Johnson had a private meeting with Ravens officials and coaches, working out for coach John Harbaugh and general manager Ozzie Newsome at their training complex, according to NFL sources.
The workout bolstered the Ravens' high opinion of Johnson, but the team never got close enough to select Johnson.
"This kid can do it all," ESPN analyst Louis Riddick said after the selection. "He has speed. He can cover. He will come up and support the run. He will absolutely stone you. He's going to get better and better."
Johnson was in Chicago on Thursday night, attending the draft along with his family; agent, Greg Barnett; and Ravens wide receiver Michael Campanaro, his best friend and former teammate at Wake Forest and River Hill.
"I'm so happy for Kevin and his family," Campanaro told The Sun after the selection. "He earned this. Texans just got a great player on and off the field."
Johnson visited the Dallas Cowboys and had private workouts for the Browns; who graded him as their top cornerback; Miami Dolphins; San Diego Chargers; Atlanta Falcons; New England Patriots; Arizona Cardinals; and Philadelphia Eagles.
Johnson also had a dinner meeting with Steelers general manager Kevin Colbert, player personnel coordinator Dan Rooney Jr. and secondary coach Carnell Lake.
The All-Atlantic Coast Conference selection ran the 40-yard dash in 4.52 seconds at the NFL scouting combine with a 41.5-inch vertical leap, a 10-10 broad jump, a 3.89-second short shuttle and a 6.79-second three-cone drill.
Johnson is a four-year starter who never missed a game because of an injury.
Johnson rushed for 1,220 yards and averaged roughly nine yards per carry as a senior with the Hawks and was named an all-star cornerback. Johnson was part of a 40-game winning streak at River Hill that included two Class 2A state championships.