The minimum wage will rise in 20 states and nearly two dozen cities in 2019, including $1-an-hour increases for employers in Massachusetts and Maine and for California businesses with more than 25 workers, the Associated Press reports.

The big picture: The federal minimum wage has been set at $7.25 an hour since 2009, but 29 states and the District of Columbia have enacted higher wages since then. The new increases will raise 20 states to even higher levels.

The states that are giving their workers raises next year:

Alaska

Arizona

Arkansas

California

Colorado

Delaware

Florida

Maine

Massachusetts

Michigan

Minnesota

Missouri

Montana

New Jersey

New York

Ohio

Rhode Island

South Dakota

Vermont

Washington state

Go deeper: Minimum wage hikes have earned workers $68 billion per year since 2012