Member connectivity has been growing rapidly inside the USDN network. In 2009, just 10 percent of members reported being connected to others; today, that number is 90 percent. The strength of these member ties makes USDN a powerful vehicle for collaborative innovation.

USDN generates an annual network map that shows the ties among members, including information exchange and collaborative projects.

Annual network growth 2009 to 2017


Hundreds of USDN members work together in Peer Learning Groups, Collective Action Groups, and other projects tackling dozens of topics. Examples include:

  • Expanding support and funding streams for bike sharing
  • Integrating climate resilience planning into city departments
  • Exploring the benefits of neighborhood scale approaches
  • Building urban food systems
  • Improving communication about sustainability
  • Implementing best practices for tracking and reporting of metrics and outcomes

Learn more about joining USDN »