ZIP code · Cassoday · Kansas · United States

ZIP code 66842 — Cassoday

ZIP code 66842 serves Cassoday, Kansas.

Postal code
66842
Single source Value from one source, not cross-checked.
City
Cassoday
County
Butler FIPS 20015
State
Kansas
Country
United States
Coordinates
38.0298, -96.6746 — precision precise (locality)
View on OpenStreetMap
Population
432 (ZCTA, ACS 5-year)
Population density
4 / sq mi
Land area
119.4 sq mi (309.4 km²) (ZCTA, ACS 5-year)
Median household income
$72,750
Per-capita income
$67,647
Median age
47.1
Households
161
Housing units
257
Median home value
$120,700
Median gross rent
$1,063 / month
Congressional district
KS-4 (119th Congress)
USDA hardiness zone
6b (-5 to 0 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Chicago (UTC−6 / UTC−5 DST)
Area code
620
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 90°F), coldest Jan (avg low 19°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F414656677584908981695644
Avg low °F192332425363686657453223
Precip in0.81.42.33.85.35.64.43.83.53.02.01.2

NOAA 1991–2020 climate normals from the nearest station: CASSODAY 2SE (3.9 mi) · NOAA NCEI

Places in ZIP 66842

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page