Durham, NC

ZIP code 27709 is located in Durham, North Carolina, and is primarily known for being home to the Research Triangle Park (RTP), a sprawling research and technology campus. RTP houses over 300 companies, including IBM, GlaxoSmithKline, and Cisco Systems. Additionally, the zip code is also home to the Environmental Protection Agency (EPA) campus. This area is a hub for innovation and research in the Triangle region.