About Allen, Kansas
Allen is a city in Lyon County, Kansas, United States. As of the 2010 census, the city population was 177.
Allen is located at 38°39′23″N 96°10′14″W / 38.65639°N 96.17056°W / 38.65639; -96.17056 (38.656472, -96.170511). According to the United States Census Bureau, the city has a total area of 0.27 square miles (0.70 km2), all of it land....
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