Here is the excel sheet link to the PA DOS showing detailed voters by party by county for the entire state. The total number of voters is 9,011,495.
RE: The total number of voters is 9,011,495.
By Voters, do you mean REGISTERED voters, or those who actually voted?
BIDEN, JOSEPH ROBINETTE JR (DEM) 50.01% Votes: 3,458,229 Election Day : 1409341 Mail : 1995691 Provisional : 53168
TRUMP, DONALD J. (REP)48.84% Votes: 3,377,674 Election Day : 2731230 Mail : 595538 Provisional : 50874
Difference 80,555
Delaware County
BIDEN, JOSEPH ROBINETTE JR (DEM)62.95% Votes: 206,423 Election Day : 94246 Mail : 107643 Provisional : 4534
TRUMP, DONALD J. (REP)36.15% Votes: 118,532 Election Day : 96019 Mail : 20295 Provisional : 2218
206,426+118,532 + 3rd party 2,976 = 327,934 total votes
Delaware county registered voters
208,303 Dems + 160,750 Rep’s + 35,799 Ind’s + 20,907 Other = 425,759 Total
So Biden got 206,423 votes of 208,303 Dem’s = 99.098%
Trump got 118,532 votes of 160,750 Repub’s = 73.737%
This does not consider 35,799 Ind’s or 20,907 Other
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Delaware County 2016 Results Trump vs Hillary
H. Clinton 59.4% 169,169 votes
D. Trump 37.4% 106,559
Other 3.2% 9,104