ZIP Codes of Republic County, KS

Population & People
Population & People
Total Population
4,384
Household Income
Household Income
Median Income
$55,274
Housing
Housing
Total Housing Units
2,582
Business & Economy
Business & Economy
Total Businesses
172
Employment
Employment
Employment Rate
59.93%
Education
Education
Bachelor's Degree+
21.50%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 9 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:9 ZIP Codes (8 Standard, 1 PO Box, 0 Unique) [See All]
Area Code:785
Timezone:Central (GMT -06:00)
Local Time:11:53:32 PM
Population:4,384 [See All]
FIPS:20157
Land Area:679 sq mi
Water Area:2 sq mi
Coordinates:39.8271, -97.6334
Quick Link:
https://www.zip-codes.com/county/ks-republic.asp
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Striking education divide
Bachelor's share spans 6.7% to 41.4% — a 35-point gap.

Standout ZIPs in this County


Most Populous
Belleville · 2,413 people
55.0% of county total
Highest Income
Republic · $73,500 median
1.3× county average
Largest Land Area
Belleville · 151.0 sq mi
Spans the most ground
Fastest Growth
Belleville · 9.7% (10-yr)
2,199 → 2,413 residents
Most Educated
Belleville · 16.4% bachelor's+
268 of 1,638 adults 25+

Things worth knowing about Republic County


4,384 residents live across 9 ZIPs covering 679 sq mi, served by 9 distinct USPS-recognized cities.

Population moved from 4,718 to 4,378 from 2014 to 2024 — a -7.2% change. 2 ZIPs gained residents, 6 lost.

The county's wealthiest ZIP 66964 (Republic, $73,500 median) and poorest ZIP 66930 (Agenda, $43,000) are 22.7 miles apart — a 1.7× income gap across local geography.

Median home values vary 6.8× across this county — from $21,700 in 66964 (Republic) to $146,900 in 66939 (Courtland).

Density varies across the county — from 2 people/sq mi in 66960 (Narka) to 16 in 66935 (Belleville).

Educational attainment ranges from 6.7% bachelor's+ in 66930 (Agenda) to 41.4% in 66940 (Cuba) — the breadth of educational profiles across the area.

Within Kansas, this is the #70 most populous of 106 counties and ranks #104 for median household income .

Weighted by population, the typical household earns about $55,673 across the county — reflecting what a typical resident sees, not a simple ZIP average.

21.5% of adults age 25+ hold a bachelor's degree or higher (665 of 3,093 reporting).

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

Stories about Republic 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
679
square miles
Avg density
6.5
people per sq mi
Population
4,384
across 9 ZIPs
Belleville
151.0 sq mi
2,413 residents
Courtland
105.0 sq mi
335 residents
Scandia
102.1 sq mi
577 residents

Population decline

Republic County lost 7.1% of residents between 2014 and 2024. ZIPs that shed the largest share:

Courtland
-49.9%
668 → 335 residents

All ZIP Codes in Republic County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
66935BellevilleStandard2,413$56,014151.09.7%
66966ScandiaStandard577$51,125102.1-8.8%
66959MundenStandard339$54,75054.414.9%
66939CourtlandStandard335$69,167105.0-49.9%
66940CubaStandard283$44,43264.6-13.7%
66964RepublicStandard175$73,50071.3-6.9%
66930AgendaStandard131$43,00063.5-49.0%
66960NarkaStandard125$50,20865.6-16.7%
66961NorwayPO Box61.3

Adjacent & Nearby Counties