ZIP Code 68776

68776 is one of Nebraska's ZIP codes, delivering to addresses in South Sioux City, Dakota County.

City: South Sioux City
County: Dakota County
State: Nebraska
Prefix: 687xx

Where this code sits

68776 is part of the 687xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to South Sioux City.

South Sioux City Nebraska ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 68776 delivers to without sharing its boundary.

ZIP codes nearest 68776

The ZIP codes whose reference points sit closest to 68776.
ZIP code	Distance	Delivers to
ZIP code 51101	2.3 mi	Sioux City, IA
ZIP code 51103	2.9 mi	Sioux City, IA
ZIP code 51105	3.2 mi	Sioux City, IA
ZIP code 51106	3.3 mi	Sioux City, IA
ZIP code 51104	4.2 mi	Sioux City, IA
ZIP code 51111	4.6 mi	Sioux City, IA
ZIP code 51109	4.8 mi	Sioux City, IA
ZIP code 51054	5.5 mi	Sergeant Bluff, IA

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 68776, plotted from its record coordinates.

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

Scope ZIP code 68776. 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.