Demographics
| Historical populations | ||
|---|---|---|
| Year | Pop. | ±% |
| 1841 | 610 | — |
| 1871 | 2,929 | +380.2% |
| 1881 | 3,874 | +32.3% |
| 1891 | 6,692 | +72.7% |
| 1901 | 8,176 | +22.2% |
| 1911 | 9,947 | +21.7% |
| 1921 | 14,877 | +49.6% |
| 1931 | 18,191 | +22.3% |
| 1941 | 18,734 | +3.0% |
| 1951 | 34,697 | +85.2% |
| 1961 | 50,976 | +46.9% |
| 1971 | 57,644 | +13.1% |
| 1981 | 50,829 | −11.8% |
| 1991 | 74,167 | +45.9% |
| 1996 | 72,738 | −1.9% |
| 2001 | 70,876 | −2.6% |
| 2006 | 71,419 | +0.8% |
| 2011 | 72,366 | +1.3% |
Population figures reflect Sarnia's amalgamation with Clearwater in 1991. |
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In the 2011 Census, the City of Sarnia had a population of 72,366, an increase of 1.3% from the 2006 Census. With a land area of 164.71 km2 (63.59 sq mi), it had a population density of 439.354/km2 (1,137.92/sq mi) in 2011.
In 2006, Sarnia had a predominately white population; only 6.13% were non-European. Of those, 34.06% were aboriginal. In 2006, 85.32% of Sarnians counted English as their mother tongue, 3.11% listed French, 0.29% counted both of those languages, and 9.76% counted another language as their mother tongue. The median age in Sarnia is 43.2 which is older than the Canadian median of 40.95, indicative of Sarnia's aging population. According to the most recent data on religion (2001 Census), Sarnia is predominately Christian as 32.8% of the population were Catholic, 45.94% were Protestant, 3% were of other Christian faiths, 0.37% were Muslim, 0.19% were Jewish, 0.81% were other faiths. 16.86% professed no religious preference or were atheists.
The median income in Sarnia (all census families, 2006) is $69,731 which is roughly the same as Ontario as a whole with a median income of $69,156. The median cost of a home in Sarnia of $175,214 (2006) is much lower than Ontario with a median value of $297,479.
| Canada 2006 Census | Population | % of Total Population | |
|---|---|---|---|
| Visible minority group |
South Asian | 790 | 1.1% |
| Chinese | 555 | 0.8% | |
| Black | 530 | 0.8% | |
| Filipino | 230 | 0.3% | |
| Latin American | 235 | 0.3% | |
| Arab | 165 | 0.2% | |
| Southeast Asian | 100 | 0.1% | |
| West Asian | 10 | 0% | |
| Korean | 35 | 0% | |
| Japanese | 45 | 0.1% | |
| Other visible minority | 40 | 0.1% | |
| Mixed visible minority | 155 | 0.2% | |
| Total visible minority population | 2,885 | 4.1% | |
| Aboriginal group |
First Nations | 1,040 | 1.5% |
| Métis | 415 | 0.6% | |
| Inuit | 0 | 0% | |
| Total Aboriginal population | 1,495 | 2.1% | |
| White | 65,955 | 93.8% | |
| Total population | 70,335 | 100% | |
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