Also belonging to the municipality is Dreiweiherhof, once a farmers’ and day labourers’ settlement that was once an Electoral Palatinate customs post with a brickworks.

In 1798, the municipality was incorporated into the French state, within which it found itself in the Department of Mont-Tonnerre (or Donnersberg in German) until it passed under the terms of the Congress of Vienna to the Kingdom of Bavaria in 1816.

[5] Rather a great deal of Hallgarten's mediaeval history has to do with Montfort Castle, a major military stronghold in the local area shared by a number of lordships.

Lying today in a secluded woodland away from main highways some 10 km west of Bad Münster am Stein-Ebernburg, the castle was built by the Counts of Veldenz about 1200 to keep watch upon a nearby army road.

The joint holders (Ganerben) each acquired through marriage or sale a castle house as an hereditary property, somewhat like a modern-day condominium.

[6] The concentrated fighting force of such a great number of knights and their servants was surely what kept Montfort Castle from facing any serious attack or siege, at least as far as history records up to 1456.

It took Archbishop of Mainz Diether's and Elector Palatine Friedrich I's vastly superior fighting forces to conquer and destroy the castle on 19 October of that year, with firearms, after a five-day siege.

[7] The Dreiweiherhof served “Schinderhannes” (or Johannes Bückler, to use his real name) as a hideout and base beginning in 1797.

The municipal election held on 7 June 2009 yielded the following results:[10] Hallgarten's mayor is Johann Klein.

The German blazon lays out the charges in far less detail than this, and it could therefore be that the heraldic artist indulged his fancy when executing these arms.

The blazon also mentions the lack of a charge in the inescutcheon, namely the globus cruciger that apparently usually stands in the base.

The following are listed buildings or sites in Rhineland-Palatinate’s Directory of Cultural Monuments:[11] To Hallgarten's east runs Bundesstraße 48.