Typically, there will be an empty line before and after a stanza
I'm Nobody! Who are you?
Are you- Nobody - too?
Then there's a pair of us!
Don't tell! They'd advertise- you know!
How dreary- to be- Sombody!
How public- like a Frog-
To tell one's name- the livelong June-
To an admiring bog!
-I'm Nobody! Who are you? Emily Dickinson
As you can see in this poem by Emily Dickinson, there are two stanzas.