Business services in Sumner, Maine, the US. Business services locations in Sumner, Maine. Find the nearest business services locations, near you. All types of business services School Popular business services in Sumner West Sumner Christian School School +1 207-388-2716 854 Main Street, Sumner, Maine 04292 Write a review Phone Directions Hartford-Sumner Elementary School School +1 207-388-2681 145 Main Street, Sumner, Maine 04292 Write a review Phone Directions