She said it recognised the progress Wanganui had made in economic and social terms through adopting a pro-active approach to acquiring and using new technologies.
"The flow-on effects from the use of this new technology will see changes we could never have imagined. Just as the telephone changed the ways we work, find information, do business and communicate with each other, access to ultrafast broadband will create opportunities that will change the ways we live our lives," she said.
News of Wanganui joining 20 other communities was made in Riverside, California, which was named the 2012 Intelligent Community of the Year.
"Being included as one of the Smart21 puts Wanganui on a footing with other communities across the world in terms of our digital leadership," Ms Main said.
The forum said a place among the year's Smart21 was considered a "badge of honour".
Wanganui will be judged against towns and cities from the USA (3), Australia (3), Canada (4), Taiwan (3), Portugal, Brazil, Greece, Finland, Estonia, China and Albania. In January the forum will name seven finalists at the annual conference of the Pacific Telecommunications Council in Hawaii, with the announcement of the winner of the 2013 Intelligent Community in June.