Californians for Population Stabilization (CAPS) www.capsweb.org works to formulate and advance policies and programs designed to stabilize the population of California at a level which will preserve a good quality of life for all Californians.

Floridians for a Sustainable Population (FSP) www.flsuspop.org is a nonprofit, statewide organization of concerned environmentalists who believe that unrestrained population growth is the chief factor in the development of sprawl that is eating up our wetlands, our forests and our needed agricultural acreage. To keep our rivers, our shorelines and our reefs healthy and productive, we must address the impact of rapid population growth on our quality of life and the potential for a sustainable Florida for our grandchildren.

Minnesotans For Sustainability (MFS) www.mnforsustain.org provides information to assist in thoughtful reflection and in preparing decisions encouraging a sustainable Minnesota and United States. Not specific to Minnesota, almost all of the information presented is national and international in scope.

Vermonters for a Sustainable Population (VSP) www.vspop.org strives to inform Vermonters about the negative impacts that continuing population growth will have on the environment, economy, and quality of life of future generations, and to motivate Vermonters to take actions that will result in a sustainable population.