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Ontario Marginalization Index (ON-Marg)
map of souther n Ontario neighbourhoods

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Public Health Ontario


Ontario Community Health Profiles Partnership (OCHPP)


ON-Marg is a data tool that combines a wide range of demographic indicators into four distinct dimensions of marginalization. As a multifaceted index, ON-Marg measures multiple axes of deprivation in Ontario, including economic, ethno-racial, age-based and social marginalization.

It can be used for:

  • research
  • population health assessments
  • resource allocations and program planning
  • assessing health inequities

The 2016 ON-Marg

The 2016 version of ON-Marg was created in collaboration with the Centre for Urban Health Solutions at St. Michael’s Hospital, using data retrieved from the 2016 Canadian census. ON-Marg data is now available for 2001, 2006, 2011 and 2016 – making it possible to track changes in marginalization and health equity over time.

Data is available at the small area level, as well as larger geographies such as public health units and Local Health Integration Networks (LHINs).




Supporting Documents

User Guide

Outlines everything you need to know about using ON-Marg for completing your own analyses.

View the user guide »


Frequently Asked Questions

References the most common questions asked to help you use ON-Marg.

View the FAQs »


Social Determinants of Health Map

​​​The updated 2011 ON-Marg data is now included in our Social Determinants of Health (SDOH) Map, an interactive tool that shows the distribution of SDOH indicators across the province, LHINs and public health units.

View SDOH Map »


Additional Resources

Previous Versions of the ON-Marg Index

The 2011 update to ON-Marg combines data from several sources, including Statistics Canada, Taxfiler, the Municipal Property Assessment Corporation, the Registered Persons Database and the Immigration Refugees, Citizenship Canada (IRCC) Permanent Resident Database. Read the 2011 Technical Document for background information on the 2011 ON-Marg methodology, data sources and how the different dimensions were calculated.

The 2001 and 2006 versions of ON-Marg were created using Canadian census data. To access the 2001 and 2006 ON-Marg, please visit the Ontario Community Health Profiles Partnership (OCHPP) webpage.



About our Partners

The Centre for Urban Health Solutions is an inter-disciplinary research centre within St. Michael’s Hospital in Toronto. The Centre seeks to improve health in cities, especially for those experiencing marginalization and to reduce barriers to accessing factors essential to health, such as appropriate health care and quality housing.

SMH_CentreForUrbanHealthSolutions_web.pngON-Marg logo.png
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Page last updated: 2018-10-09 8:29 AM
Uncontrolled print copy. Valid only on day of Print: [date]
Page updated on [date/time] 2018-10-09 8:29 AM
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