The league was founded in 1904 as the
Montgomeryshire & District League, and the first ten seasons before the
First World War saw the league dominated by
Aberystwyth Town, who won the inaugural title and two other championships, and
Llanidloes who won five titles. After the war, the league was reformed for a single season with
Newtown picking up their only title (to date), before the league went into abeyance with the creation of the Welsh National League setup. The league returned in the 1930s as the
Montgomeryshire Junior League and ran until the outbreak of the
Second World War, when football was again suspended. The 1950s were notable for five successive titles for Rodney Rovers, a club from
Four Crosses, who played behind the Golden Lion public house. The 1967–68 saw the league expand to two divisions, a format that continued until the 2021–22 season. It has also been known as the
Montgomeryshire Amateur League. ==Member clubs for 2025–26 season==