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Oswego Kansas ZIP Codes

Oswego holds a single ZIP code.

Every ZIP code in Oswego

The complete list of Oswego, Kansas ZIP codes with the county each falls in.
ZIP codeCounty
67356Labette 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Oswego codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Oswego. 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 Oswego ZIP code begins 673. Those first three digits identify the sectional center facility that processes mail for this part of Kansas. Statewide that range covers 27 ZIP codes, so Oswego accounts for 4% of it.

Every Kansas ZIP prefix and the region it covers →

Area codes covering Oswego

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 Oswego occupies.

Oswego Kansas area codes in full →

Where Oswego's ZIP codes sit

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

Cities near Oswego

The closest places to Oswego with their own ZIP code list, nearest first.
CityDistanceZIP codes
Chetopa Kansas ZIP codes9.1 mi1 ZIP code
Bartlett Kansas ZIP codes9.5 mi1 ZIP code
Altamont Kansas ZIP codes10 mi1 ZIP code
West Mineral Kansas ZIP codes13 mi1 ZIP code
Parsons Kansas ZIP codes14 mi1 ZIP code
Columbus Kansas ZIP codes15 mi1 ZIP code
Edna Kansas ZIP codes16 mi1 ZIP code
Mound Valley Kansas ZIP codes16 mi1 ZIP code

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