Longview is a city in, and county seat of, Gregg County, Texas, United States. Longview is located in East Texas, where Interstate 20 and U.S. highways 80 and 259 converge just north of the Sabine River. According to the 2020 U.S. census, the city had a population of 81,638. Longview is the principal city of the Longview metropolitan statistical area, comprising Gregg, Upshur, and Rusk counties. The population of the metropolitan area as of 2021 census estimates was 287,858.