The municipality lies in the Hunsrück northwest of the 746 m-high Idarkopf. The municipal area is 44.3% wooded, and its elevation is 460 m above sea level.
Neighbouring municipalities
Horbruch borders in the north on the municipality of Hirschfeld, in the east on the municipality of Krummenau and in the west on the municipality of Hochscheid.
Constituent communities
Also belonging to Horbruch are the outlying homesteads of Bergmühle, Emmerichsmühle, Forsthaus Horbruch, Hockenmühle and Neumühle.
History
digs have been undertaken at a number of barrows in the cadastral area known as the Feldmark, up from the Marienmühle, dating from protohistoric times. Unearthed here were grave goods in the form of remnants of cutting and thrusting weapons as well as a few almost intact pieces of jewellery in typical Celtic ornamental style. Moreover, over on the north slope of the Idar Forest, not three kilometres from the village, in the Koppelbach's headwaters, a temple, likewise from Celtic times, was dug up. This was dedicated to Sirona and was later expanded by the Romans in the 2nd century AD. Unearthed here were a votive altar and almost life-size statues of the healing goddess Sirona and the god Apollo Grannus. Once running by Horbruch's southern outskirts was the most important overland link between the Roman towns of Augusta Treverorum and Moguntiacum. Another road, Bundesstraße 327, also called the Hunsrückhöhenstraße, is a scenic road across the Hunsrück built originally as a military road on Hermann Göring’s orders; it runs parallel to the old Roman road.
Politics
Municipal council
The council is made up of 8 council members, who were elected by majority vote at the municipal election held on 7 June 2009, and the honorary mayor as chairman.
The German blazon reads: In schräglinks geteiltem Schild vorne in Schwarz ein goldenes Horn, hinten rot-silbernes Schach. The municipality’s arms might in English heraldic language be described thus: Per bend sinister sable a bugle-horn bendwise sinister Or and chequy gules and argent. The charge on the dexter side, the horn, is drawn from Horbruch’s 18th-century court seal, whose original stamp is in private ownership in the municipality. It might also be a canting charge for the village’s name, but this is unclear. The “chequy” pattern on the sinister side is a reference to the village's former allegiance to the “Hinder” County of Sponheim.
Culture and sightseeing
Buildings
The following are listed buildings or sites in Rhineland-Palatinate’s Directory of Cultural Monuments:
Oberdorf 10 – timber-frame Quereinhaus, hipped mansard roof, about 1800; timber-frame commercial wing less old
Unterdorf 1 – representative house, late 19th century
Unterdorf 6 – community house, asymmetrical plastered building, 1928
Unterdorf 8 – hook-shaped estate, about 1888; timber-frame building on solid pedestal, partly plastered or slated
Bergmühle, southeast of the village on the Altbach – stately Baroque building with mansard roof, marked 1804, essentially possibly from the 16th century; millpond
Marienmühle, south of the village on the Altbach – timber-frame building, slated, on solid pedestal ground floor, technical equipment largely preserved, 19th century