Islesboro Real EstateIslesboro is located in Maine. Islesboro, Maine has a population of 600. Islesboro is more family-centric than the surrounding county with 28.81% of the households containing married families with children. The county average for households married with children is 23.46%. The median household income in Islesboro, Maine is $67,813. The median household income for the surrounding county is $59,880 compared to the national median of $69,021. The median age of people living in Islesboro is 62.3 years. Islesboro WeatherThe average high temperature in July is 77 degrees, with an average low temperature in January of 7.7 degrees. The average rainfall is approximately 48.7 inches per year, with 59 inches of snow per year. Islesboro MapReal estate near IslesboroNearby CitiesNearby Cities Homes for Sale |