Major employers include Robert Bosch GmbH, Schaeffler Group and Michelin.

Homburg is located in the northern part of the Saarpfalz district, bordering Rhineland-Palatinate.

The city districts are situated in the Blies valley or on its tributaries Erbach, Lambsbach and Schwarzbach.

Actual (as of 1 August 2022):[3] County of Homburg 12th century–1449 County of Nassau-Saarbrücken 1449–1680 Kingdom of France 1680–1697 County of Nassau-Saarbrücken 1697–1755 Palatine Zweibrücken 1755–1793 French Republic 1793–1804 French Empire 1804–1815 Kingdom of Bavaria 1816–1871 German Empire 1871–1918 Territory of the Saar Basin 1920–1935 Nazi Germany 1935–1945 Saar Protectorate 1947–1956 West Germany 1957–1990 Germany 1990–present Hohenburg Castle, nowadays a ruin, was the seat of the counts of Homburg in the 12th century.

Homburg (Saar) Hauptbahnhof is the main railway station in the town, served by long-distance and regional trains.