With approximately 4,500 employees and nearly 2,000 subcontractors, the sheer magnitude of Y‑12 has a significant economic impact on the surrounding community. By contributing millions of dollars to East Tennessee through operating revenues, wages, taxes and pensions, Y‑12 helps generate thousands of area jobs.

In fiscal year 2015, Consolidated Nuclear Security, LLC purchased more than $144 million in goods and services from small businesses in the Oak Ridge area. Wages to Oak Ridge residents exceeded $45 million and taxes paid to the City of Oak Ridge was $400,000.

CNS is also committed to good corporate citizenship. In fiscal year 2015, Oak Ridge, Anderson County, and the surrounding area received more than $400,000 in corporate contributions. In 2016, the CNS Y‑12 Community Investment Fund also awarded grants totaling $180,000 to 30 nonprofits across East Tennessee. The fund is managed by the East Tennessee Foundation and directed by a committee comprising Y‑12 employees.

Y‑12 is also a major supporter of United Way, contributing hundreds of thousands of dollars to United Way of Anderson County and the United Way of Greater Knoxville. In 2016, employees and corporate contributions exceeded $625,000.