Census data for Sønderborg County
| 1769 | 3 | 4 | 0 | 0.00% | 805 | 403 | 50.06% | 402 | 49.94% | 0 | 0.00% |
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| 1803 | 3 | 20 | 638 | 11.43% | 23,653 | 11,435 | 48.34% | 12,214 | 51.64% | 4 | 0.02% |
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| 1835 | 3 | 20 | 572 | 0.00% | 2 | 1 | 50.00% | 0 | 0.00% | 1 | 50.00% |
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| 1840 | 3 | 20 | 619 | 0.00% | 8 | 4 | 50.00% | 1 | 12.50% | 3 | 37.50% |
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| 1845 | 3 | 20 | 500 | 11.08% | 29,773 | 14,542 | 48.84% | 15,224 | 51.13% | 7 | 0.02% |
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| 1850 | 3 | 20 | 0 | 0.00% | 1 | 1 | 100.00% | 0 | 0.00% | 0 | 0.00% |
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| 1855 | 3 | 20 | 754 | 0.00% | 2 | 1 | 50.00% | 0 | 0.00% | 1 | 50.00% |
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| 1860 | 3 | 20 | 974 | 77.52% | 31,870 | 15,472 | 48.55% | 16,383 | 51.41% | 15 | 0.05% |
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| 1921 | 3 | 20 | 6,085 | 100.00% | 2,606 | 1,258 | 48.27% | 1,342 | 51.50% | 6 | 0.23% |
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| 1925 | 3 | 20 | 7,780 | 0.00% | 32 | 14 | 43.75% | 4 | 12.50% | 14 | 43.75% |
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| 1930 | 3 | 20 | 9,184 | 0.00% | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% |
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| 1940 | 3 | 20 | 23,617 | 100.00% | 1,287 | 663 | 51.52% | 614 | 47.71% | 10 | 0.78% |