Oberstadtdirektor 1975–1985: Hans Mohn, Stadtdirektor 1985–1989: Volker Oerter, Stadtdirektor 1989–1995: Otto-Werner Rappold, Stadtdirektor (left office early with effect on 2 December 1995 by his own wish) 1995–1999: Ulrich Mock, Stadtdirektor (at first as Dr. Rappold's General Agent until 31 January 1997, then appointed fulltime Stadtdirektor) City council The Siegen city council governs the city alongside the Mayor. The most recent city council election was held on 13 September 2020, and the results were as follows: ! colspan=2| Party ! Votes ! % ! +/- ! Seats ! +/- |- | bgcolor=| | align=left| Christian Democratic Union (CDU) | 12,366 | 31.3 | 3.3 | 22 | 1 |- | bgcolor=| | align=left| Social Democratic Party (SPD) | 8,582 | 21.7 | 7.1 | 15 | 4 |- | bgcolor=| | align=left| Alliance 90/The Greens (Grüne) | 6,704 | 17.0 | 5.4 | 12 | 4 |- | | align=left| Independent Voters' Association (UWG) | 3,172 | 8.0 | 0.2 | 6 | 1 |- | bgcolor=| | align=left| Alternative for Germany (AfD) | 2,877 | 6.3 | 2.5 | 5 | 2 |- | bgcolor=| | align=left| Free Democratic Party (FDP) | 2,481 | 6.3 | 0.3 | 4 | ±0 |- | bgcolor=| | align=left| The Left (Die Linke) | 2,000 | 5.1 | 1.0 | 4 | ±0 |- | bgcolor=| | align=left| Volt Germany (Volt) | 1,187 | 3.0 | New | 2 | New |- | colspan=7 bgcolor=lightgrey| |- | bgcolor=| | align=left| Independent Bach | 171 | 0.4 | New | 0 | New |- | bgcolor=| | align=left| Independent Schulte | 15 | 0.0 | New | 0 | New |- ! colspan=2| Valid votes ! 39,555 ! 98.6 ! ! ! |- ! colspan=2| Invalid votes ! 553 ! 1.4 ! ! ! |- ! colspan=2| Total ! 40,108 ! 100.0 ! ! 70 ! 4 |- ! colspan=2| Electorate/voter turnout ! 80,568 ! 49.8 ! ! ! |- | colspan=7| Source: City of Siegen |} Coat of arms Siegen's civic coat of arms might be described thus: Argent a town wall embattled gules with an open gateway argent, therein in an inescutcheon azure a lion rampant Or armed and langued gules, issuant from the wall a bishop in robe and mitre azure (trimmed in argent) holding in his hand dexter a crozier argent with crook Or sinister, in his hand sinister, upraised,