| Year | Pop. | ±% p.a. |
|---|
| 1793 | 1,440 | — |
|---|
| 1800 | 1,262 | −1.87% |
|---|
| 1806 | 1,525 | +3.21% |
|---|
| 1821 | 1,622 | +0.41% |
|---|
| 1831 | 1,590 | −0.20% |
|---|
| 1836 | 1,672 | +1.01% |
|---|
| 1841 | 1,758 | +1.01% |
|---|
| 1846 | 2,034 | +2.96% |
|---|
| 1851 | 2,040 | +0.06% |
|---|
| 1856 | 2,200 | +1.52% |
|---|
| 1861 | 2,501 | +2.60% |
|---|
| 1866 | 2,731 | +1.78% |
|---|
| 1872 | 2,824 | +0.56% |
|---|
| 1876 | 3,061 | +2.04% |
|---|
| 1881 | 3,275 | +1.36% |
|---|
| 1886 | 3,688 | +2.40% |
|---|
| 1891 | 4,405 | +3.62% |
|---|
| 1896 | 4,901 | +2.16% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 5,969 | +4.02% |
|---|
| 1906 | 6,703 | +2.35% |
|---|
| 1911 | 7,011 | +0.90% |
|---|
| 1921 | 7,041 | +0.04% |
|---|
| 1926 | 8,507 | +3.86% |
|---|
| 1931 | 11,707 | +6.59% |
|---|
| 1936 | 12,167 | +0.77% |
|---|
| 1946 | 11,741 | −0.36% |
|---|
| 1954 | 12,363 | +0.65% |
|---|
| 1962 | 13,634 | +1.23% |
|---|
| 1968 | 14,274 | +0.77% |
|---|
| 1975 | 16,391 | +2.00% |
|---|
| 1982 | 16,275 | −0.10% |
|---|
| 1990 | 17,986 | +1.26% |
|---|
| 1999 | 18,541 | +0.34% |
|---|
| 2007 | 18,989 | +0.30% |
|---|
| 2012 | 20,536 | +1.58% |
|---|
| 2017 | 20,479 | −0.06% |
|---|
|