thumb|right|250px|alt=Map of Mexico with Baja California Sur highlighted|Map of Mexico with Baja California Sur highlighted
thumb|200px|alt=Map of the Municipalities of Baja California Sur|Municipalities of [[Baja California Sur since 1992.]]
Baja California Sur is a state in northwest Mexico divided into five municipalities. According to the 2020 INEGI census, Baja California Sur is the second least populous state with inhabitants and the 11th largest by land area, spanning . Every three years, citizens elect a municipal president (Spanish: presidente municipal) by a plurality voting system who heads a concurrently elected municipal council (ayuntamiento) responsible for providing all the public services for their constituents. The municipal council consists of a variable number of trustees and councillors (regidores y síndicos). Municipalities are responsible for public services (such as water and sewerage), street lighting, public safety, traffic, and the maintenance of public parks, gardens and cemeteries. They may also assist the state and federal governments in education, emergency fire and medical services, environmental protection and maintenance of monuments and historical landmarks. Since 1984, they have had the power to collect property taxes and user fees, although more funds are obtained from the state and federal governments than from their own income.
!scope="col" rowspan=2| Change
!scope="col" data-sort-type="number" colspan=2| Land area
!scope="col" data-sort-type="number" rowspan=2| Population density<br>(2020)
!scope="col" rowspan=2| Incorporation date
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!scope="col"| km<sup>2</sup>
!scope="col"| sq mi
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!scope="row" align="left"|Comondú
|align=left| Ciudad Constitución
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!scope="row" align="left" style="background:#CCF;"|La Paz
|align=left style="background:#CCF;"|La Paz
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!scope="row" align="left"|Loreto
|align=left|Loreto
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!scope="row" align="left"|Los Cabos
|align=left|San José del Cabo
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!scope="row" align="left"|Mulegé
|align=left|Santa Rosalía
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!scope="row" align="left"| Baja California Sur
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!scope="row" align="left"| Mexico
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