| Date | ||||
| Number of citizens in general | Number of Jews | Percentage of Jewish population | ||
| 1722 | – | 15 families | – | |
| 1763 | – | 0 | – | |
| 1794 | – | 1 family | – | |
| 1816 | 1576 | 74 | 4,70% | |
| 1831 | 1628 | 111 | 6,82% | |
| 1834 | 1939 | 118 | 6,09% | |
| 1837 | 2065 | 134 | 6,49% | |
| 1840 | 2115 | 146 | 6,90% | |
| 1843 | 2267 | 184 | 8,12% | |
| 1846 | 2381 | 165 | 6,93% | |
| 1849 | 2228 | 171–177 | 7,68–7,94% | |
| 1852 | 2297 | 164 | 7,14% | |
| 1855 | 2281 | 160 | 7,02% | |
| 1858 | 2366 | 162 | 6,85% | |
| 1861 | 2538 | 183 | 7,21% | |
| 1864 | 2912 | 184 | 6,32% | |
| 1867 | 3189 | 181 | 5,68% | |
| 1871 | 3459 | 124 | 3,58% | |
| 1885 | 4 570 | 140 | 3,06% | |
| 1889 | – | 140 | – | |
| 1890 | 5701 | 134 | 2,35% | |
| 1895 | 6699* | 138 | 2,06% | |
| 1905 | 9531* | 100 | 1,05% | |
| 1910 | 10 087* | 124–135 | 1,23–1,34% | |
| 1925 | 11 242* | 110 | 0,98% | |
| 1932 | – | 110 | – | |
| 1933 | 12 836* | 84 | 0,65% | |
| 17.05. 1939 | – | 8 | – | |
| 1939 | 12 772* | 0 | – | |
| 2010 | 32 276 | – | – | |
* - involving the military
Sources:
- A. Piątkowski, Iława w czasach nowożytnych (wybrane zagadnienia), in: Iława, (1999), table 8, 11;
- M. Rademacher, Deutsche Verwaltungsgeschichte 1871–1990. Landkreis Rosenberg in Westpreußen, http://www.verwaltungsgeschichte.de/rosenberg_op.html]] [Accessed: 25 September 2013];
- S. Szczepański, Mieszkańcy Iławy na tle dziejów miasta (do 1945 r.), [in: Iława 1305-2005. Siedemset lat dziejów, (2006), 63–64.
