| ZIP Codes: | 6 ZIP Codes (6 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 402 / 531 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:05 PM |
| Population: | 22,013 [See All] |
| FIPS: | 31043 |
| CBSA: | Sioux City, IA-NE-SD |
| Land Area: | 314 sq mi |
| Water Area: | 3 sq mi |
| Coordinates: | 42.3819, -96.5418 |
| Quick Link: |
22,013 residents live across 6 ZIPs covering 314 sq mi, served by 6 distinct USPS-recognized cities.
Population moved from 21,548 to 22,013 from 2014 to 2024 — a +2.2% change. 3 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 68731 (Dakota City, $79,924 median) and poorest ZIP 68733 (Emerson, $64,479) are 14.3 miles apart — a 1.2× income gap across local geography.
Median home values vary 1.6× across this county — from $132,600 in 68733 (Emerson) to $214,200 in 68741 (Hubbard).
Density varies 76× across the county — from 10 people/sq mi in 68741 (Hubbard) to 766 in 68776 (South Sioux City).
Educational attainment ranges from 11.6% bachelor's+ in 68731 (Dakota City) to 23.0% in 68743 (Jackson) — the breadth of educational profiles across the area.
Within Nebraska, this is the #15 most populous of 107 counties and ranks #45 for median household income .
Weighted by population, the typical household earns about $70,928 across the county — reflecting what a typical resident sees, not a simple ZIP average.
14.6% of adults age 25+ hold a bachelor's degree or higher (1,971 of 13,479 reporting).
6 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 68776 | South Sioux City | Standard | 15,373 | $68,750 | 20.1 | 3.2% |
| 68731 | Dakota City | Standard | 3,469 | $79,924 | 38.2 | 13.5% |
| 68733 | Emerson | Standard | 1,101 | $64,479 | 91.0 | -13.1% |
| 68743 | Jackson | Standard | 814 | $71,667 | 55.9 | 11.5% |
| 68030 | Homer | Standard | 671 | $76,442 | 51.0 | -12.5% |
| 68741 | Hubbard | Standard | 585 | $79,583 | 58.3 | -29.3% |