[5] As of the 2020 United States census, there were 21,629 people, 8,391 households, and 5,362 families residing in the county.

According to the Greater Grenada Partnership, in 2020, the top 3 local employers were Modine, Lennox, and the Grenada School District[13] Top regional employers include Winchester, Toyota Mississippi, and Franklin Corporation.

The Bureau of Labor Statistics reports that Grenada has added 1,600 direct jobs between 2011 and 2019.

Senators Roger Wicker, R-Miss., and Cindy Hyde-Smith, R-Mississippi, announced the award of a $6.22 million grant to Grenada Railroad, LLC., to complete the final phase of a project to refurbish a rail line between Canton, Mississippi, and Memphis, Tennessee.

The entire 188 miles of the Memphis, TN to Canton, MS line will be rated at 286,000 gross weight on rails (GWR) with an authorized speed of 40 MPH making it a Class III Short Line Railroad.