Guinea-Bissau's 39 sectors function as the country's second and lowest level of administrative subdivision, positioned beneath the regional level in the nation's two-tier governance structure. These sectors serve as the primary units for local administration, responsible for implementing government policies, delivering basic public services, and managing community-level affairs within their jurisdictions. Each sector typically encompasses multiple villages or small towns and acts as the direct interface between the central government and local populations. The sectoral administration handles matters such as civil registration, local tax collection, primary education oversight, basic healthcare coordination, and maintenance of local infrastructure. This administrative framework allows Guinea-Bissau to extend governmental reach across its territory while accommodating the country's diverse ethnic communities and geographic conditions.