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Colby Kansas ZIP Codes

Colby holds a single ZIP code.

Every ZIP code in Colby

The complete list of Colby, Kansas ZIP codes with the county each falls in.
ZIP codeCounty
67701Thomas 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Colby codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Colby. 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 Colby ZIP code begins 677. Those first three digits identify the sectional center facility that processes mail for this part of Kansas. Statewide that range covers 28 ZIP codes, so Colby accounts for 4% of it.

Every Kansas ZIP prefix and the region it covers →

Area codes covering Colby

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 Colby occupies.

Colby Kansas area codes in full →

Where Colby's ZIP codes sit

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

Cities near Colby

The closest places to Colby with their own ZIP code list, nearest first.
CityDistanceZIP codes
Gem Kansas ZIP codes8.4 mi1 ZIP code
Rexford Kansas ZIP codes17 mi1 ZIP code
Brewster Kansas ZIP codes18 mi1 ZIP code
Oakley Kansas ZIP codes21 mi1 ZIP code
Winona Kansas ZIP codes25 mi1 ZIP code
Selden Kansas ZIP codes28 mi1 ZIP code
Grinnell Kansas ZIP codes28 mi1 ZIP code
Atwood Kansas ZIP codes29 mi1 ZIP code

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