This is from the Annual collection of data from all libraries by the Ontario Ministry of Tourism, Culture and Sport.
 
 
 
It’s also supported by the Market Probe Canada FOPL Public Opinion Poll: https://www.slideshare.net/stephenabram1/market-probe-fopl-presentation-20150509v7animated-68588314

In general every dollar invested in libraries generates over $6 in local, frontline economic impact benefiting regular Ontarians

There are a ton of studies in this area and a number of Ontario studies.  Here’s a list but the first one in Ontario was the TPL MPI study
TPL MPI: 
Other value studies: (Kim Silk maintains a list here http://libraryresearchnetwork.org/

TPL Sources for their Public Library Economic Impact Study

I thought folks might find the sources used for the Toronto Public Library economic impact study released in the last few weeks handy:

You can find the study here (66 page PDF):

http://ourpubliclibrary.to/wp-content/uploads/2013/12/RotmanStudy.pdf

So Much More: The Economic Impact of the Toronto Public Library on the City of Toronto
Halbur, T. (2011, September 20). Public Libraries are Natural Town Squares. Planetizen: The Urban Planning, Design, and Development Network. Retrieved from:
Johnson, C. A. (2010). Do public libraries contribute to social capital?: A preliminary investigation
 into the relationship. Library & Information Science Research, 32(2), 147–155.
doi:10.1016/j.lisr.2009.12.006
Ko, Y. M. (2012). An economic valuation study of public libraries in Korea. Library & Information
Science Research, 34(2). Retrieved from:
Kretzmann, J. (2005, December). The Engaged Library: Chicago Stories of Community Building.
Urban Libraries Council . Retrieved from
Leckie, G. J., & Hopkins, J. (2002). The Public Place of Central Libraries: Findings from Toronto
and Vancouver. Library Quarterly, 72 (3), 326–72. Retrieved from:
Library Board of Queensland (2012). The Library Dividend Summary Report: A guide to the socio-
economic value of Queensland’s public libraries. State Library of Queensland. Retrieved from:
report.pdf
McClure, C. R., Fraser, B. T., Nelson, T. W., & Robbins, J. B. (2001). Economic Benefits and Impacts
from Public Libraries in the State of Florida. Final Report.Retrieved from:
Missingham, R. (2005). Libraries and economic value: a review of recent studies. Performance Measurement and Metrics,6 (3), 142–158. doi:10.1108/14678040510636711
Morris, A., Sumsion, J., & Hawkins, M. (2002). Economic Value of Public Libraries in the UK. Libri, 52 (2), 78–87. doi:10.1515/LIBR.2002.78
Newman, R. (2012). Economic Impact of Libraries in New York City. New York, NY. Retrieved from:
Newman, W. (2008). Third generation public libraries: Visionary Thinking and Service Development in Public Libraries (to 2020) and Potential Application in Ontario. Toronto: Ontario Ministry of Tourism and Culture. Retrieved from:
Ontario Libraries and Community Information Branch. (1995). The Economic and Job Creation Benefits of Ontario Public and First Nations Libraries. Ontario Libraries and Community Information Branch.
PEW Charitable Trusts (2012) The Library in the City: Changing Demands and a Challenging Future. Retrieved from:
Poll, R. (2012). Can we quantify the library’s influence? Creating an ISO standard for impact assessment. Performance Measurement and Metrics, 13 (2), 121–130. doi:10.1108/14678041211241332
Rao, G. C. (2012). The Great Equalizer: The Case For Investing In the Toronto Public Library (p. 42). Toronto: Canadian Centre for Policy Alternatives. Retrieved from:
Saskatchewan Learning Provincial Library. (2005). Public Libraries: Contributing to the Economic, Social Well-Being and Lifelong Learning of Saskatchewan People. Retrieved from:

The following articles and reports have been reviewed in preparation for the research on the

So Much More: The Economic Impact of Toronto Public Library System on the City of Toronto. Aabø, S. (2005a).
Are public libraries worth their price? New Library World, 106 (11/12), 487–495. Retrieved from:
Aabø, S. (2005b). Valuing the benefits of public libraries. Information Economics and Policy, 17 (2), 175–198. doi:10.1016/j.infoecopol.2004.05.003
Americans for the Arts. (2012). Arts & Economic Prosperity IV: Economic Impact of the Nonprofit
Arts & Culture Industry. Washington, DC: Americans for the Arts.
Americans for Libraries Council (2007). Worth their Weight: An Assessment of the Evolving Field of Library Valuation. Retrieved from:
Barron, D. (2005). The Economic impact of public libraries on South Carolina. Columbia, SC: University of South Carolina, College of Mass Communications and Information Studies, School of Library and Information Science. Retrieved from:
Berk and Associates. (2005). The Seattle Public Library central library: economic benefits assessment: the transformative power of a library to redefine learning, community, and economic development. Seattle, Washington: The Firm. Retrieved from:
Bertot, J. C., McClure, C. R., & Jaeger, P. T. (2008). The Impacts of Free Public Internet Access on Public Library Patrons and Communities. The Library Quarterly, 78 (3), 285–301.
doi:10.1086/588445
Bundy, A. (2003). Best investment: the modern public library as social capital. Presented at the AGM of Friends of Libraries Australia, Altona, Victoria. Retrieved from:
Canmac Economics Ltd. (2009). Halifax Central Library: An Economic Impact Assessment. Retrieved from
Eldred, H. (1998, February). Economic and Job Creation Benefits of Public Libraries. Library Administrator’s Digest,
33 (2). Retrieved from:
Elliott, D. S. (2007). Measuring Your Library’s Value: How to Do a Cost-Benefit Analysis for Your Public Library. American Library Association.
Fels Institute of Government (2011) The Economic Value of the Free Library in Philadelphia. University of Pennsylvania. Retrieved from:
Fraser, B. T., Nelson, T. W., & McClure, C. R. (2002). Describing the Economic Impacts and Benefits of Florida Public Libraries: Findings and Methodological Applications for Future Work. Library & Information Science Research, 24
(3), 211–33.
Glass, R. H., Clifford, N., Harris, B., & Institute, U. of K. P. R. (2000). The Role of Public Libraries in Local Economic Development. Policy Research Institute, University of Kansas.
Haas Center for Business Research and Economic Development (2010). Taxpayer Return on Investment in Florida Public Libraries. University of West Florida. Retrieved from:
Sawyer, R. (1996). The economic and job creation benefits of Ontario public libraries. Bottom Line: Managing Library Finances, The 9 (4), 14–26. doi:10.1108/08880459610131781
Schrader, A. M., & Brundin, M. R. (2012). National Statistical and Values Profile of Canadian Libraries: Report to CLA Executive Council. Canadian Library Association. Retrieved from:
Senville, W. (2009). Public Libraries: The Hub of Our Communities. Australasian Public Libraries and Information Services, 22 (3), 97–103. State Library of Victoria. (2011).
Dollars, Sense and Public Libraries: The landmark study of the socio-economic value of Victorian public libraries. Melbourne, Australia: State Library of Victoria. Retrieved from:
Texas State Library and Archives Commission. (2012). Texas Public Libraries: Economic Benefits and
Return on Investment. Austin, Texas: Texas State Library and Archives Commission. Retrieved from:
Urban Libraries Council (2007). Making Cities Stronger: Public Library Contributions to Local Economic Development. Washington, DC: Urban Institute. Retrieved from:
Warner, J., & Fitch, L. (1997). Dividends: The Value of Public Libraries in Canada. The Library Action Committee of the Book and Periodical Council. Retrieved from:
Wells, A. (2012, October 5). Climb This Mountain of Books. The Atlantic Cities. Retrieved from:

Here are more Ontario studies in the last few years:

Burlington Public Library creates over $57 million in total economic impact to the City of Burlington

See bibliography here:

New from OLA Press: Creating a Culture of Evaluation – Taking Your Library from Talk to Action

Newmarket Public Library creates over $20 million in total economic impact for the Town of Newmarket

Ottawa Public Library Delivers $5.17 in Benefits for every $1 Invested