Since 1929, Annen has been a part of the City of Witten (since 1946 North Rhine-Westphalia, Germany). As one of the eight boroughs of Witten, it is now called Witten-Annen. Before the incorporation with Witten in 1929, Annen was part of the administrative district Landkreis Hoerde. Today, Annen has about 19,000 inhabitants. Witten-Annen has an institute for Waldorf pedagogics, as well as a Waldorf school. This school annually hosts the international eurythmy festival, Forum Eurythmie.