About Us

SurdexCorpSurdex Corporation is among the largest digital orthophotography,  GIS mapping, and geospatial service providers in North America. Headquartered at Spirit of St. Louis Airport in Chesterfield, Missouri, in the greater St. Louis metropolitan area, we have been in business since 1954. Our ownership has a strong foundation in aerial data acquisition and geospatial data services. Our clientele include federal, state, and local government as well as private engineering, defense mapping/ Homeland Security, and utilities.

Our core services include:

Our employees average over 8.5 years of experience at Surdex. Of our 25 people in leadership positions, they average over 25 years in the mapping profession and over 15 years employment by Surdex.

Our staff includes:

  • Nine ASPRS Certified Photogrammetrists
  • Three registered professionals (survey and engineering)
  • Project Management Professional (PMP) certification

Almost all of Surdex’s staff works out of the headquarters in Chesterfield, Missouri. Our production center / administrative offices are housed in a 17,000 square foot building, and our 30,000 square foot hanger facility is just blocks away.

Surdex Corporation is recognized as a premier geospatial services provider, supplying accurate and precise digital information—on time and within budget—to its clients. Our success can be attributed to our unwavering commitment to the quality of our products, our exceptional staff, our investment in equipment and technical resources and the satisfaction of our clients.

Surdex: a family owned business serving your mapping needs for sixty years.


Left to right: Randy Hoffmann, Compilation Manager; E.R. Hoffmann, Jr., retired; Earl Hoffmann, Founder; Russ Hoffmann, Project Manager; Ronald C. Hoffmann, President.