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Census data for Horsens købstad
| 1769 | 0 | 2,589 | 1,165 | 45.00% | 1,424 | 55.00% | 0 | 0.00% | 2,589 |
| 1787 | 81 | 2,220 | 1,175 | 52.93% | 1,044 | 47.03% | 1 | 0.05% | 0 |
| 1801 | 145 | 2,398 | 1,211 | 50.50% | 1,187 | 49.50% | 0 | 0.00% | 0 |
| 1834 | 181 | 4,847 | 2,462 | 50.79% | 2,385 | 49.21% | 0 | 0.00% | 0 |
| 1840 | 169 | 4,946 | 2,475 | 50.04% | 2,470 | 49.94% | 1 | 0.02% | 0 |
| 1845 | 135 | 5,062 | 2,485 | 49.09% | 2,576 | 50.89% | 1 | 0.02% | 0 |
| 1850 | 184 | 5,833 | 2,782 | 47.69% | 3,051 | 52.31% | 0 | 0.00% | 0 |
| 1855 | 329 | 3 | 2 | 66.67% | 1 | 33.33% | 0 | 0.00% | 0 |
| 1860 | 849 | 8,981 | 4,629 | 51.54% | 4,346 | 48.39% | 6 | 0.07% | 0 |
| 1870 | 1,725 | 32 | 13 | 40.63% | 18 | 56.25% | 1 | 3.13% | 0 |
| 1880 | 2,108 | 12,672 | 6,257 | 49.38% | 6,405 | 50.54% | 10 | 0.08% | 10,229 |
| 1890 | 4,064 | 17,455 | 8,298 | 47.54% | 9,156 | 52.45% | 1 | 0.01% | 16,187 |
| 1901 | 5,496 | 22,463 | 10,638 | 47.36% | 11,825 | 52.64% | 0 | 0.00% | 0 |
| 1906 | 5,756 | 839 | 384 | 45.77% | 454 | 54.11% | 1 | 0.12% | 0 |
| 1911 | 6,398 | 419 | 192 | 45.82% | 227 | 54.18% | 0 | 0.00% | 390 |
| 1916 | 7,410 | 13 | 6 | 46.15% | 7 | 53.85% | 0 | 0.00% | 0 |
| 1921 | 5,905 | 36 | 19 | 52.78% | 16 | 44.44% | 1 | 2.78% | 0 |
| 1925 | 10,950 | 9 | 5 | 55.56% | 4 | 44.44% | 0 | 0.00% | 0 |
| 1930 | 17,604 | 16 | 11 | 68.75% | 5 | 31.25% | 0 | 0.00% | 0 |
| 1940 | 19,953 | 272 | 134 | 49.26% | 138 | 50.74% | 0 | 0.00% | 0 |
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