Ilmenau
Lakosság
| Év |
Lakosság (fő) |
| 1340 körül | kb. 800 |
| 1450 körül | kb. 550 |
| 1615 körül | kb. 1.400 |
| 1640 körül | kb. 600 |
| 1650 körül | kb. 1.000 |
| 1771 | 1.495 |
| 1783 | 1.628 |
| 1784 | 1.667 |
| 1785 | 1.659 |
| 1786 | 1.764 |
| 1787 | 1.877 |
| 1788 | 1.903 |
| 1789 | 1.963 |
| 1790 | 1.919 |
| 1799 | 2.001 |
| 1817 | 2.160 |
| 1832 | 2.596 |
| 1836 | 2.661 |
| 1837 | 2.543 |
| 1838 | 2.683 |
| 1839 | 2.722 |
| 1840 | 2.759 |
| 1841 | 2.766 |
| 1842 | 2.843 |
| 1843 | 2.809 |
| 1846 | 2.796 |
|
| Év |
Lakosság (fő) |
| 1849 | 2.791 |
| 1852 | 2.818 |
| 1855 | 2.887 |
| 1858 | 3.026 |
| 1861 | 2.732 |
| 1864 | 3.128 |
| 1867 | 3.222 |
| 1871 | 3.443 |
| 1875 | 3.760 |
| 1880 | 4.593 |
| 1885 | 5.483 |
| 1890 | 6.508 |
| 1895 | 7.956 |
| 1900 | 10.419 |
| 1905 | 11.223 |
| 1907 | 11.584 |
| 1909 | 12.257 |
| 1910 | 12.198 |
| 1919 | 11.663 |
| 1921 | 12.559 |
| 1922 | 12.859 |
| 1923 | 13.051 |
| 1924 | 13.531 |
| 1925 | 13.614 |
| 1926 | 14.074 |
| 1927 | 14.361 |
|
| Év |
Lakosság (fő) |
| 1928 | 14.461 |
| 1929 | 14.566 |
| 1930 | 14.687 |
| 1931 | 14.601 |
| 1932 | 14.598 |
| 1933 | 14.552 |
| 1934 | 14.257 |
| 1935 | 14.486 |
| 1936 | 14.504 |
| 1937 | 14.706 |
| 1938 | 15.019 |
| 1939 | 17.064 |
| 1940 | 17.279 |
| 1941 | 16.668 |
| 1942 | 16.876 |
| 1943 | 16.392 |
| 1944 | 18.748 |
| 1945 | 21.862 |
| 1946 | 18.668 |
| 1947 | 19.335 |
| 1949 | 19.352 |
| 1950 | 19.108 |
| 1960 | 17.738 |
| 1970 | 19.634 |
| 1974 | 19.000 |
| 1977 | 22.700 |
|
| Év |
Lakosság (fő) |
| 1980 | 26.293 |
| 1981 | *28.749 |
| 1985 | 29.481 |
| 1987 | 29.500 |
| 1989 | 29.293 |
| 1990 | 28.454 |
| 1991 | 27.642 |
| 1992 | 27.622 |
| 1993 | 29.282 |
| 1994 | 28.899 |
| 1995 | 28.514 |
| 1996 | 28.100 |
| 1997 | 27.988 |
| 1998 | 27.700 |
| 1999 | 27.524 |
| 2000 | 27.176 |
| 2001 | 27.124 |
| 2002 | 27.249 |
| 2003 | 27.157 |
| 2004 | 26.833 |
| 2005 | 26.737 |
|
Polgármesterek
- 1821–1830: Johann Georg Carl Christian Blumröder
- 1831–1837: Adolph Ludwig Friedrich Conta
- 1838–1848: Konstantin Lairitz
- 1849–1873: Johann Christian Hertzer
- 1874–1890: Friedrich Hörung
- 1890–1900: Paul Eckardt
- 1901–1906: Alexander Bleymüller
- 1906–1911: Konrad Angermann (Jurist)
- 1911–1918: Karl Willigmann (Jurist)
- 1918–1920: Nincs polgármester
|
- 1920–1922: Hermann Zachäus
- 1923–1925: Heinrich Brauer
- 1925–1931: Paul Hinz
- 1931–1933: Hellmuth Birnbaum
- 1933–1934: Hermann Schultz
- 1934–1945: Richard Walther
- 1945. május 10. – 1945. július 12.: Hermann Zachäus
- 1945–1950: Paul Fliedner
- 1950–1961: Charlotte Gleichmann
- 1961–1979: Kurt Heunemann
- 1979–1989: Siegfried Güthoff
- 1989–1990: Peter Bischoff
- 1990. január – 1990. május: Hans-Georg Rammelt
- 1990 májusától: Gerd-Michael Seeber
|
Média
Újságok:
- Freies Wort
- Thüringer Allgemeine
Rádiók:
Campusradio der Technischen Universität (Radio hsf)