How many states in the US are under quarintine/lock down/stay at home orders right now?

47 states total.

Those states are :

Alabama (Stay at Home)

Alaska (Stay at Home)

Arizona (Stay at Home)

California (Stay at Home)

Colorado (Stay at Home)

Connecticut (Stay at Home)

Delaware (Shelter in place)

District of Columbia *DC* (Stay at Home)

Florida (Stay at Home)

Georgia (Shelter in place)

Hawaii (Stay at home)

Idaho (Stay at home)

Illinois (Stay at home)

Indiana (Stay at home)

Kansas (Stay at home)

Kentucky (Healthy at home)

Louisiana (Stay at home)

Maine (Stay at home)

Maryland (Stay at home)

Massachusetts (Stay at home)

Michigan (Stay at home)

Minnesota (Stay at home)

Mississippi (Shelter in place)

Missouri (Stay at home)

Montana (Stay at home)

Nevada (Stay at home)

New Hampshire (Stay at home)

New Jersey (Stay at home)

New Mexico (Stay at home)

New York (Stay at home)

North Carolina (Stay at home)

Ohio (Stay at home)

Oklahoma (Shelter in place)

Oregon (Stay at home)

Pennsylvania (Stay at home)

Puerto Rico (Curfew)

Rhode Island (Stay at home)

SOuth Carolina (Stay at home)

Tennessee (Stay at home)

Texas (Stay at home)

Utah (Stay at home)

Vermont  (Stay at home)

Virginia  (Stay at home)

Washington (Stay at home)

West Virginia (Stay at home)

Wisconsin (Stay at home)

and Wyoming   (Stay at home)

Explanation: