Judson is an unincorporated community in Gregg County, Texas, United States. According to the Handbook of Texas, the community had an estimated population of 650 in 2000. It is part of the Longview, Texas Metropolitan Statistical Area. Judson is located along FM 502 in northern Gregg County, approximately several miles north of Longview. Although it is unincorporated, Judson has a post office, with the ZIP code of 75660.. Public education in the community is provided by the Longview Independent School District.