ZIP Code 66865

66865 is one of Kansas's ZIP codes, delivering to addresses in Olpe, Lyon County.

City: Olpe
County: Lyon County
State: Kansas
Prefix: 668xx

Where this code sits

66865 is part of the 668xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Olpe.

Olpe Kansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 66865 delivers to without sharing its boundary.

620 Area code 620

ZIP codes nearest 66865

The ZIP codes whose reference points sit closest to 66865.
ZIP code	Distance	Delivers to
ZIP code 66860	9.7 mi	Madison, KS
ZIP code 66854	10 mi	Hartford, KS
ZIP code 66801	11 mi	Emporia, KS
ZIP code 66864	13 mi	Neosho Rapids, KS
ZIP code 66855	13 mi	Lamont, KS
ZIP code 66835	18 mi	Americus, KS
ZIP code 66853	19 mi	Hamilton, KS
ZIP code 66852	20 mi	Gridley, KS

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 66865, plotted from its record coordinates.

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

Scope ZIP code 66865. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.