| Year | Pop. | ±% p.a. |
|---|
| 1793 | 3,736 | — |
|---|
| 1800 | 4,480 | +2.63% |
|---|
| 1806 | 4,544 | +0.24% |
|---|
| 1821 | 4,977 | +0.61% |
|---|
| 1831 | 5,318 | +0.66% |
|---|
| 1836 | 5,457 | +0.52% |
|---|
| 1841 | 5,978 | +1.84% |
|---|
| 1846 | 6,095 | +0.39% |
|---|
| 1851 | 7,386 | +3.92% |
|---|
| 1856 | 9,346 | +4.82% |
|---|
| 1861 | 10,598 | +2.55% |
|---|
| 1866 | 11,704 | +2.01% |
|---|
| 1872 | 12,927 | +1.67% |
|---|
| 1876 | 15,506 | +4.65% |
|---|
| 1881 | 16,388 | +1.11% |
|---|
| 1886 | 17,907 | +1.79% |
|---|
| 1891 | 18,361 | +0.50% |
|---|
| 1896 | 19,377 | +1.08% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 20,478 | +1.11% |
|---|
| 1906 | 21,637 | +1.11% |
|---|
| 1911 | 21,811 | +0.16% |
|---|
| 1921 | 21,806 | −0.00% |
|---|
| 1926 | 20,589 | −1.14% |
|---|
| 1931 | 20,381 | −0.20% |
|---|
| 1936 | 20,406 | +0.02% |
|---|
| 1946 | 19,703 | −0.35% |
|---|
| 1954 | 21,222 | +0.93% |
|---|
| 1962 | 21,882 | +0.38% |
|---|
| 1968 | 26,583 | +3.30% |
|---|
| 1975 | 29,677 | +1.59% |
|---|
| 1982 | 27,668 | −1.00% |
|---|
| 1990 | 26,682 | −0.45% |
|---|
| 1999 | 25,844 | −0.35% |
|---|
| 2007 | 24,591 | −0.62% |
|---|
| 2012 | 23,529 | −0.88% |
|---|
| 2017 | 22,671 | −0.74% |
|---|
|