| Year | Pop. | ±% p.a. |
|---|
| 1793 | 20,874 | — |
|---|
| 1800 | 15,000 | −4.61% |
|---|
| 1806 | 14,615 | −0.43% |
|---|
| 1821 | 12,389 | −1.10% |
|---|
| 1831 | 14,040 | +1.26% |
|---|
| 1836 | 15,441 | +1.92% |
|---|
| 1841 | 20,077 | +5.39% |
|---|
| 1846 | 21,738 | +1.60% |
|---|
| 1851 | 24,330 | +2.28% |
|---|
| 1856 | 28,998 | +3.57% |
|---|
| 1861 | 30,212 | +0.82% |
|---|
| 1866 | 30,151 | −0.04% |
|---|
| 1872 | 28,299 | −1.05% |
|---|
| 1876 | 27,012 | −1.16% |
|---|
| 1881 | 27,854 | +0.62% |
|---|
| 1886 | 31,256 | +2.33% |
|---|
| 1891 | 33,334 | +1.30% |
|---|
| 1896 | 34,392 | +0.63% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 36,458 | +1.17% |
|---|
| 1906 | 36,694 | +0.13% |
|---|
| 1911 | 35,019 | −0.93% |
|---|
| 1921 | 29,473 | −1.71% |
|---|
| 1926 | 28,275 | −0.83% |
|---|
| 1931 | 26,452 | −1.32% |
|---|
| 1936 | 29,482 | +2.19% |
|---|
| 1946 | 29,472 | −0.00% |
|---|
| 1954 | 30,858 | +0.58% |
|---|
| 1962 | 28,648 | −0.92% |
|---|
| 1968 | 29,226 | +0.33% |
|---|
| 1975 | 28,155 | −0.53% |
|---|
| 1982 | 26,167 | −1.04% |
|---|
| 1990 | 25,561 | −0.29% |
|---|
| 1999 | 25,797 | +0.10% |
|---|
| 2009 | 25,317 | −0.19% |
|---|
| 2014 | 24,300 | −0.82% |
|---|
| 2020 | 23,410 | −0.62% |
|---|
|