Sophomore usually refers to the second year of college. According to the normal academic system, the undergraduate course is usually four years, so the sophomore year is the second year of the university. Students usually enter the university after graduating from high school, so the age of sophomores is about 19 to 20 years old, and the specific age may be different. However, it should be noted that age will be affected by many factors, such as early admission or late admission, and everyone's specific situation may be different. I hope I can help you.