Census data for Sønderborg County
| 1769 | 3 | 4 | 12 | 805 | 405 | 50.31% | 400 | 49.69% | 0 | 0.00% | |
| 1803 | 3 | 20 | 1,465 | 23,653 | 11,438 | 48.36% | 12,211 | 51.63% | 4 | 0.02% | 14,351 |
| 1835 | 3 | 20 | 572 | 3 | 2 | 66.67% | 0 | 0.00% | 1 | 33.33% | 0 |
| 1840 | 3 | 20 | 619 | 8 | 4 | 50.00% | 3 | 37.50% | 1 | 12.50% | 0 |
| 1845 | 3 | 20 | 500 | 29,772 | 14,550 | 48.87% | 15,215 | 51.11% | 7 | 0.02% | 11,795 |
| 1855 | 3 | 20 | 754 | 2 | 2 | 100.00% | 0 | 0.00% | 0 | 0.00% | 0 |
| 1860 | 3 | 20 | 974 | 31,870 | 15,484 | 48.58% | 16,373 | 51.37% | 13 | 0.04% | 1,968 |
| 1910 | 3 | 20 | 1,112 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1921 | 3 | 20 | 6,085 | 3,043 | 1,480 | 48.64% | 1,563 | 51.36% | 0 | 0.00% | 0 |
| 1925 | 3 | 20 | 7,780 | 55 | 28 | 50.91% | 27 | 49.09% | 0 | 0.00% | 0 |
| 1930 | 3 | 20 | 9,184 | 39 | 17 | 43.59% | 22 | 56.41% | 0 | 0.00% | 0 |
| 1940 | 3 | 20 | 23,617 | 1,394 | 724 | 51.94% | 670 | 48.06% | 0 | 0.00% | 0 |