Portsmouth, United States: innovation profile

Portsmouth is number 495 in the 311 Innovation Cities Index, with an innovation score of 9. It is home to 1 R&D lab, 2 startups, 2 investors and 1 of the world's largest companies in the 311 Institute directories.

Part of the 311 Innovation Cities Index (311institute.com). Last updated 7 October 2026.

Largest companies

• Iron Mountain Inc (#F168)

Startups

• EventPipe
• Vatn Systems

Investors

• Sip Capital
• Sip Global Opportunity

R&D labs

RMC Research (United States).