Colfax Iowa ZIP Codes

Colfax holds a single ZIP code.

Every ZIP code in Colfax

The complete list of Colfax, Iowa ZIP codes with the county each falls in.
ZIP code	County
50054	Jasper 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Colfax codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Colfax. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Colfax ZIP code begins 500. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 68 ZIP codes, so Colfax accounts for 1% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Colfax

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 Colfax occupies.

515 Area code 515

Colfax Iowa area codes in full →

Where Colfax's ZIP codes sit

Each point is one Colfax ZIP code, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Cities near Colfax

The closest places to Colfax with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Prairie City Iowa ZIP codes	5.8 mi	1 ZIP code
Mingo Iowa ZIP codes	6.4 mi	1 ZIP code
Mitchellville Iowa ZIP codes	6.7 mi	1 ZIP code
Newton Iowa ZIP codes	10 mi	1 ZIP code
Baxter Iowa ZIP codes	11 mi	1 ZIP code
Bondurant Iowa ZIP codes	11 mi	1 ZIP code
Altoona Iowa ZIP codes	13 mi	1 ZIP code
Runnells Iowa ZIP codes	13 mi	1 ZIP code

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