Stephensport is an unincorporated community in Breckinridge County, Kentucky, United States. Stephensport is located on the Ohio River along Kentucky Route 144, 9.8 miles north-northwest of Hardinsburg. Stephensport has a post office with ZIP code 40170, which opened on December 12, 1825.The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Stephensport has a humid subtropical climate, abbreviated "Cfa" on climate maps.Richard Stephens served as a private in the Continental Army for 3 years during the American Revolution. For his service to George Washington, Richard Stephens, in February 1784, then 29 years old, accepted a 100,000 land grant on the Ohio River in Kentucky. Over time, Richard Stephens added more land to his estate.