Whelan Security

Established in 1949 as a simple patrol firm along the St. Louis riverfront, Whelan Security has enjoyed a rich heritage of service excellence rivaled by few in the contract security industry. While other security firms have merged, consolidated, downsized, or sold, Whelan Security is still owned by the same family and guided by the same business principles more than a half of century after our inception. We rank as the biggest regional security firm in the Midwest and Central US and provide coast to coast (national) capabilities as an original founding member of TransNational Security.