CHICAGO — Illinois congressman Jesse Jackson Jr., who has been on a hushed medical leave for more than three months, has put his home in Washington on the market for $2.5 million to help pay for health care costs, an aide said Wednesday.

Jackson’s medical treatment for bipolar disorder and gastrointestinal issues included several weeks of hospitalization at the Mayo Clinic in Rochester, Minn. The Chicago Democrat returned to his family at their Washington home earlier this month, but his staff has given no indication of when he’ll return to work.

‘‘Like millions of Americans, Congressman Jackson and Mrs. Jackson are grappling with soaring health care costs and are selling their residence to help defray costs of their obligations,’’ Jackson spokesman Rick Bryant said in an e-mailed statement.

Jackson put the Victorian-style town house on the market Sept. 8. Online listings for the home say it was built in 1921, has four bedrooms, five fireplaces, a gourmet kitchen, and a rooftop deck with a Jacuzzi.