Gwinnett County is located in the north central portion of the U.S. state of Georgia. It forms part of the Atlanta metropolitan area, being located about 9 miles (14 km) northeast of Atlanta city limits. In 2020, the population was 957,062, making it the second-most populous county in Georgia. Its county seat is Lawrenceville. The county is named for Button Gwinnett, one of the signatories of the Declaration of Independence.