Sarstedt is a town in the district of Hildesheim, Lower Saxony, Germany. It has around 18,500 inhabitants. Sarstedt is close to Hanover. Sarstedt station is on the Hanoverian Southern Railway and is served by the Hanover S-Bahn. The GEO 600 gravitational wave detector is located nearby. The former independent municipality Giften has been a part of Sarstedt since March 1, 1974.