Marshall, TX Marshall is a city in Harrison County, Texas. It has a population of 24,531 and offers many amenities such as the Wonderland of the Americas Shopping Center and recreational activities like bird watching at Caddo Lake State Park or visiting one of the six city parks. Additionally, Marshall provides quality education options through its public schools like Price T. Young Middle School and private institutions such as East Texas Baptist University. With its abundance of shopping opportunities, recreational activities, and educational offerings, Marshall is an ideal place to visit or call home.