The municipality, a rural residential community, lies in the Kyrbach valley in the central Hunsrück, roughly 4 km northwest of Kirchberg and 6 km northeast of Frankfurt-Hahn Airport. The municipal area measures 5.84 km², of which 2.06 km² is wooded.
History
As in Nieder Kostenz, there was an early Roman settlement. A grave field from the 1st century on what is now Kreisstraße 10 to the Hunsrückhöhenstraße was unearthed in 1939 and 1949. In 1220, Ober Kostenz had its first documentary mention in one of St. Maximin's Abbey's directories of holdings. Between 1286 and 1333, a local noble family who held a fief in Ober Kostenz from the Counts of Sponheim is witnessed. Later, the Elector of the Palatinate was the landholder. The village church was from 1689 to 1896 a simultaneous church. Today's Evangelical church comes from 1745, while the tower is likely mediaeval. Beginning in 1794, Ober Kostenz lay under French rule. In 1815 it was assigned to the Kingdom of Prussia at the Congress of Vienna. Since 1946, it has been part of the then newly founded state of Rhineland-Palatinate. In 1993, Ober Kostenz was honoured as the “Prettiest Municipality in the Regierungsbezirk of Koblenz.
The council is made up of 6 council members, who were elected by majority vote at the municipal election held on 7 June 2009, and the honorary mayor as chairman.
Mayor
Ober Kostenz’s mayor is Gerd Schreiner, and his deputy is Klaus Rodenbusch.
The German blazon reads: Unter zweireihig von Blau und Gold geschachtem Schildhaupt in goldenem Feld roter Schrägbalken, begleitet oben von einem schwarzen gotischen C, unten von einem schwarzen Halsreif. The municipality’s arms might in English heraldic language be described thus: Below a chief countercompony azure and Or, Or a bend gules between a torc and a Gothic letter C, both sable. The chief with the countercompony pattern is a reference to the village’s former allegiance to the “Further” County of Sponheim and the Amt of Kirchberg. The red bend is a reference to the village's later allegiance to Baden. The letter C refers to the municipality's name and also to the knight Conrad von Costenz, who was mentioned in 1310. The black torc refers to the wealth of archaeological finds made in the grave field from the Hunsrück-Eifel Culture near the Eichelberg.
Culture and sightseeing
Buildings
The following are listed buildings or sites in Rhineland-Palatinate’s Directory of Cultural Monuments:
Evangelical church, Osterbahn 3 – mediaeval tower, Classicistaisleless church, 1793; whole complex of buildings with graveyard
Hauptstraße 21 – timber-frame house, partly solid, earlier half of the 19th century; whole complex of buildings with barns
Raiffeisenstraße 15 – timber-frame house, partly slated, half-hipped roof, first third of the 19th century; whole complex of buildings
The Evangelical church also has a Stumm organ from 1891.
Economy and infrastructure
Ober Kostenz is characterized by agriculture and handicrafts. East of Ober Kostenz lies the biggest wind farm in the Rhein-Hunsrück-Kreis with facilities by Vestas and Fuhrländer.
