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Spencer Iowa ZIP Codes

Spencer holds a single ZIP code.

Every ZIP code in Spencer

The complete list of Spencer, Iowa ZIP codes with the county each falls in.
ZIP codeCounty
51301Clay 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Spencer codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Spencer. 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 Spencer ZIP code begins 513. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 23 ZIP codes, so Spencer accounts for 4% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Spencer

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 Spencer occupies.

Spencer Iowa area codes in full →

Where Spencer's ZIP codes sit

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

Cities near Spencer

The closest places to Spencer with their own ZIP code list, nearest first.
CityDistanceZIP codes
Fostoria Iowa ZIP codes6.6 mi1 ZIP code
Dickens Iowa ZIP codes6.6 mi1 ZIP code
Everly Iowa ZIP codes8.4 mi1 ZIP code
Royal Iowa ZIP codes8.7 mi1 ZIP code
Greenville Iowa ZIP codes9.0 mi1 ZIP code
Gillett Grove Iowa ZIP codes11 mi1 ZIP code
Ruthven Iowa ZIP codes13 mi1 ZIP code
Milford Iowa ZIP codes14 mi1 ZIP code

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