| Year | Pop. | ±% p.a. |
|---|
| 1793 | 4,841 | — |
|---|
| 1800 | 4,726 | −0.34% |
|---|
| 1806 | 5,020 | +1.01% |
|---|
| 1821 | 5,736 | +0.89% |
|---|
| 1831 | 6,240 | +0.85% |
|---|
| 1836 | 6,363 | +0.39% |
|---|
| 1841 | 7,431 | +3.15% |
|---|
| 1846 | 7,328 | −0.28% |
|---|
| 1851 | 7,719 | +1.05% |
|---|
| 1856 | 8,663 | +2.33% |
|---|
| 1861 | 10,557 | +4.03% |
|---|
| 1866 | 10,877 | +0.60% |
|---|
| 1872 | 13,234 | +3.32% |
|---|
| 1876 | 14,398 | +2.13% |
|---|
| 1881 | 17,221 | +3.65% |
|---|
| 1886 | 18,329 | +1.25% |
|---|
| 1891 | 18,863 | +0.58% |
|---|
| 1896 | 19,799 | +0.97% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 20,826 | +1.02% |
|---|
| 1906 | 21,520 | +0.66% |
|---|
| 1911 | 23,209 | +1.52% |
|---|
| 1921 | 21,173 | −0.91% |
|---|
| 1926 | 23,338 | +1.97% |
|---|
| 1931 | 24,221 | +0.75% |
|---|
| 1936 | 23,622 | −0.50% |
|---|
| 1946 | 20,859 | −1.24% |
|---|
| 1954 | 24,215 | +1.88% |
|---|
| 1962 | 27,214 | +1.47% |
|---|
| 1968 | 32,028 | +2.75% |
|---|
| 1975 | 35,399 | +1.44% |
|---|
| 1982 | 36,061 | +0.27% |
|---|
| 1990 | 34,989 | −0.38% |
|---|
| 1999 | 33,546 | −0.47% |
|---|
| 2007 | 32,667 | −0.33% |
|---|
| 2012 | 30,994 | −1.05% |
|---|
| 2017 | 29,944 | −0.69% |
|---|
|