"horseshoe area" in context with earlier Muslim communities living there. Administrative areas East Java is administratively divided into 29 regencies (or kabupaten ) and 9 cities (or kotamadya ). Regencies (seat): Java and Bawean island. Banyuwangi Blitar Bojonegoro Bondowoso Gresik Jember Jombang Kediri Lamongan Lumajang Madiun Magetan Malang Mojokerto Nganjuk Ngawi