Obernheim grew and industrialized after the Second World War, first expanding in the 1950s to the north-east and west, and then in the 1970s to the north once more.

[3] The municipality (Gemeinde) of Obernheimof is located along the southern edge Zollernalb district of Baden-Württemberg, one of the Federal Republic of Germany's 16 States.

[3] A portion of the Federally-protected Stromelsberg-Hessenbühl [de] nature reserve is located in Obernheim's municipal area.

[3] Population development:[4] Obernheim's coat of arms is a field of white crossed by a single blue bar.

This pattern was adapted from the personal blazon of Johann von Obernheim, a local 14th century nobleman, and was approved for official use by the provisional post-WWII Württemberg-Hohenzollern government on 27 October 1950.