Census data for Gundslev parish
| 1787 | 15 | 594 | 296 | 49.83% | 298 | 50.17% | 0 | 0.00% | 0 |
| 1801 | 17 | 627 | 326 | 51.99% | 301 | 48.01% | 0 | 0.00% | 0 |
| 1834 | 27 | 821 | 415 | 50.55% | 406 | 49.45% | 0 | 0.00% | 0 |
| 1840 | 17 | 900 | 443 | 49.22% | 456 | 50.67% | 1 | 0.11% | 0 |
| 1845 | 42 | 986 | 481 | 48.78% | 505 | 51.22% | 0 | 0.00% | 0 |
| 1850 | 31 | 1,033 | 523 | 50.63% | 509 | 49.27% | 1 | 0.10% | 0 |
| 1855 | 42 | 1,074 | 546 | 50.84% | 528 | 49.16% | 0 | 0.00% | 0 |
| 1860 | 20 | 1,102 | 555 | 50.36% | 547 | 49.64% | 0 | 0.00% | 0 |
| 1870 | 68 | 3 | 1 | 33.33% | 2 | 66.67% | 0 | 0.00% | 0 |
| 1880 | 95 | 1,151 | 592 | 51.43% | 559 | 48.57% | 0 | 0.00% | 796 |
| 1890 | 89 | 1,101 | 549 | 49.86% | 551 | 50.05% | 1 | 0.09% | 0 |
| 1901 | 754 | 1,129 | 569 | 50.40% | 560 | 49.60% | 0 | 0.00% | 1,125 |
| 1906 | 92 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1911 | 102 | 1,154 | 553 | 47.92% | 594 | 51.47% | 7 | 0.61% | 898 |
| 1916 | 124 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |
| 1921 | 102 | 2 | 1 | 50.00% | 1 | 50.00% | 0 | 0.00% | 0 |
| 1925 | 124 | 1,192 | 594 | 49.83% | 598 | 50.17% | 0 | 0.00% | 1,119 |
| 1930 | 98 | 4 | 2 | 50.00% | 2 | 50.00% | 0 | 0.00% | 0 |
| 1940 | 580 | 0 | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | |