ZIP Code 66854

66854 is one of Kansas's ZIP codes, delivering to addresses in Hartford, Lyon County.

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

Where this code sits

66854 is part of the 668xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hartford.

Hartford Kansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 66854 delivers to without sharing its boundary.

620 Area code 620

ZIP codes nearest 66854

The ZIP codes whose reference points sit closest to 66854.
ZIP code	Distance	Delivers to
ZIP code 66864	7.8 mi	Neosho Rapids, KS
ZIP code 66865	10 mi	Olpe, KS
ZIP code 66855	12 mi	Lamont, KS
ZIP code 66860	13 mi	Madison, KS
ZIP code 66856	13 mi	Lebo, KS
ZIP code 66801	14 mi	Emporia, KS
ZIP code 66852	14 mi	Gridley, KS
ZIP code 66839	15 mi	Burlington, 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 66854, plotted from its record coordinates.

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

Scope ZIP code 66854. 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.