What kind of snake
This is a juvenile Eastern Hognose Snake (Heterodon platirhinos), a harmless species that eats mostly frogs & toads and is famous for its elaborate defensive display. They are rather uncommon.
Hi! A great resource for our area is Amphibians and Reptiles of Delmarva by James White, Jr. and Amy White if you are interested.
Maryland Extension has several fact sheets and resources at the bottom of this link.