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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 | 2,967 | 48.66% | 3,130 | 51.33% | 1 | 0.02% | 0 |
| 1834 | 0 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1840 | 1,041 | 7,899 | 3,864 | 48.92% | 4,025 | 50.96% | 10 | 0.13% | 0 |
| 1845 | 530 | 7,928 | 3,601 | 45.42% | 4,321 | 54.50% | 6 | 0.08% | 0 |
| 1850 | 729 | 8,347 | 3,895 | 46.66% | 4,406 | 52.79% | 46 | 0.55% | 298 |
| 1855 | 1,230 | 19 | 0 | 0.00% | 0 | 0.00% | 19 | 100.00% | |
| 1860 | 517 | 8,514 | 3,896 | 45.76% | 4,618 | 54.24% | 0 | 0.00% | 6,360 |
| 1870 | 1,424 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1880 | 2,864 | 24,101 | 11,213 | 46.53% | 12,877 | 53.43% | 11 | 0.05% | 13,468 |
| 1885 | 1,560 | 20,555 | 9,054 | 44.05% | 11,495 | 55.92% | 6 | 0.03% | 18,473 |
| 1890 | 3,445 | 5,758 | 2,513 | 43.64% | 2,818 | 48.94% | 427 | 7.42% | |
| 1895 | 2,742 | 493 | 239 | 48.48% | 253 | 51.32% | 1 | 0.20% | |
| 1901 | 4,277 | 12,705 | 5,495 | 43.25% | 7,172 | 56.45% | 38 | 0.30% | 12,609 |
| 1906 | 4,031 | 763 | 348 | 45.61% | 415 | 54.39% | 0 | 0.00% | 0 |
| 1911 | 4,871 | 5 | 3 | 60.00% | 2 | 40.00% | 0 | 0.00% | 0 |
| 1916 | 8,876 | 13 | 4 | 30.77% | 9 | 69.23% | 0 | 0.00% | 0 |
| 1921 | 3,820 | 17 | 6 | 35.29% | 7 | 41.18% | 4 | 23.53% | 0 |
| 1925 | 20,325 | 6 | 1 | 16.67% | 2 | 33.33% | 3 | 50.00% | 0 |
| 1930 | 19,325 | 354 | 150 | 42.37% | 204 | 57.63% | 0 | 0.00% | 349 |
| 1940 | 22,758 | 6,498 | 2,853 | 43.91% | 3,641 | 56.03% | 4 | 0.06% | 0 |
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