The board's official meeting schedule is published in accordance with § 2.2-3707 of the Virginia Freedom of Information Act[5] (FOIA) on the master calendar[6] on the county's website.

In November 2015, Loudoun voters made history when they elected their first two Black supervisors: Phyllis Randall (chair-at-large) and Koran Saines (Sterling).

[16] Over the course of the four-year term, three supervisors served as the vice chair: Janet Clarke (Blue Ridge), Shawn Williams (Broad Run), and Ralph Buona (Ashburn).

Williams resigned the vice chair post on March 16, 2015, after a 2006 arrest for assault in Ocean City, Maryland resurfaced.

In November 2007, voters removed four incumbent, fiscally conservative Republicans from the board of supervisors in a backlash over rapid development in the county's eastern portion.

Sugarland Run District Supervisor, Susan Klimek Buckley, served as vice chair all four years of the term.

[27] The 2003 board, and other officials in Loudoun, were the subject of a federal investigation of possible corruption relating to a land deal involving the Royal Saudi Academy.

The sole Democrat on the board, Mercer District Supervisor Thomas Dodson, resigned his position effective December 31, 1993, after taking a job out of the area.

[43] In October 1989, the board appointed Howard Smith to temporarily fill the vacant Sterling District seat until a special election could be held in November 1990.

[44] Smith lost the November 6, 1990 special election to Roger Zurn, flipping the Sterling District seat from Democrat to Republican.

[50] Later that month, the Board appointed Charles Bos to fill the Leesburg District seat and serve out the remainder of the term.

The board appointed Betty Tatum in July 1981 to fill the Guilford District seat until a special election could be held that November.

[54] Tatum ran and won the November 3, 1981 special election, defeating former Guilford District Supervisor Bob Scheetz.

Carl Hendrickson and George Yeager were also sworn in on the same day to take their seats as supervisors for the redrawn Broad Run and Sterling Districts.

[61] Before the November 1976 special election was held to permanently fill the Guilford seat, Scheetz was challenged by Gerry Gardner in a Democratic primary that same year.

[54][55] In June 1978, Sterling District Supervisor George Yeager, the board chair since January 1978, resigned his seat to accept a job in West Virginia, effective July 11, 1978.

[65] During this term, Mercer District Supervisor William Crossman, a Democrat,[66] held the chair position from January 1976 to December 1977.

James Cave was appointed by a judge to fill the vacant Sterling District seat, attending his first meeting on November 5, 1974.

At the March 7, 1955, board meeting, Hayward Thompson was elected to serve as chair for the remainder of the term, and James Arnold was appointed to fill the Lovettsville District seat.