Westdijk

Binnenmaas
Municipality
Lake Binnenmaas
Coat of arms
Location in South Holland
Coordinates: 51°48′N 4°33′E / 51.800°N 4.550°E / 51.800; 4.550Coordinates: 51°48′N 4°33′E / 51.800°N 4.550°E / 51.800; 4.550
Country	Netherlands
Province	South Holland
Government
• Body	Municipal council
• Mayor	André Borgdorff (CDA)
Area
• Total	75.57 km2 (29.18 sq mi)
• Land	69.26 km2 (26.74 sq mi)
• Water	6.31 km2 (2.44 sq mi)
Elevation	−1 m (−3 ft)
Population (August 2017)
• Total	29,136
• Density	421/km2 (1,090/sq mi)
Time zone	CET (UTC+1)
• Summer (DST)	CEST (UTC+2)
Postcode	3270–3274, 3295–3299
Area code	0186, 078
Website	www.binnenmaas.nl

Binnenmaas (Dutch pronunciation: [ˈbɪnə(n)maːs] ( listen)) is a municipality in the western Netherlands, in the province of South Holland. The municipality had a population of 29,136 in 2017, and covers an area of 75.57 km² (29.18 sq mi) of which 6.31 km² (2.44 sq mi) is water. It is named after the lake of the same name.

The municipality was formed on January 1, 1984, by the merger of the municipalities Puttershoek, Maasdam, Mijnsheerenland, Westmaas, and Heinenoord. On January 1, 2007, the municipality 's-Gravendeel was added to Binnenmaas.

The municipality of Binnenmaas consists of the following communities: Blaaksedijk, De Wacht, Goidschalxoord, 's-Gravendeel, Greup, Heinenoord, Kuipersveer, Maasdam, Maasdijk, Mijnsheerenland, Puttershoek, Reedijk, Schenkeldijk, Sint Anthoniepolder, Westdijk, Westmaas and Zwanegat.