Lawrenceville is a city in and the county seat of Gwinnett County, Georgia, United States. It is a suburb of Atlanta, located approximately 30 mileā¦Lawrenceville is a city in and the county seat of Gwinnett County, Georgia, United States. It is a suburb of Atlanta, located approximately 30 miles northeast of downtown. It was incorporated on December 15, 1821. As of the 2020 census, the population of Lawrenceville was 30,629.