In 1904 Shaddongate United became Carlisle United F.C., an association football club who played at the Millholme Bank ground to the west of Carlisle. The ground was often too small for their purposes and they sometimes used The Rugby Ground which would later be the adjacent neighbour of Brunton Park. In 1905 United joined the Lancashire Combination league and required larger facilities so moved to Devonshire Park, a football ground which stood where Trinity School now sits. In 1909 they were evicted from premises by The Duke of Devonshire and moved eastwards to establish Brunton Park, the clubs home ever since.
In 1953 the original wooden grandstand which sat where the Main Stand now sits was burned to the ground in a fire cause by an electrical fault. The sale of local player Geoff Twentyman to Liverpool for £12,500 enabled the club to rebuild the stadium into what is The West Stand today. Flooding
On the evening of Friday the 7 January 2005, the rivers Eden, Caldew and Petteril burst their banks in Carlisle due to as much as 180mm rainfall landing up stream that day. The worst affected area was Warwick Road, where Brunton Park is situated.
For the following six weeks Carlisle United were forced to play their home games at Christie Park in Morecambe while repair work took place. United were still able, however, to reach the playoffs in the Conference that season and win promotion back into The Football League.