1964년에는 광주군 직할의 성남출장소를 설치하여 인구 및 행정수요 증가에 능동적으로 대처하는 광주군수 직할 지휘 감독 체제로 전환하였다.
In 1964, the Seongnam branch office under the direct control of Gwangju-gun was established, and the system was converted into a command and supervision system under the direct control of governor of Gwangju-gun that actively responds to the increase in population and administrative demand.