Rohrdorf was first mentioned in 788 in the so called notitia arnonis.
Settlements have been proofed also in prehistoric time.
See also:
http://www.rohrdorf.de
... to the United States Census Bureau, the town has a total area of 4.4 km² (1.7 mi²). 3.3 km² (1.3 mi²) of it is land and 1.1 km² ...