Home > KS > Butler County > Cassoday > Zip 66842

Zip Code 66842 — Cassoday, KS

66842 is a ZIP Code associated with Cassoday, KS, located within Butler. 66842 ranks #11 out of 16 ZIP codes in Butler County by population (and #465 out of 704 in KS). The area supports an estimated population of 508 residents across Data Pending housing units, with a population density of 1.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.023600, -96.658360)

Data MetricLocal Statistic
Postal / Zip Code66842
Primary CityCassoday
State / ProvinceKS
CountyButler
Total Population508
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1.6 people/sq mi
TimezoneAmerica/Chicago

How 66842 Compares

MetricZIP 66842Butler CountyKS State Average
Population50868,780 (Total)2,947,026 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density1.6 /sq mi----
County Pop Rank#11 of 16----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 66862Matfield Green10.7 mi68N/A
Zip 66840Burns12.1 mi474N/A
Zip 67132Rosalia12.6 mi385N/A
Zip 67042El Dorado14.3 mi16,978N/A
Zip 66843Cedar Point14.9 mi105N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →