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Census data for Århus Købstad parish
| 1787 | 70 | 4,052 | 1,983 | 48.94% | 2,069 | 51.06% | 0 | 0.00% | 0 |
| 1801 | 251 | 4,103 | 1,986 | 48.40% | 2,115 | 51.55% | 2 | 0.05% | 0 |
| 1834 | 227 | 6,791 | 3,422 | 50.39% | 3,357 | 49.43% | 12 | 0.18% | 209 |
| 1840 | 212 | 7,144 | 3,646 | 51.04% | 3,487 | 48.81% | 11 | 0.15% | 0 |
| 1845 | 251 | 7,886 | 4,016 | 50.93% | 3,847 | 48.78% | 23 | 0.29% | 0 |
| 1850 | 281 | 7,883 | 3,962 | 50.26% | 3,917 | 49.69% | 4 | 0.05% | 0 |
| 1855 | 3,854 | 56 | 16 | 28.57% | 18 | 32.14% | 22 | 39.29% | |
| 1860 | 1,229 | 10,988 | 5,606 | 51.02% | 5,380 | 48.96% | 2 | 0.02% | 0 |
| 1870 | 2,355 | 58 | 26 | 44.83% | 27 | 46.55% | 5 | 8.62% | |
| 1880 | 4,232 | 25,480 | 12,630 | 49.57% | 12,845 | 50.41% | 5 | 0.02% | 1,474 |
| 1890 | 7,901 | 32 | 12 | 37.50% | 15 | 46.88% | 5 | 15.63% | |
| 1895 | 0 | 1 | 0 | 0.00% | 0 | 0.00% | 1 | 100.00% | |
| 1901 | 12,107 | 52,476 | 25,580 | 48.75% | 26,891 | 51.24% | 5 | 0.01% | 0 |
| 1906 | 12,729 | 24,011 | 11,217 | 46.72% | 12,784 | 53.24% | 10 | 0.04% | 0 |
| 1911 | 14,658 | 527 | 224 | 42.50% | 303 | 57.50% | 0 | 0.00% | 447 |
| 1916 | 15,755 | 749 | 310 | 41.39% | 438 | 58.48% | 1 | 0.13% | 194 |
| 1921 | 11,608 | 58 | 17 | 29.31% | 21 | 36.21% | 20 | 34.48% | 0 |
| 1925 | 22,263 | 66 | 28 | 42.42% | 34 | 51.52% | 4 | 6.06% | 0 |
| 1930 | 49,405 | 21 | 9 | 42.86% | 12 | 57.14% | 0 | 0.00% | 0 |
| 1940 | 66,668 | 29 | 12 | 41.38% | 17 | 58.62% | 0 | 0.00% | 0 |
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