List Of Mechanical engineers in United States Download the list of Mechanical engineers in United States. Smartscrapers provides an accurate directory and the latest data on the number of Mechanical engineers in United States There are 5201 Mechanical engineers in United States as of October 15, 2025; which is an 0.23% increase from 2023. Of these locations, 4285 Mechanical engineers which is 82.39% of all Mechanical engineers in United States are single-owner operations, while the remaining 916 which is 17.61% are part of larger brands. The top three states with the most Mechanical engineers are California with 762 Mechanical engineers, Texas with 459 Mechanical engineers, Florida with 372 Mechanical engineers. Average age of Mechanical engineers in United States is 5 years and 10 months.