Number of inhabitants (1 Jan 2003): 40.599; area: 30,86 km². Settlements:
Maarssen (seat), Maarssenbroek, Maarssen-dorp, Maarsseveen, Molenpolder,
Oud-Maarsseveen, Oud-Zuilen, Tienhoven.
On 1 Jul 1949 the present municipality was formed by the merger of
Maarssen and Maarsseveen.
The wavy bar on the flag represents the meandering Vecht river.