The current flag of Prince George's County, Maryland, was adopted in 1963, replacing one that had been in use since 1696.

[3] The flag's origins date back to 1696, when Prince George's County was first created and under English rule.

[4] The flag was used by horsemen and colonial foot soldiers and consisted of a red St. George's Cross on a white field.

[5] The flag is a three-by-five white field with a red cross centered atop it, with the county seal in the canton.

[6] Both seals include a shield reflecting the Stuart royal arms used by Queen Anne (rather than those of the Danish Prince George) when she was Queen of England between 1703 and 1707; when Scotland and England united as the Kingdom of Great Britain in 1707, the arms Anne bore to reflect the union changed, but Prince George's County retained the older design.