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Folketællinger i Holbæk Købstad
| 1787 | 42 | 1.199 | 579 | 48,29% | 620 | 51,71% | 0 | 0,00% | 0 |
| 1801 | 59 | 1.332 | 678 | 50,90% | 654 | 49,10% | 0 | 0,00% | 0 |
| 1834 | 62 | 2.007 | 1.035 | 51,57% | 972 | 48,43% | 0 | 0,00% | 0 |
| 1840 | 65 | 2.110 | 1.134 | 53,74% | 976 | 46,26% | 0 | 0,00% | 0 |
| 1845 | 65 | 2.351 | 1.213 | 51,60% | 1.138 | 48,40% | 0 | 0,00% | 0 |
| 1850 | 102 | 2.638 | 1.329 | 50,38% | 1.307 | 49,55% | 2 | 0,08% | 103 |
| 1855 | 122 | 635 | 308 | 48,50% | 285 | 44,88% | 42 | 6,61% | |
| 1860 | 105 | 2.971 | 1.449 | 48,77% | 1.522 | 51,23% | 0 | 0,00% | 0 |
| 1870 | 484 | 7 | 4 | 57,14% | 1 | 14,29% | 2 | 28,57% | |
| 1880 | 596 | 3.288 | 1.595 | 48,51% | 1.693 | 51,49% | 0 | 0,00% | 1.773 |
| 1890 | 1.066 | 0 | 0 | 0,00% | 0 | 0,00% | 0 | 0,00% | |
| 1901 | 1.295 | 4.620 | 2.188 | 47,36% | 2.432 | 52,64% | 0 | 0,00% | 4.331 |
| 1906 | 1.568 | 5.332 | 2.525 | 47,36% | 2.807 | 52,64% | 0 | 0,00% | 0 |
| 1911 | 1.785 | 21 | 8 | 38,10% | 5 | 23,81% | 8 | 38,10% | |
| 1916 | 2.785 | 0 | 0 | 0,00% | 0 | 0,00% | 0 | 0,00% | |
| 1921 | 3.088 | 14 | 2 | 14,29% | 5 | 35,71% | 7 | 50,00% | |
| 1925 | 4.872 | 0 | 0 | 0,00% | 0 | 0,00% | 0 | 0,00% | |
| 1930 | 8.898 | 12.968 | 6.331 | 48,82% | 6.614 | 51,00% | 23 | 0,18% | 12.667 |
| 1940 | 8.944 | 0 | 0 | 0,00% | 0 | 0,00% | 0 | 0,00% | |
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