A growing number of US states have mandated the use of masks and face coverings while in public.
With many states starting to lift coronavirus restrictions, more people are venturing out in public, but the number of cases is still rising in nearly half of them.
That's where masks come in. A recent study found that the use of masks and face coverings has been the most effective way to reduce person-to-person spread of coronavirus.
Here are the states that require the use of masks or face coverings in public settings:

- California (as of June 18)
- Connecticut (as of April 20)
- Delaware (as of April 28)
- District of Columbia (as of May 16)
- Hawaii (as of April 20)
- Illinois (as of May 1)
- Kansas (as of July 3)
- Kentucky (as of May 11)
- Maine (as of May 1)
- Maryland (as of April 18)
- Massachusetts (as of May 6)
- Michigan (as of June 18)
- Nevada (as of June 24)
- New Jersey (as of April 8)
- New Mexico (as of May 16)
- New York (as of April 17)
- Oregon (as of July 1)
- Pennsylvania (as of April 19)
- Rhode Island (as of May 8)
Read more about the individual state mandates here.