Fairfax Iowa ZIP Codes

Fairfax holds a single ZIP code.

Every ZIP code in Fairfax

The complete list of Fairfax, Iowa ZIP codes with the county each falls in.
ZIP code	County
52228	Linn 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Fairfax codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Fairfax. 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 Fairfax ZIP code begins 522. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 50 ZIP codes, so Fairfax accounts for 2% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Fairfax

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 Fairfax occupies.

319 Area code 319

Fairfax Iowa area codes in full →

Where Fairfax's ZIP codes sit

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

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

Cities near Fairfax

The closest places to Fairfax with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Walford Iowa ZIP codes	4.2 mi	1 ZIP code
Cedar Rapids Iowa ZIP codes	5.7 mi	14 ZIP codes
Atkins Iowa ZIP codes	6.3 mi	1 ZIP code
Swisher Iowa ZIP codes	7.0 mi	1 ZIP code
Norway Iowa ZIP codes	7.6 mi	1 ZIP code
Palo Iowa ZIP codes	9.6 mi	1 ZIP code
Hiawatha Iowa ZIP codes	10 mi	1 ZIP code
Ely Iowa ZIP codes	10 mi	1 ZIP code

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