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Population Matters is a membership organization working for a global population size providing a good standard of living for all and environmental sustainability.

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Our activities comprise education, research, lobbying and campaigning. We support:

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We are unconnected with but entirely endorse the US-based blog Population Matters.

Population Matters is the working name of the Optimum Population Trust. We are a registered charity and a company limited by guarantee registered in England and Wales. Registered charity no. 1114109. Registered company no. 3019081. Registered office: 135-137 Station Road, London E4 6AG. Telephone: +44(0)20 8123 9116. Email: enquiries@populationmatters.org.