In the 19th century, Protestants (Lutheran) also settled in Horb. In 1866, they were able to establish their first congregation there, and some time later build their own place of worship, the "Johanneskirche" (St. John's). The community based in Horb is part of the Sulz am Neckar district within the Evangelical-Lutheran Church in Württemberg, and includes members of the Protestant churches in Horb itself, in Altheim, Isenburg, Grünmettstetten, Nordstetten and Bildechingen, as well as in the neighboring municipality of Eutingen im Gäu. Another Protestant community based in Dettingen includes Protestants in Betra, Dießen, Ihlingen, and Rexingen along with neighboring Fischingen and Glatt; yet another one based in Mühlen includes those in Ahldorf, Dettensee, and Mühringen. Protestants in Talheim (formerly Obertalheim and Unterteilheim) belong to the Heiterback-Talheim community in the Nagold district, and those in Bittelbronn and Dettlingen belong to the Shopfloch community in the Freudenstadt district.