| Year | Pop. | ±% p.a. |
|---|
| 1793 | 4,000 | — |
|---|
| 1800 | 2,866 | −4.65% |
|---|
| 1806 | 5,256 | +10.64% |
|---|
| 1821 | 3,065 | −3.53% |
|---|
| 1831 | 3,774 | +2.10% |
|---|
| 1836 | 4,082 | +1.58% |
|---|
| 1841 | 4,465 | +1.81% |
|---|
| 1846 | 4,684 | +0.96% |
|---|
| 1851 | 4,655 | −0.12% |
|---|
| 1856 | 5,210 | +2.28% |
|---|
| 1861 | 5,574 | +1.36% |
|---|
| 1866 | 8,455 | +8.69% |
|---|
| 1872 | 8,138 | −0.63% |
|---|
| 1876 | 9,310 | +3.42% |
|---|
| 1881 | 10,878 | +3.16% |
|---|
| 1886 | 11,760 | +1.57% |
|---|
| 1891 | 12,031 | +0.46% |
|---|
| 1896 | 11,274 | −1.29% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 11,604 | +0.58% |
|---|
| 1906 | 11,923 | +0.54% |
|---|
| 1911 | 12,091 | +0.28% |
|---|
| 1921 | 10,836 | −1.09% |
|---|
| 1926 | 12,134 | +2.29% |
|---|
| 1931 | 11,854 | −0.47% |
|---|
| 1936 | 13,009 | +1.88% |
|---|
| 1946 | 14,055 | +0.78% |
|---|
| 1954 | 17,120 | +2.50% |
|---|
| 1962 | 20,191 | +2.08% |
|---|
| 1968 | 24,444 | +3.24% |
|---|
| 1975 | 26,166 | +0.98% |
|---|
| 1982 | 27,326 | +0.62% |
|---|
| 1990 | 28,328 | +0.45% |
|---|
| 1999 | 29,489 | +0.45% |
|---|
| 2007 | 30,212 | +0.30% |
|---|
| 2012 | 31,018 | +0.53% |
|---|
| 2017 | 29,554 | −0.96% |
|---|
|