A record number of Oklahomans died from drug overdoses in 2016, and for the first time in years, methamphetamine was the single biggest killer, preliminary data shows.

An Oklahoma Bureau of Narcotics and Dangerous Drugs Control analysis shows 952 people died from overdoses, and the number is likely to rise as pending autopsies are finalized. The total number of overdose deaths is well above the 862 recorded in 2015 and the previous record of 870 in 2014.

Meth was involved in 328 of the deaths, climbing steeply from 271 in 2015 and surpassing the total combined deaths involving much-abused opio...