Devon is a village on the eastern edge of Chester County. Most of it is in Easttown Township, Chester County. A little bit is in Radnor Township, Delaware County. A bit more is in Tredyffrin Township, Chester County. Which church are you interested in? In a message dated 10/26/00 8:48:26 PM Eastern Daylight Time, mouserwitz@mediaone.net writes: << can someone tell me where Devon Pa is on there site it states chester co In the Chester co site on rootweb it is not listed but the church I am looking for is listed on the Chester co site >>