town (parish) and seaport, Suffolk Coastal district, administrative and historic county of Suffolk, England. Although situated on the east coast, the town in fact faces south and has a frontage to the estuary of the River Orwell opposite Harwich. Felixstowe is a busy, modern container port. It is the nearest British port to Europoort and Rotterdam, Netherlands, and has grown rapidly. It is also a seaside resort and yachting centre. Pop. (2001) 29,349.