The town of Greenville is located in the county of Piscataquis. It covers a total area of 119.48 sq. km. The economy of the city revolves around industries involved in aviation, automotive, construction, apparel, commercial printing, health, hotel, insurance, real estate, tourism and oil and lubrication. Commercial spaces are utilized by parks, restaurants, service stations, marinas and garden centers, contributing to the economy in a positive way.