With the exception of Ancestry (which requires a subscription) the links below take you to websites that offer the census free of charge.

Note that ALL the images are hosted by Library & Archives Canada, regardless of which website you visit.

Census Yr   Images Index Transcript
Pre-1851 - Library & Archives Canada (1842)  
- FamilySearch (1842)
- Library & Archives Canada (1842)  
- FamilySearch (1842)
- OntarioGenWeb’s Census Project
1851 - Library & Archives Canada
- Ancestry
- Library & Archives Canada
- FamilySearch
- Automated Genealogy
- Ancestry
- OntarioGenWeb’s Census Project
1861 - Library & Archives Canada
- Ancestry
- Library & Archives Canada
- FamilySearch
- Ancestry
- OntarioGenWeb’s Census Project
1871 - Library & Archives Canada  
- Ancestry
- Library & Archives Canada
- FamilySearch
- Ancestry
- OntarioGenWeb’s Census Project
1881 - Library & Archives Canada
- Ancestry
- Library & Archives Canada
- FamilySearch
- Ancestry
- OntarioGenWeb’s Census Project
1891 - Library & Archives Canada
- Ancestry
- Library & Archives Canada  
- FamilySearch
- Ancestry
- OntarioGenWeb’s Census Project
1901 - Library & Archives Canada
- Ancestry
- Library & Archives Canada
- Automated Genealogy
- FamilySearch
- Ancestry
- OntarioGenWeb’s Census Project
1911 - Library & Archives Canada
- Ancestry
- Library & Archives Canada
- Automated Genealogy
- Ancestry
- OntarioGenWeb’s Census Project  
1921 - Ancestry *free to view!*