bᵻfˌoːɹ ðɪ ɪŋkˌoːɹpɚɹˈeɪʃən wɪð wˈɪʔn̩ ɪn nˈaɪntiːnhˈʌndɹɪd twˈɛnti nˈaɪn, ˈænən wʌz pˈɑːɹt ʌvðɪ ɐdmˈɪnɪstɹˌeɪɾɪv dˈɪstɹɪkt lˈændkɹeɪz hˈoʊɚd.
Before the incorporation with Witten in 1929, Annen was part of the administrative district Landkreis Hoerde.