what is zip code of lawrenceville
Sponsored Topics. Lawrenceville is a city in and the county seat of Gwinnett County, Georgia, in the United States. The Census Bureau estimates the 2008 population at 29,258. Lawrenceville has six ZIP codes (30042-30046, 30049); it is part of the 678/770/404 telephone area code, which is used throughout metropolitan Atlanta. Lawrenceville was incorporated by an act of the Georgia General Assembly on 15 December 1821.