| Year | Pop. | ±% p.a. |
|---|
| 1793 | 3,368 | — |
|---|
| 1800 | 3,595 | +0.94% |
|---|
| 1806 | 3,620 | +0.12% |
|---|
| 1821 | 3,780 | +0.29% |
|---|
| 1831 | 3,672 | −0.29% |
|---|
| 1836 | 4,235 | +2.89% |
|---|
| 1841 | 4,271 | +0.17% |
|---|
| 1846 | 4,394 | +0.57% |
|---|
| 1851 | 4,749 | +1.57% |
|---|
| 1856 | 4,400 | −1.51% |
|---|
| 1861 | 4,851 | +1.97% |
|---|
| 1866 | 4,853 | +0.01% |
|---|
| 1872 | 4,954 | +0.34% |
|---|
| 1876 | 5,021 | +0.34% |
|---|
| 1881 | 6,138 | +4.10% |
|---|
| 1886 | 6,345 | +0.67% |
|---|
| 1891 | 7,217 | +2.61% |
|---|
| 1896 | 6,659 | −1.60% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 7,279 | +1.80% |
|---|
| 1906 | 7,163 | −0.32% |
|---|
| 1911 | 6,790 | −1.06% |
|---|
| 1921 | 6,162 | −0.97% |
|---|
| 1926 | 7,241 | +3.28% |
|---|
| 1931 | 8,020 | +2.06% |
|---|
| 1936 | 7,465 | −1.42% |
|---|
| 1946 | 7,699 | +0.31% |
|---|
| 1954 | 8,153 | +0.72% |
|---|
| 1962 | 9,240 | +1.58% |
|---|
| 1968 | 19,941 | +13.68% |
|---|
| 1975 | 21,971 | +1.39% |
|---|
| 1982 | 22,550 | +0.37% |
|---|
| 1990 | 22,392 | −0.09% |
|---|
| 1999 | 22,947 | +0.27% |
|---|
| 2007 | 23,759 | +0.44% |
|---|
| 2012 | 26,773 | +2.42% |
|---|
| 2017 | 28,387 | +1.18% |
|---|
|