The head of the NAACP is stepping down at the end of the year, the organization announced Sunday.

NAACP President Benjamin Todd Jealous submitted his letter of resignation this week, and will remain in his position through Dec. 31. 

Jealous, 40, has been at the helm of the civil rights organization since 2008, when he was named the youngest person ever to run the group.

Jealous said in an interview with USA Today that he was stepping down to spend more time with his wife and children.

"Leadership knows when to step up and when to step down," he said. "This day I can say with pride that I'm prepared to step down and make room for the next person who will lead this organization to its next chapter."

Jealous told the paper that he feels he's leaving the NAACP in a better place than when he first took over. At the time, he said, the organization had shaky finances and was criticized for an out-of-touch, aging leadership.

During his tenure, the organization said its membership has grown from 175,000 to 675,000, and the number of donors has jumped from 16,000 annually to more than 132,000.

The group did not name a successor to Jealous on Sunday.