S Berwick Real EstateS Berwick real estate listings include condos, townhomes, and single family homes for sale. Commercial properties are also available. If you see a property you’re interested in, contact a S Berwick real estate agent to arrange a tour today! S Berwick, Maine has a population of 3,681. The median household income in S Berwick, Maine is $88,438. The median household income for the surrounding county is $62,618 compared to the national median of $57,652. The median age of people living in S Berwick is 40.6 years. S Berwick WeatherThe average high temperature in July is 81.5 degrees, with an average low temperature in January of 14.1 degrees. The average rainfall is approximately 49.3 inches per year, with 54 inches of snow per year. Nearby Homes for Sale |