It is located in the province of Southern Finland and is part of the Kymenlaakso region.

[1] The population density is 4.03 inhabitants per square kilometre (10.4/sq mi).

Neighbouring municipalities are Hamina, Kouvola, Lappeenranta, Luumäki and Virolahti.

According to Traficom, Miehikkälä is the fourth most motorized municipality in Finland with 629 cars per thousand inhabitants.

[5] The coat of arms of the municipality representing the letter M (which refers to Miehikkälä's name) was designed by Tapio Vallioja in 1956.