| Year | Pop. | ±% p.a. |
|---|
| 1793 | 3,000 | — |
|---|
| 1800 | 1,806 | −6.99% |
|---|
| 1806 | 3,107 | +9.46% |
|---|
| 1821 | 3,710 | +1.19% |
|---|
| 1831 | 3,912 | +0.53% |
|---|
| 1836 | 3,926 | +0.07% |
|---|
| 1841 | 3,971 | +0.23% |
|---|
| 1846 | 3,993 | +0.11% |
|---|
| 1851 | 4,960 | +4.43% |
|---|
| 1856 | 8,851 | +12.28% |
|---|
| 1861 | 8,890 | +0.09% |
|---|
| 1866 | 10,630 | +3.64% |
|---|
| 1872 | 10,592 | −0.06% |
|---|
| 1876 | 11,763 | +2.66% |
|---|
| 1881 | 13,092 | +2.16% |
|---|
| 1886 | 15,304 | +3.17% |
|---|
| 1891 | 16,384 | +1.37% |
|---|
| 1896 | 17,192 | +0.97% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 18,535 | +1.52% |
|---|
| 1906 | 19,042 | +0.54% |
|---|
| 1911 | 21,026 | +2.00% |
|---|
| 1921 | 22,614 | +0.73% |
|---|
| 1926 | 23,364 | +0.65% |
|---|
| 1931 | 24,854 | +1.24% |
|---|
| 1936 | 26,657 | +1.41% |
|---|
| 1946 | 18,469 | −3.60% |
|---|
| 1954 | 25,625 | +4.18% |
|---|
| 1962 | 33,443 | +3.38% |
|---|
| 1968 | 34,495 | +0.52% |
|---|
| 1975 | 31,659 | −1.22% |
|---|
| 1982 | 30,558 | −0.50% |
|---|
| 1990 | 29,544 | −0.42% |
|---|
| 1999 | 29,553 | +0.00% |
|---|
| 2007 | 30,392 | +0.35% |
|---|
| 2012 | 28,622 | −1.19% |
|---|
| 2017 | 28,965 | +0.24% |
|---|
|