ZIP Code 66066

66066 is one of Kansas's ZIP codes, delivering to addresses in Oskaloosa, Jefferson County.

City: Oskaloosa
County: Jefferson County
State: Kansas
Prefix: 660xx

Where this code sits

66066 is part of the 660xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Oskaloosa.

Oskaloosa Kansas ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 66066 delivers to without sharing its boundary.

785 Area code 785

ZIP codes nearest 66066

The ZIP codes whose reference points sit closest to 66066.
ZIP code	Distance	Delivers to
ZIP code 66054	6.1 mi	Mc Louth, KS
ZIP code 66070	6.8 mi	Ozawkie, KS
ZIP code 66097	7.9 mi	Winchester, KS
ZIP code 66073	9.4 mi	Perry, KS
ZIP code 66088	12 mi	Valley Falls, KS
ZIP code 66512	13 mi	Meriden, KS
ZIP code 66060	13 mi	Nortonville, KS
ZIP code 66086	14 mi	Tonganoxie, 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 66066, plotted from its record coordinates.

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

Scope ZIP code 66066. 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.