By Jenny Connelly-Bowen, CBN Graduate Research Assistant

As we gear up for Give STL Day tomorrow, we’d like to share a few maps that review the landscape of nonprofit organizations in the St. Louis region. These were created using Community Commons, an online data and mapping tool produced and managed by the University of Missouri’s Center for Applied Research and Environmental Systems (CARES), the Institute for People, Place and Possibility, and Community Initiatives. Community Commons is free to use and easy to navigate.

Address-level map data on 501(c) organizations (from 2015) comes from the IRS Exempt Organization Business Master File Extract and has been matched to counties using the 2014 HUD USPS ZIP Code Crosswalk Files. The IRS defines a 501(c) organization as a tax-exempt nonprofit organization in the United States, and nonprofits that fall under the 501(c)(3) category are exempt from federal income tax if their activities have the following purposes:

  • Charitable
  • Religious
  • Educational
  • Scientific
  • Literary
  • Testing for public safety
  • Fostering amateur sports competition
  • Preventing cruelty to children or animals

The first map below displays the rate (per 100,000 people) of charitable organizations classified as 501(c)(3) by county in our area. St. Louis City and County appear to have high concentrations of nonprofit organizations, with rates of 645 and 542, respectively:



This second map plots out the locations of 501(c) nonprofit organizations in the St. Louis area. Organizations are classified by the first digit of their National Taxonomy of Exempt Entities (NTEE) Code, which categorizes an exempt organization according to its primary exempt activity. You can take a look at a full description of an organization’s NTEE code by clicking on its plotted map point and viewing its attributes. The map layer feature allows you to toggle layers on and off, so each of the following nonprofit categories can be viewed separately:

  • Religious Organizations
  • Youth Development
  • Public Safety/Disasters
  • Mental Health and Crisis Intervention
  • General Health/Rehabilitation
  • Animal-Related
  • Environmental
  • Educational Institutions
  • Arts, Culture, and Humanities



To access maps from previous editions of the Community Builders Exchange, click here.