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Census data for Sunds Herred
| 1787 | 18 | 301 | 11,185 | 5,573 | 49.83% | 5,611 | 50.17% | 1 | 0.01% | 0 |
| 1801 | 18 | 418 | 12,170 | 6,053 | 49.74% | 6,117 | 50.26% | 0 | 0.00% | 1 |
| 1834 | 18 | 553 | 17,430 | 8,682 | 49.81% | 8,747 | 50.18% | 1 | 0.01% | 456 |
| 1840 | 18 | 521 | 18,375 | 9,207 | 50.11% | 9,167 | 49.89% | 1 | 0.01% | 49 |
| 1845 | 18 | 631 | 19,149 | 9,543 | 49.84% | 9,600 | 50.13% | 6 | 0.03% | 79 |
| 1850 | 18 | 597 | 19,135 | 9,484 | 49.56% | 9,636 | 50.36% | 15 | 0.08% | 0 |
| 1855 | 18 | 2,494 | 22,339 | 11,174 | 50.02% | 11,140 | 49.87% | 25 | 0.11% | 4,953 |
| 1860 | 18 | 621 | 22,343 | 10,883 | 48.71% | 10,838 | 48.51% | 622 | 2.78% | 1,277 |
| 1870 | 18 | 2,094 | 14,218 | 7,068 | 49.71% | 7,147 | 50.27% | 3 | 0.02% | 12,053 |
| 1880 | 18 | 3,311 | 26,524 | 13,121 | 49.47% | 13,402 | 50.53% | 1 | 0.00% | 15,496 |
| 1890 | 18 | 4,731 | 28,705 | 14,123 | 49.20% | 14,580 | 50.79% | 2 | 0.01% | 16,704 |
| 1901 | 18 | 16,655 | 32,892 | 15,737 | 47.84% | 16,228 | 49.34% | 927 | 2.82% | 31,302 |
| 1906 | 18 | 6,080 | 18,797 | 9,705 | 51.63% | 9,089 | 48.35% | 3 | 0.02% | 0 |
| 1911 | 18 | 7,061 | 10,105 | 5,041 | 49.89% | 5,064 | 50.11% | 0 | 0.00% | 9,307 |
| 1916 | 18 | 7,474 | 7,142 | 3,515 | 49.22% | 3,568 | 49.96% | 59 | 0.83% | 6,458 |
| 1921 | 18 | 5,927 | 7,171 | 3,595 | 50.13% | 3,546 | 49.45% | 30 | 0.42% | 6,753 |
| 1925 | 18 | 10,881 | 6,055 | 3,031 | 50.06% | 3,019 | 49.86% | 5 | 0.08% | 5,504 |
| 1930 | 18 | 10,596 | 26,207 | 12,560 | 47.93% | 13,449 | 51.32% | 198 | 0.76% | 23,826 |
| 1940 | 18 | 24,077 | 1,787 | 942 | 52.71% | 838 | 46.89% | 7 | 0.39% | 1,405 |
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