1804 United States presidential election in Pennsylvania

The 1804 United States presidential election in Pennsylvania took place as part of the 1804 United States presidential election. Voters chose 20 representatives, or electors to the Electoral College, who voted for President and Vice President.

Pennsylvania voted for the Democratic-Republican candidate, Thomas Jefferson, over the Federalist candidate, Charles Cotesworth Pinckney. Jefferson won Pennsylvania by a wide margin of 89.38%.