Guimaras comprises primarily of Guimaras Island, and the minor islets of Inampulugan, Guiwanon (or Guiuanon), Panobolon, Natunga, Nadulao and many more. The province covers a total area of 604.57 square kilometres (233.43 sq mi) occupying the southeastern section of the Western Visayas region.
The province has 5 municipalities. There is only one legislative district of Guimaras which encompasses all five towns.
- Nueva Valencia
The population of Guimaras in the 2015 census was 174,613 people, with a density of 290 inhabitants per square kilometre or 750 inhabitants per square mile.
The people of the province, called Guimarasnon, speak Hiligaynon and Kinaray-a as the primary languages, as it was once a sub-province of Iloilo. Filipino and English are widely spoken and understood.