Micheil Bezuijen, acting mayor of the nearby city of Harlemmermeer, said 25 of those injured were in serious condition.
Turkey's NTV reported earlier that at least 10 people were killed when the Boeing-737 with 134 people on board crashed while trying to land.
In Ankara, Turkish Transport Minister Suat Hayri Aka said it was not yet clear what had caused the crash. "Turkish Airlines experts have flown for Amsterdam to investigate," he said.
Turkish Airlines CEO Temel Kotil told reporters the majority of those killed were probably crew members.
The plane split into three pieces when it hit the ground some 100-150 meters (330-500 feet) from a busy highway. No explosion or fire followed.
TV footage broadcast by the Dutch NOS channel showed covered bodies near the plane.
A pilot on the ground who witnessed the incident said the Turkish airliner did not crash, but made "an emergency landing." He told journalists that the pilot directed the airplane into a plowed field after he lost engine speed.
Another witness said that the Boeing was coming in for a landing but was too low. It tried to regain altitude to avoid a nearby highway, but the airplane did not have enough speed and crashed in a field some distance short of the runway.
The crash could have been caused by turbulence, a survivor told CNN-Turk.
"We encountered turbulence, very strong turbulence," he said. "I thought we were going to land in a field or on a highway."
