ZIP Codes of Osborne County, KS

Population & People
Population & People
Total Population
3,568
Household Income
Household Income
Median Income
$75,222
Housing
Housing
Total Housing Units
2,043
Business & Economy
Business & Economy
Total Businesses
135
Employment
Employment
Employment Rate
64.63%
Education
Education
Bachelor's Degree+
24.87%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 5 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:785
Timezone:Central (GMT -06:00)
Local Time:2:12:14 PM
Population:3,568 [See All]
FIPS:20141
Land Area:889 sq mi
Water Area:2 sq mi
Coordinates:39.4212, -98.8014
Quick Link:
https://www.zip-codes.com/county/ks-osborne.asp
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Kansas's #76 most populous county
3,568 residents across 5 ZIPs — #76 of 106 Kansas counties.

Standout ZIPs in this County


Most Populous
Osborne · 1,724 people
48.3% of county total
Highest Income
Alton · $102,933 median
1.4× county average
Largest Land Area
Osborne · 259.1 sq mi
Spans the most ground
Fastest Growth
Osborne · 2.1% (10-yr)
1,689 → 1,724 residents
Most Educated
Osborne · 20.9% bachelor's+
250 of 1,196 adults 25+

Things worth knowing about Osborne County


3,568 residents live across 5 ZIPs covering 889 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 3,881 to 3,568 from 2014 to 2024 — a -8.1% change. 2 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 67623 (Alton, $102,933 median) and poorest ZIP 67651 (Natoma, $63,125) are 17.7 miles apart — a 1.6× income gap across local geography.

Median home values vary 2.7× across this county — from $38,400 in 67651 (Natoma) to $103,200 in 67437 (Downs).

Density varies across the county — from 1 people/sq mi in 67474 (Portis) to 7 in 67437 (Downs).

Educational attainment ranges from 12.9% bachelor's+ in 67623 (Alton) to 32.7% in 67437 (Downs) — the breadth of educational profiles across the area.

Within Kansas, this is the #76 most populous of 106 counties and ranks #26 for median household income .

Weighted by population, the typical household earns about $67,219 across the county — reflecting what a typical resident sees, not a simple ZIP average.

24.9% of adults age 25+ hold a bachelor's degree or higher (636 of 2,557 reporting).

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

Stories about Osborne 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
889
square miles
Avg density
4.0
people per sq mi
Population
3,568
across 5 ZIPs
Osborne
259.1 sq mi
1,724 residents
Natoma
213.7 sq mi
535 residents
Alton
167.6 sq mi
228 residents

Population decline

Osborne County lost 8.1% of residents between 2014 and 2024. ZIPs that shed the largest share:

Downs
-23.1%
1,263 → 971 residents

All ZIP Codes in Osborne County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
67473OsborneStandard1,724$64,531259.12.1%
67437DownsStandard971$64,271141.8-23.1%
67651NatomaStandard535$63,125213.717.8%
67623AltonStandard228$102,933167.6-12.0%
67474PortisStandard110$81,250106.4-49.1%

Adjacent & Nearby Counties