Established in 2013, TheCumbrians.Net is now Carlisle United Football Club's most popular messageboard with over 850 registered users.

The London Branch of the Carlisle United Supporters' Club have co-ordinated the needs of exiled Blues since 1974, making them the oldest established Carlisle United Supporters’ Club. Their Branch was formed in and is run from London, and they have expanded over the years to cover exiled Blues all over the UK, France, Eire, Netherlands, Korea, Australia, Japan and even in Carlisle! - making up a total membership of over 300, including students and Junior Blues section.

Carlisle United Supporters Away Travel arrange coach travel with Titterington's to every Carlisle United first team away fixture, available to all supporters.

CUOSC is a non-profit community organisation, fully backed by Supporters Direct and the Football Supporters Federation. Funded by annual membership fees, and regular small donations, each member owns £1 share capital in the Trust, and has one vote.

Route 66 Blues Travel is the West Cumbrian branch who arrange coach travel to Carlisle United first team away fixtures in the North and down to the Midlands, available to all supporters.

The Carlisle United FC Scandinavian Branch was formed in 2004, following a group of friends having some beers in a pub. One member of the group recalled how he had visited Brunton Park around 1970 to watch Carlisle United, and the memories he held of Chris Balderstone. A few weeks later, the group traveled to Brunton Park for the final day of the 2003/04 season against Cheltenham Town, and despite relegation to the Conference, they returned on the opening day of the following season. The group make the trip several times a season, making new friends every visit.