The Trust for Public Land

The Trust for Public Land (TPL) is 501(c)(3) nonprofit organization dedicated to creating and sustaining quality parks throughout the U.S. Working from more than 30 offices nationwide, TPL helps communities raise funds, conduct research and planning, acquire and protect land, and design and renovate parks, playgrounds, trails, and gardens.
Park Score® created by The Trust for Public Land (TPL), is a comprehensive rating system developed to measure how well the 75 largest U.S. cities are meeting the need for parks. It uses advanced GIS (Geographic Information System) to provide in-depth data to help guide local park improvement efforts. The mapping technology identifies which neighborhoods and demographics are underserved by parks and how many people are able to reach a park within a ten-minute walk. Cities can earn a maximum Park Score®of 100 based on three main criteria: acreage (determined by the median park size and the percent of parkland within a city), investment (both overall and per resident), and access (based on the percent of the population within a 10 minutes walk).
If TPL has not computed a Park Score for your city, you may use their methodology (http://parkscore.tpl.org/methodology.php) with local data to create your own as well as contact them for assistance.