[1][2] The Mississippi State Senate was composed of the following.

[1] Joseph Johnson was elected President pro tempore of the Senate.

[1] James Patton took office as Lieutenant Governor of Mississippi on January 5, 1820, and became the ex officio President of the Mississippi State Senate.

[2] Edward Turner was elected Speaker of the House.

[2] Non-representatives Peter A. Vandorn and William Mason were elected to the offices of clerk and doorkeeper, respectively.