Also qualifying for the Super Bowl chase were the Ravens, who got the final AFC wild card. And the Seahawks secured home-field advantage in the NFC playoffs, not a pleasant prospect to the rest of the conference.
Like Seattle, Green Bay finished 12-4 after defeating Detroit 30-20 Sunday. But the Seahawks, who beat St. Louis 20-6, held the tiebreaker because they beat the Packers in the season opener.
''Our main goal coming into the season was winning the division, but getting the No. 1 seed is just as big,'' Seattle linebacker K.J. Wright said.
Carolina (7-8-1) became the second division winner in NFL history with a losing record, but has won four in a row after a 34-3 romp at Atlanta to secure the NFC South.
''It feels great,'' Carolina running back Jonathan Stewart said. ''I mean, it's a blessing and you just have to cherish these moments right now. ... We just believed and played our hearts out and this is where we are.''
Dallas (12-4) already owned the NFC East crown and won at Washington 44-17.
Pittsburgh (11-5) took down Cincinnati 27-17 to wrap up the AFC North. The Bengals (10-5-1) got a wild card.
Denver's 47-14 win over Oakland gave the Broncos (12-4) a first-round bye as AFC West champion. New England, also 12-4 by with a victory over Denver, has the top seed, even though it fell at home to Buffalo 17-9.
Indianapolis already had the AFC South title; it beat Tennessee 27-10.
The playoff schedule:
Saturday, Jan. 3: Arizona at Carolina, followed by Baltimore at Pittsburgh.
Sunday, Jan. 4: Cincinnati at Indianapolis, followed by Detroit at Dallas.
Saturday, Jan. 10: New England will host an afternoon game, followed by Seattle hosting the prime-time match.
Sunday, Jan. 11: Green Bay hosting, followed by Denver at home.
Packers 30, Lions 20
Bothered by a left calf injury, Rodgers was carted to the locker room after tossing his first score to Cobb late in the second quarter. He hobbled back on to the field in the third quarter with the game tied at 14 and led Green Bay on a drive that ended with a 13-yard score to Cobb.
Detroit has not won in Wisconsin since 1991.
Steelers 27, Bengals 17
At Pittsburgh, Antonio Brown returned a punt 71 yards for a touchdown and added a clinching 63-yard scoring grab with 2:50 to go. Brown had 212 all-purpose yards.
The victory came at a potentially high cost. Running back Le'Veon Bell left in the third quarter with a hyperextended right knee following a collision with Cincinnati safety Reggie Nelson. Nelson hit Bell low at the end of a 19-yard reception. Steelers coach Mike Tomlin and Nelson had a lively conversation after the game, with Tomlin pointing his finger at the Bengals player several times.
Panthers 34, Falcons 3
In 2010, Seattle was 7-9 and won the NFC West, then beat New Orleans in the wild-card round.
The Falcons (6-10) were booed as they finished their second straight losing season under embattled coach Mike Smith.
Seahawks 20, Rams 6
At Seattle, Marshawn Lynch scored on a 9-yard run, Bruce Irvin returned an interception 49 yards for a touchdown and the Seahawks capped a six-game win streak. Seattle held five of its final six opponents to less than 10 points.
St. Louis (6-10) couldn't take advantage of two first-half turnovers by the Seahawks and its only points came on a pair of field goals from Greg Zuerlein.
Ravens 20, Browns 10
To reach the playoffs for the sixth time in seven years, Baltimore (10-6) needed to beat the Browns (7-9) and have San Diego lose in Kansas City. Precisely what happened.
The Browns had lost four straight, were starting rookie quarterback Connor Shaw and had dropped 12 of their past 13 against Baltimore.
At Kansas City, Justin Houston had four sacks for the Chiefs (9-7) to break Derrick Thomas' franchise record with 22 in the season. Cairo Santos kicked four field goals, and Chase Daniel played serviceably in place of injured quarterback Alex Smith.
The Chiefs' only touchdown came when wide receiver Dwayne Bowe fumbled inches shy of the goal line early in the second quarter. Tight end Travis Kelce recovered in the end zone, not only giving Kansas City a 10-0 lead but keeping a dubious streak intact: No Chiefs wide receiver caught a TD pass all season, the first time in at least 50 years that has happened.
Philip Rivers had 291 yards passing for the Chargers (9-7), who would have made the postseason by winning.
DeMarco Murray and Dez Bryant broke franchise records. Murray rushed for 100 yards on 20 carries, passing Emmitt Smith for the team single-season mark. Murray's 1,845 yards bettered Smith's 1,773 from 1995.
Bryant caught scoring passes of 65 and 23 yards to give him 16 touchdown receptions on the season, breaking Terrell Owens' team record of 15 set in 2007.
Host Washington finished 4-12.
Broncos 47, Raiders 14
At Denver, C.J. Anderson ran for three touchdowns. Peyton Manning helped the Broncos (12-4) to at least a tie for the best record in the NFL for the third consecutive season since his arrival in Denver.
Manning, who completed 21 of 37 passes for 273 yards, failed to throw a TD pass for the second time in four weeks after throwing one for 51 consecutive games.
Oakland finished 3-13.
Jim Harbaugh got a victory in his final game as 49ers coach. Harbaugh said after the home win against playoff-bound Arizona (11-5) on Sunday that he and the 49ers (8-8) are mutually parting ways.
Anquan Boldin caught a 76-yard TD pass and went over 1,000 yards receiving. Frank Gore ran for 144 yards on 25 carries to go over 1,000 yards rushing for the eighth time in 10 NFL seasons with San Francisco.
Johnson gave Houston (9-7) a 21-17 lead with an 8-yard reception early in the fourth quarter. Watt made it 23-17 when he sacked Blake Bortles in the end zone for a safety. The sack gave him 20 1/2 this season, making him the first player in NFL history to have two seasons with 20 or more sacks.
The Jaguars finished 3-13.
Kyle Orton threw for one touchdown, Anthony Dixon ran for another and the Bills (9-7) finished their first winning season in 10 years.
The victory snapped several streaks: Buffalo's 0-12 record at Gillette Stadium and New England's 35 straight home wins against AFC teams.
At Nashville, the Colts (11-5) bounced back from their worst performance this season by nearly matching at halftime what they did offensively in a loss at Dallas. They wound up outgaining the Titans 378-192 as the AFC South champs swept their division a second straight season for the first time in franchise history.
With their 10th straight loss and Tampa Bay's loss to New Orleans, the Titans (2-14) finished their worst season since 1994 and will pick second overall in the draft.
Geno Smith had his best game, throwing for a career-high 358 yards and three touchdowns in what might be Rex Ryan's final game as Jets coach.
Smith's performance more than negated a 97-yard run by Lamar Miller, the longest play from scrimmage in Dolphins history.
The Jets (4-12) finished with their worst record since 2007. The Dolphins (8-8) missed a shot at their first winning season since 2008, but coach Joe Philbin will be back for a fourth season in 2015.
Mark Sanchez threw two touchdowns and the Eagles' special teams scored their seventh TD. Backup tight end Trey Burton returned a blocked punt 27 yards for a score in the third quarter as the Eagles (10-6) snapped a three-game losing streak that knocked them out of playoff contention.
Giants rookie Odell Beckham Jr. had 12 catches for a career-best 185 yards, including a 63-yard fourth-quarter touchdown. The loss snapped a three-game winning streak for the host Giants (6-10), who have missed the playoffs for the third straight season.
At Minneapolis, Teddy Bridgewater threw the go-ahead 44-yard touchdown pass to Adam Thielen in the third quarter. Blair Walsh kicked two field goals, Audie Cole had 11 tackles in his first start of the season, and the Vikings (7-9) ended coach Mike Zimmer's first year on a winning note.
Jay Cutler returned from a one-game benching, but the Bears (5-11) finished with their worst record in 10 years.
AP NFL website: www.pro32.ap.org and www.twitter.com/AP-NFL