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Create a Website Account Manage notification subscriptions save form progress and more. Newton Development Corporation About NDC Newton Development Corporation NDC was established in 1961 and is a private nonprofit organization that has been assisting the Newton community and surrounding area for over 50 years. Newton Iowa is located on Interstate 80 and Interstate 35 in the Crossroads of the Midwest. Board of Directors The Newton Development Corporation Board of Directors is made up of a variety of members of the Newton business community economic development representatives and community representatives.