Mömbris lies in the Bavarian Lower Main (Bayerischer Untermain) in the Kahlgrund halfway between Schöllkrippen and Alzenau, which are linked by Staatsstraße (State Road) 2305, at the foot of the Vorspessart (range) with its highest elevation, the Hahnenkamm at 437 m above sea level.

Free Märker (Markgenossenschaft dwellers) gathered every year in Alzenau to choose a Landrichter (judge) and foresters and to deal with important decisions.

Each village supplied, commensurately with each one's number of freemen, Schöffen (roughly “lay jurists”) whose job it was to mete out justice.

Mömbris became under the Reichsdeputationshauptschluss in 1803 part of the newly formed Principality of Aschaffenburg, ruled by Prince primate Karl Theodor von Dalberg, with which it passed in 1814 (by this time it had become a department of the Grand Duchy of Frankfurt) to Bavaria.

(as at municipal election held on 2 March 2008) The community's arms might be described thus: Gules a sword argent palewise the hilt and pommel Or, dexter a wheel of the second spoked of six, sinister a crown proper with four leaves.

Over the last few years, Mömbris has had to deal with a fall in population and economic problems (loss of buying power in the neighbouring Kahlgrund towns of Schöllkrippen and Alzenau).

According to official statistics, there were 1,038 workers on the social welfare contribution rolls working in agriculture, forestry and producing businesses in 1998.