:The District Expznsion in Improvement Population Service. The district expansion at Gampengrejo District in Kediri Regency based on The Law Number 22 in 1999 about Local Governance and then clarified again by the Ministerial Decision In 2000 Number 4 about The Guidelines of District Formation. The district expansion at Gampengrejo District in Kediri Regency had been implemented because it has a lot of population, total territory, and the number of villages. District expansion implemented is to give service to society optimally and to give district offices closer to the people. So this thesis describes the implementation of district expansion in order to improve public services and service population after the real location of district. Became the requirement for the implementation of district expansion had been fulfilled accordance with applicable regulation and increase in service to the population after the implementation of district expansion is the distance of the village to the district office become nearly.