Census data for Frederikssund parish
| 1787 | 8 | 190 | 98 | 51.58% | 92 | 48.42% | 0 | 0.00% | 0 |
| 1801 | 12 | 262 | 129 | 49.24% | 132 | 50.38% | 1 | 0.38% | 0 |
| 1834 | 13 | 395 | 199 | 50.38% | 196 | 49.62% | 0 | 0.00% | 0 |
| 1840 | 1 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1845 | 19 | 646 | 327 | 50.62% | 316 | 48.92% | 3 | 0.46% | 0 |
| 1850 | 25 | 612 | 310 | 50.65% | 302 | 49.35% | 0 | 0.00% | 0 |
| 1855 | 201 | 679 | 342 | 50.37% | 337 | 49.63% | 0 | 0.00% | 679 |
| 1860 | 36 | 763 | 402 | 52.69% | 361 | 47.31% | 0 | 0.00% | 0 |
| 1870 | 142 | 1,306 | 662 | 50.69% | 644 | 49.31% | 0 | 0.00% | 1,286 |
| 1880 | 329 | 1,522 | 790 | 51.91% | 732 | 48.09% | 0 | 0.00% | 1,507 |
| 1890 | 553 | 1,834 | 896 | 48.85% | 938 | 51.15% | 0 | 0.00% | 1,834 |
| 1901 | 689 | 2,329 | 1,123 | 48.22% | 1,206 | 51.78% | 0 | 0.00% | 2,187 |
| 1906 | 719 | 66 | 32 | 48.48% | 34 | 51.52% | 0 | 0.00% | 0 |
| 1911 | 803 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1916 | 886 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1921 | 754 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1925 | 1,183 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1930 | 1,863 | 3,334 | 1,575 | 47.24% | 1,757 | 52.70% | 2 | 0.06% | 1 |
| 1940 | 2,162 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |