Conservation by the Numbers - Data Sources

State Population (2010)

U.S. Census Bureau, 2010

Projected Population Change 2000-2030

U.S. Census Bureau, Population Division, Interim State Population Projections, 2005

State Land Area

Trust for Public Land’s Conservation Almanac, June 2008

Acres in Public Ownership

Trust for Public Land’s Conservation Almanac, June 2008

Acres Owned or Under Easement by Private Land Trusts

Land Trust Alliance, 2010 Census (data through Dec. 31, 2010)

Total Percent of State Developed

NRCS NRI 2003 summary report

Species Diversity, Rank by State

NatureServe analysis, July 2008, update modeled on the 2002 States of the Union Report

Native Species at Risk of Extinction

NatureServe analysis, July 2008, update modeled on the 2002 States of the Union Report

Public Dollars Spent on Conservation (1998-2005)

Trust for Public Land’s Conservation Almanac, June 2008

Go to the Map

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Go Straight to Your State

Learn about conservation and open space in your state.

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