The club are recorded as playing a fixture against Newtown on Christmas Day 1875 on a field called Caegwyn.

[2] 'Records of Llanidloes' early days are quite patchy, but it is known that the club reached the semi-final of the Welsh Cup in 1881, losing to Newtown.

The Mid Wales League title was won on seven occasions and the club reached five Welsh Amateur Cup finals, winning the trophy in 1922.

In addition, Llanidloes won the Montgomeryshire Challenge Cup thirteen times, including eight successive wins between 1928 and 1935.

Llanidloes Town's most recent major success was winning the Central Wales FA Cup in 1984.

After a period of consolidation Llanidloes Town won the Spar Mid Wales League at the end of the 2012–13 season with 132 goals scored in the process.