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Ways Singapore has been subdivided for administrative purposes

Singapore is governed as a unitary state without provinces or states. However, for the purposes of administration and urban planning, it has been subdivided in various ways throughout its history. As of 2022, Singapore has a total land area of about , not including its sea area.

Historically, these subdivisions have been based on postal districts, especially during the colonial era. When local elections necessitated the setting up of electoral districts, however, it began to supplement postal districts as an alternative form of local governance, since each electoral district is headed by a member of parliament who represents and speaks for the respective electorates.

Town councils are then further subdivided into different constituencies, which are classified as either Single Member Constituencies (SMCs) or Group Representation Constituencies (GRCs). The boundaries of the electoral constituencies are decided by the Elections Department, which is under the control of the Prime Minister's Office.

The five regions of Singapore are groupings of the planning areas.

In the 1990s, the Urban Redevelopment Authority carved up the country into 55 of planning areas. The Singapore Department of Statistics adopted these boundaries for the latest 2000 nationwide population census, and the Singapore Police Force uses them as an approximate guide when demarcating boundaries for its Neighbourhood Police Centres.

Singapore is divided into 64 survey districts, of which 34 are mukims (originally, rural districts) and 30 are town subdivisions.

Postal districts were numbered from 01 to 83 under the new system implemented on 1 September 1995. Census data and most forms of internal boundaries had been based on postal districts until the introduction of new planning boundaries in the 1990s.