ZIP Codes of Sioux County, NE

Population & People
Population & People
Total Population
480
Household Income
Household Income
Median Income
$62,083
Housing
Housing
Total Housing Units
353
Business & Economy
Business & Economy
Total Businesses
11
Employment
Employment
Employment Rate
56.14%
Education
Education
Bachelor's Degree+
24.50%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 1 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:1 ZIP Codes (1 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:308
Timezone:Mountain (GMT -07:00)
Local Time:2:13:08 PM
Population:480 [See All]
FIPS:31165
Land Area:1,054 sq mi
Water Area:1 sq mi
Coordinates:42.5859, -103.8942
Quick Link:
https://www.zip-codes.com/county/ne-sioux.asp
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Notable population decline
Lost 21.2% of residents since 2014.

Standout ZIPs in this County


Most Populous
Harrison · 480 people
100.0% of county total
Highest Income
Harrison · $62,083 median
1.0× county average
Largest Land Area
Harrison · 1,054.3 sq mi
Spans the most ground
Fastest Growth
— growth not calculable
Most Educated
— no education data

Things worth knowing about Sioux County


480 residents live across 1 ZIPs covering 1,054 sq mi, served by 1 distinct USPS-recognized cities.

Population moved from 609 to 480 from 2014 to 2024 — a -21.2% change. 0 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 69346 (Harrison, $62,083 median) and poorest ZIP 69346 (Harrison, $62,083) are 0.0 miles apart — a 1.0× income gap across local geography.

Within Nebraska, this is the #98 most populous of 107 counties and ranks #82 for median household income .

Weighted by population, the typical household earns about $62,083 across the county — reflecting what a typical resident sees, not a simple ZIP average.

24.5% of adults age 25+ hold a bachelor's degree or higher (85 of 347 reporting).

1 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Sioux County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
1,054
square miles
Avg density
0.5
people per sq mi
Population
480
across 1 ZIPs
Harrison
1,054.3 sq mi
480 residents

Population decline

Sioux County lost 21.2% of residents between 2014 and 2024. ZIPs that shed the largest share:

Harrison
-21.2%
609 → 480 residents

All ZIP Codes in Sioux County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
69346HarrisonStandard480$62,0831,054.3-21.2%

Adjacent & Nearby Counties