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Zip Code 68776 — South Sioux City, NE

ZIP Code 68776 is associated with South Sioux City, NE, in Dakota County. The listed population estimate is 15,373; estimated density is 267.6 people per square mile. Among records with population estimates, it ranks #1 of 5 in Dakota County and #45 of 582 in NE.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.460100, -96.444240)

Data MetricLocal Statistic
Postal / Zip Code68776
Primary CitySouth Sioux City
State / ProvinceNE
CountyDakota
Total Population15,373
Population Density267.6 people/sq mi
TimezoneAmerica/Chicago

How 68776 Compares

MetricZIP 68776Dakota County recordsNE records
Population estimate15,37320,912 (sum)1,979,558 (sum)
Population Density267.6 /sq mi----
County population rank#1 of 5----
State population rank#45 of 582----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in NE

ZIP CodeCityDistancePopulation estimate
ZIP 68731Dakota City4.0 mi3,469
ZIP 68743Jackson9.3 mi814
ZIP 68030Homer9.8 mi671
ZIP 68741Hubbard10.4 mi585
ZIP 68785Waterbury14.4 mi234

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →