Jacksonville Real EstateJacksonville 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 Jacksonville real estate agent to arrange a tour today! Jacksonville, Maryland has a population of 3,713. The median household income in Jacksonville, Maryland is $124,792. The median household income for the surrounding county is $71,810 compared to the national median of $57,652. The median age of people living in Jacksonville is 45.4 years. Jacksonville WeatherThe average high temperature in July is 89.3 degrees, with an average low temperature in January of 26 degrees. The average rainfall is approximately 44.4 inches per year, with 28.6 inches of snow per year. Nearby Homes for Sale |