How many mail in ballots did pennsylvania have in 2016

According to the Pennsylvania Department of State, in the 2016 general election, there were 1,144,155 mail-in ballots (also known as absentee ballots) cast in Pennsylvania.

Here is the breakdown:

It's worth noting that the number of mail-in ballots in Pennsylvania has increased significantly since 2016. In the 2020 general election, there were 2,477,441 mail-in ballots cast in Pennsylvania, which is an increase of 116.5% from 2016.