Ottawa was first an Irish and French Christian settlement, but it is now has a very diverse population. About 24% of the population are foreign-born residents. Visible minority groups, or non-European whites, account for 23.7% of the population.
In 2011, the ethnic and racial composition of Ottawa was:
- White: 74.2% (28.4% Canadian, 24.3% English, 22.5% Irish, 21.5% French, 19.8% Scottish, 8.4% German, 4.9% Italian)
- Black: 5.7%
- Chinese: 4.0%
- South Asian: 3.9%
- Arab: 3.7%
- Southeast Asian: 1.6%
- Filipino: 1.2%
- Latin American: 1.2%
- West Asian: 0.9%
- Korean: 0.3%
- Japanese: 0.2%
- Other visible minority: 0.2%
- Multiple visible minorities: 0.7%
- Aboriginal: 2.1% (1.2% First Nations, 0.7% Metis, 0.1% Inuit, 0.1% other Aboriginal)
65% of the city’s population belongs to a Christian denomination, the most common of which is Roman Catholicism at 38%, followed by Anglicanism (6.5%), United Church (6.2%), Christian Orthodox (2%), Presbyterianism (1.5%), Baptist (1.2%) and Pentecostal (1.1%). The next-largest religion is Islam at 6.7%, followed by Hinduism (1.4%), Buddhism (1.3%) and Judaism (1.2%). About 23% of the population has no religious affiliation.