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Folketællinger i Sengeløse sogn
| 1787 | 20 | 609 | 302 | 49,59% | 307 | 50,41% | 0 | 0,00% | 0 |
| 1801 | 35 | 774 | 391 | 50,52% | 383 | 49,48% | 0 | 0,00% | 0 |
| 1834 | 31 | 1.039 | 525 | 50,53% | 514 | 49,47% | 0 | 0,00% | 0 |
| 1840 | 33 | 1.079 | 547 | 50,70% | 532 | 49,30% | 0 | 0,00% | 0 |
| 1845 | 32 | 1.161 | 595 | 51,25% | 566 | 48,75% | 0 | 0,00% | 0 |
| 1850 | 35 | 1.302 | 675 | 51,84% | 627 | 48,16% | 0 | 0,00% | 0 |
| 1855 | 49 | 1.357 | 686 | 50,55% | 671 | 49,45% | 0 | 0,00% | 1.357 |
| 1860 | 40 | 1.426 | 713 | 50,00% | 713 | 50,00% | 0 | 0,00% | 0 |
| 1870 | 78 | 1.429 | 713 | 49,90% | 716 | 50,10% | 0 | 0,00% | 25 |
| 1880 | 100 | 1.291 | 664 | 51,43% | 627 | 48,57% | 0 | 0,00% | 1.291 |
| 1890 | 103 | 1.250 | 641 | 51,28% | 609 | 48,72% | 0 | 0,00% | 1.250 |
| 1901 | 805 | 1.211 | 625 | 51,61% | 585 | 48,31% | 1 | 0,08% | 1.211 |
| 1906 | 91 | 29 | 13 | 44,83% | 16 | 55,17% | 0 | 0,00% | 0 |
| 1911 | 114 | 1.113 | 539 | 48,43% | 574 | 51,57% | 0 | 0,00% | 1.113 |
| 1916 | 111 | 0 | 0 | 0,00% | 0 | 0,00% | 0 | 0,00% | |
| 1921 | 92 | 1.202 | 661 | 54,99% | 541 | 45,01% | 0 | 0,00% | 0 |
| 1925 | 136 | 0 | 0 | 0,00% | 0 | 0,00% | 0 | 0,00% | |
| 1930 | 104 | 0 | 0 | 0,00% | 0 | 0,00% | 0 | 0,00% | |
| 1940 | 875 | 0 | 0 | 0,00% | 0 | 0,00% | 0 | 0,00% | |
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