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Census data for Øster Kvarter
| 1787 | 431 | 5,939 | 2,937 | 49.45% | 2,997 | 50.46% | 5 | 0.08% | 0 |
| 1801 | 303 | 6,098 | 2,965 | 48.62% | 3,132 | 51.36% | 1 | 0.02% | 0 |
| 1834 | 0 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1840 | 1,032 | 7,899 | 3,741 | 47.36% | 4,148 | 52.51% | 10 | 0.13% | 0 |
| 1845 | 530 | 7,943 | 3,620 | 45.57% | 4,317 | 54.35% | 6 | 0.08% | 0 |
| 1850 | 720 | 8,347 | 3,843 | 46.04% | 4,461 | 53.44% | 43 | 0.52% | 276 |
| 1855 | 1,230 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1860 | 517 | 8,552 | 3,924 | 45.88% | 4,628 | 54.12% | 0 | 0.00% | 0 |
| 1870 | 1,423 | 15,758 | 7,073 | 44.89% | 8,682 | 55.10% | 3 | 0.02% | 0 |
| 1880 | 2,864 | 24,800 | 11,552 | 46.58% | 13,244 | 53.40% | 4 | 0.02% | 5,862 |
| 1885 | 1,543 | 20,554 | 9,033 | 43.95% | 11,516 | 56.03% | 5 | 0.02% | 18,319 |
| 1890 | 3,445 | 7,471 | 3,280 | 43.90% | 4,008 | 53.65% | 183 | 2.45% | 1,936 |
| 1895 | 2,742 | 2,161 | 1,015 | 46.97% | 1,146 | 53.03% | 0 | 0.00% | |
| 1901 | 4,346 | 27,651 | 11,836 | 42.80% | 15,802 | 57.15% | 13 | 0.05% | 24,182 |
| 1906 | 4,031 | 763 | 348 | 45.61% | 415 | 54.39% | 0 | 0.00% | 0 |
| 1911 | 4,871 | 26 | 18 | 69.23% | 8 | 30.77% | 0 | 0.00% | 0 |
| 1916 | 8,876 | 13 | 4 | 30.77% | 9 | 69.23% | 0 | 0.00% | 0 |
| 1921 | 3,827 | 32 | 15 | 46.88% | 17 | 53.13% | 0 | 0.00% | 0 |
| 1925 | 20,325 | 2 | 1 | 50.00% | 1 | 50.00% | 0 | 0.00% | 0 |
| 1930 | 19,325 | 353 | 151 | 42.78% | 202 | 57.22% | 0 | 0.00% | 0 |
| 1940 | 22,758 | 6,673 | 2,985 | 44.73% | 3,688 | 55.27% | 0 | 0.00% | 0 |
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