

Where Delmar's ZIP codes sit

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

Cities near Delmar

The closest places to Delmar with their own ZIP code list, nearest first.
CityDistanceZIP codes
Maquoketa Iowa ZIP codes5.1 mi1 ZIP code
Welton Iowa ZIP codes6.5 mi1 ZIP code
Charlotte Iowa ZIP codes7.6 mi1 ZIP code
Spragueville Iowa ZIP codes10 mi1 ZIP code
Andrew Iowa ZIP codes11 mi1 ZIP code
Lost Nation Iowa ZIP codes11 mi1 ZIP code
Preston Iowa ZIP codes11 mi1 ZIP code
Goose Lake Iowa ZIP codes12 mi1 ZIP code

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