Ulmet is one of the oldest places in the Glan area. The first documentary mention came as early as 932 or 952 in the addendum to the Polyptych of St. Remi, in which a place called "Kapellen" is named. What was meant by this was the "Flurskapelle", a chapel that still stands today, then the hub of a great parish. In the early 12th century, the village passed to the County of Veldenz, whose counts exercised the "Schutzvogtei" over the so-called "Remigiusland". In 1444, Count Palatine Stephan of the Palatinate merged Veldenz, some of his own holdings and the County of Zweibrücken to found the new County of Palatinate-Zweibrücken, which was later generally known as a duchy. Ulmet lay within this duchy up until French Revolutionary troops occupied the lands on the Rhine’s left bank, during which time Ulmet was, sometimes by itself and sometimes together with Pilsbach across the Glan, was the chief centre of a Zweibrücken "Unteramt".