With the accession of Croatia to the European Union on 1 July 2013 the geodetic centre of the EU shifted to Westerngrund.

The community has the following Gemarkungen (traditional rural cadastral areas): Oberwestern, Unterwestern, Huckelheim.

Today's community of Westerngrund mainly comprises areas that belonged to the Schönborn Amt of Krombach, which in 1806 was mediatized with the newly formed Principality of Aschaffenburg, with which it passed in 1814 (by this time it had become a department of the Grand Duchy of Frankfurt) to the Kingdom of Bavaria.

The crossed miner's hammers stand for the former silver and copper mining in the centre of Huckelheim.

According to official statistics, there were 74 workers on the social welfare contribution rolls working in producing businesses in 1998.