|Coordinates: 50°58′0″N 11°54′0″E / 50.96667°N 11.90000°ECoordinates: 50°58′0″N 11°54′0″E / 50.96667°N 11.90000°E|
|• Mayor||Ingo Lippert (SPD)|
|• Total||24.85 km2 (9.59 sq mi)|
|• Density||550/km2 (1,400/sq mi)|
|Time zone||CET/CEST (UTC+1/+2)|
|Vehicle registration||SHK, EIS, SRO|
Neighboring municipalities are Jena (25 kilometres (16 miles) in west) and Gera (15 kilometres (9 miles) in south east). West of Eisenberg runs the motorway A 9 from Berlin to Munich. A tradition in Eisenberg on Christmas Eve is that the people of the city meet at the market place by 6 to listen to live Christmas music from the tower of the city hall - played by the brass choir of the Lutheran parish.
The main attraction of the town is the baroque Castle Church, built in 1692 by Christian, Duke of Saxe-Eisenberg.
Sons and daughters of the city
- Johann Michael Heineccius (1674–1722), Lutheran clergyman and historian
- Johann Gottlieb Heineccius (1681–1741), professor of law and philosophy
- Karl Christian Friedrich Krause (1781–1832), philosopher
- Bruno Bauer (1809–1882), philosopher
- Prince Moritz of Saxe-Altenburg (1829–1907), Prussian General of the Cavalry
- Gerhard Buchwald (1920–2009), physician
- Gunther Emmerlich (born 1944), singer and entertainer
- Christian of Saxony-Eisenberg (1653–1707), the only Duke of Saxony-Eisenberg
- Immanuel Johann Gerhard Scheller (1735–1803), an old philologist and lexicographer, studied the Gymnasium in Eisenberg between 1747 and 1752
- Charlotte Amalie von Sachsen-Meiningen (Duchess of Saxony-Gotha-Altenburg) lived for several years in Eisenberg
- Georg von Sachsen-Altenburg (1796–1853), Duke of Saxony-Altenburg, resided alternately in Altenburg and Eisenberg
- Otto Hammann (1852–1928), jurist, attended high school in Eisenberg
- Ernst II, Duke of Saxe-Altenburg (1871–1955), Duke of Saxony-Altenburg, visited the Christian school in Eisenberg between 1886 and 1889
- Peter Landau (born 1935), legal scientist, went to school in Eisenberg
Information about the Castle Church: Ev.-Luth. Kirchgemeinde Eisenberg.