Haddam is a city in Washington County, Kansas, home to about 118 people across 0.3 square miles. Its ZIP code is 66944.
Mostly Haddam
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| Nearest major airport | Eppley Airfield (OMA)125 miles away |
|---|---|
| Closer regional airport | Manhattan Regional Airport (MHK)60 miles away |
| Nearest city of 250,000+ | Lincoln, NE74 miles away |
| Nearest city of 1 million+ | Dallas, TX488 miles away |
Straight-line distances from the center of Haddam; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Haddam had 110 residents in the 2020 census, down 35% since 2000.
It’s the 525th largest of 721 towns in Kansas by population.
Washington County grew from 21,963 residents in 1900 to 5,530 in 2020.
Washington County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 90°F in summer, and winter lows average 15°F. About 32.3 inches of rain and melted snow fall in a typical year, with about 14 inches of snow.
Source: NOAA 1991–2020 climate normals, Washington, KS weather station (14 miles away).
1,372 jobs at 199 businesses in Washington County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.