Herstappe is a Flemishmunicipality located in the Belgian province of Limburg. On January 1, 2008, Herstappe had a total population of 84. The total area is 1.35 km² which gives a population density of 61 inhabitants per km². It is the least populous municipality in Belgium, and the third smallest in area.
For the Belgian local elections, 2012, Herstappe was the only Belgian municipality where elections were not held as there was only one candidate list. Previously, this had already happened between 1958 and 1994.
The incumbent mayor (since 1994), Serge Louwet, was the lowest paid Belgian mayor in 2012 with 675 € for his monthly wages. Actually, his official salary is 1,400 € but he considered it too high and kept only 675, the rest being given back to the municipal treasurer.