Not the biggest but in the top ten according to this article from last year.
Which states have the biggest drug problems?
By Ashley Welch
May 14, 2018 / 4:23 PM / CBS News
As the opioid epidemic continues to wreak havoc on communities across the country, new data looks at where drug abuse is most pronounced and which geographic areas in the United States are most at risk.
The report from personal finance website WalletHub ranks the 50 states and the District of Columbia across more than a dozen key metrics, ranging from the rate of opioid prescriptions to arrest and overdose rates and meth-lab incidents per capita.
According to the report, the 10 states with the biggest drug use problems include:
1. District of Columbia
3. New Hampshire
5. West Virginia
6. New Mexico
8. Rhode Island