ZIP Code 57078

57078 is one of South Dakota's ZIP codes, delivering to addresses in Yankton, Yankton County.

City: Yankton
County: Yankton County
State: South Dakota
Prefix: 570xx

Where this code sits

57078 is part of the 570xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Yankton.

Yankton South Dakota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 57078 delivers to without sharing its boundary.

605 Area code 605

ZIP codes nearest 57078

The ZIP codes whose reference points sit closest to 57078.
ZIP code	Distance	Delivers to
ZIP code 68774	7.2 mi	Saint Helena, NE
ZIP code 57046	7.7 mi	Mission Hill, SD
ZIP code 57067	9.4 mi	Utica, SD
ZIP code 68736	11 mi	Fordyce, NE
ZIP code 57031	11 mi	Gayville, SD
ZIP code 57072	12 mi	Volin, SD
ZIP code 68730	12 mi	Crofton, NE
ZIP code 57040	15 mi	Lesterville, SD

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 57078, plotted from its record coordinates.

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

Scope ZIP code 57078. 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.