The following links will lead you to various reference sites and organizations on the topics of overpopulation and mass immigration that may be of interest.  The content of these websites is subject to change at any time.  We do not necessarily endorse statements and positions of these  websites and organizations - you be the judge.

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National Organizations

Informational Websites and Organizations

Activist Websites and Organizations

Many of the sites listed on this page are action-oriented to some extent. The following sites are mainly activist-oriented.

State and Regional Organizations