ZIP Codes of Knox County, NE

Population & People
Population & People
Total Population
9,067
Household Income
Household Income
Median Income
$72,446
Housing
Housing
Total Housing Units
4,820
Business & Economy
Business & Economy
Total Businesses
254
Employment
Employment
Employment Rate
60.40%
Education
Education
Bachelor's Degree+
18.97%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 8 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:8 ZIP Codes (8 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:402 / 531
Timezone:Central (GMT -06:00)
Local Time:2:13:06 PM
Population:9,067 [See All]
FIPS:31107
Land Area:1,183 sq mi
Water Area:32 sq mi
Coordinates:42.6233, -97.8594
Quick Link:
https://www.zip-codes.com/county/ne-knox.asp
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Nebraska's #30 most populous county
9,067 residents across 8 ZIPs — #30 of 107 Nebraska counties.

Standout ZIPs in this County


Most Populous
Crofton · 2,156 people
23.8% of county total
Highest Income
Center · $104,167 median
1.4× county average
Largest Land Area
Bloomfield · 238.5 sq mi
Spans the most ground
Fastest Growth
Crofton · 9.1% (10-yr)
1,976 → 2,156 residents
Most Educated
Crofton · 22.8% bachelor's+
320 of 1,404 adults 25+

Things worth knowing about Knox County


9,067 residents live across 8 ZIPs covering 1,183 sq mi, served by 8 distinct USPS-recognized cities.

Population moved from 9,312 to 9,067 from 2014 to 2024 — a -2.6% change. 3 ZIPs gained residents, 5 lost.

The county's wealthiest ZIP 68724 (Center, $104,167 median) and poorest ZIP 68783 (Verdigre, $46,328) are 12.7 miles apart — a 2.2× income gap across local geography.

Median home values vary 2.2× across this county — from $94,300 in 68760 (Niobrara) to $208,600 in 68730 (Crofton).

Density varies across the county — from 3 people/sq mi in 68789 (Winnetoon) to 14 in 68730 (Crofton).

Educational attainment ranges from 13.8% bachelor's+ in 68729 (Creighton) to 27.3% in 68789 (Winnetoon) — the breadth of educational profiles across the area.

Within Nebraska, this is the #30 most populous of 107 counties and ranks #53 for median household income .

Weighted by population, the typical household earns about $66,519 across the county — reflecting what a typical resident sees, not a simple ZIP average.

19.0% of adults age 25+ hold a bachelor's degree or higher (1,177 of 6,203 reporting).

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

Stories about Knox 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
1,183
square miles
Avg density
7.7
people per sq mi
Population
9,067
across 8 ZIPs
Bloomfield
238.5 sq mi
1,603 residents
Verdigre
214.0 sq mi
964 residents
Niobrara
207.0 sq mi
1,126 residents

All ZIP Codes in Knox County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
68730CroftonStandard2,156$76,944156.69.1%
68729CreightonStandard1,735$63,292162.3-6.0%
68718BloomfieldStandard1,603$60,250238.5-7.1%
68760NiobraraStandard1,126$53,409207.0-18.5%
68786WausaStandard1,080$78,750120.01.0%
68783VerdigreStandard964$46,328214.0-1.5%
68724CenterStandard276$104,16742.374.7%
68789WinnetoonStandard127$96,42942.6-28.2%

Adjacent & Nearby Counties