The club was formed in 1948 and admitted to the Carmarthenshire Association Football League. The present ground, Richmond Park, was created in 1952. Election to the Welsh League came in 1953 with the club gaining its first honours in 1959-60 with promotion from Division 2 West to the First Division of the Welsh League.
Progress was patchy in the 70’s and 80’s with intermittent promotion and relegation in the Welsh League Divisions until the 1995-96 season. This was the best season in the club’s history with both the Welsh League title and the Cyril Rogers Cup coming to Carmarthen – a notable double.
The following season 1996-97 was Carmarthen Town’s first in the National League and another milestone was achieved in the 1999-2000 season when the Club were runners-up in the Welsh Senior Cup under manager Tomi Morgan who had joined the club in mid-season.
2000-2001 season was Carmarthen’s fifth in the League of Wales. A third position finish saw the club gain qualification for the UEFA Intertoto Cup, an honour that had been denied them on goal difference the previous season.
The Intertoto Cup tie against Swedish giants AIK Stockholm was a significant landmark in the history of the club and ‘Town’s’ first European adventure ended in a creditable 3-0 defeat on aggregate. Following a 0-0 draw in the ‘home’ match all the goals were conceded in the away leg played at Sweden’s National Råsunda Stadium in Stockholm.
The 2001-2002 season was also ‘Town’s’ second venture in the FAW Premier Cup, and, as in the previous year, they reached the quarter-final stages of the competition losing out to Football League opposition. The club also reached the quarter final of the Welsh Cup and the semi-final of the League Cup but an indifferent run of results towards the end of the season saw a mid-table finish in tenth position.
The 2002-2003 campaign saw Town disappointingly finish in the bottom half of the table. The season was not without its positive side however as a number of Town’s younger players had the opportunity to gain valuable first team experience.
With the club resolved to regain its position of previous years significant changes to the squad were made for the 2003-2004 season. However, the anticipated change in fortunes did not materialise and with the departure of manager Tomi Morgan team management responsibility was taken over by Andrew York.
In December 2003 the club appointed Mark Idlewood as club coach. Despite continuing to struggling in the League Town enjoyed a successful Challenge Cup campaign finishing as runners up to Rhyl FC.
Having achieved significant developments off the field the club was determined to redress its playing profile. With the resignation of Andrew York, Mark Jones was appointed manager in May 2004. Consequently, there was a significant change in personnel and Town had a decidedly ‘new look’ for the 2004 – 05 season.
Gary Lloyd took over coaching duties following the departure of Mark Aizlewood to Chester and with Town finishing in sixth position and winning their first silverware in the form of the Loosemore’s League Cup Town were clearly back in contention.
Mark Aizlewood returned to the club during the close season to complement Mark Jones ‘ management structure and with several additions to the playing squad Town continue to strengthen to maintain the club’s momentum for this season’s campaign.
A UEFA Cup spot was Town’s reward as loosing finalists in the Welsh Cup and a very attractive draw against Eircom League outfit Longford Town in this season’s UEFA draw highlighted Town’s resurrection in fortunes. A 2-0 defeat in Longford was spectacularly overturned a fortnight later at Latham Park Newtown when Town demolished the Eircom League outfit 5-1 (5-3 on aggregate) achieving the highest score of any Welsh club in European competition.
The second Qualifying Round saw Town drawn against Danish giants FC Copenhagen. Town performed with great credit against the international laden Danish side who recorded a 2-0 score line in both ties.
The 2005-2006 season saw Town once again involved in a FAW Premier Cup campaign with an exciting win over Cardiff and a narrow extra time semi-final defeat in front of a near capacity crowd against Swansea City. Following a quarter final Welsh Cup exit late season momentum saw Town gain a fourth-place finish that provided a second consecutive season of European football.
Defeats in both ties against Finnish League leaders Tampere United ensuring there was no repeat of the previous year’s European euphoria. The 2006-2007 League campaign saw Town finish in a disappointing 7th. position but the Richmond Park outfit brought the season to a close on a high with a historic first Welsh Cup win that ensured a fourth European campaign.
The win ensured a third consecutive year of European football for the club and with the departure of Mark Jones Deryn Brace took over as Player / Manager. Town hosted their first European tie (UEFA Cup) at Richmond Park against Norwegian giants SK Brann, who lost out in the knockout stages to Everton FC. Town progressed to the semi-final of the FAW Premier Cup but in a tight end to the 2007-2008 season the Richmond Park outfit finish in 6th. position.
A bright start to the 2008-2009 season saw Town go seven games undefeated. Looking to improve on the previous season finish Town enjoyed several good runs that kept them in contention for a top three finish.
However, a series of defeats in March that included a 0-8 defeat to TNS saw the professionals capture a third at Town’s expense. Following Town’s contentious semi-final defeat to Aberystwyth Town in the Welsh Cup the Richmond Park outfit amassed their second highest total in the League for a pleasing fourth place finish.
With the Welsh Premier League due to be restructured at the end of the season it was vital that Town attain a top ten finish to the 2009 – 2010 campaign. But lacking consistency and with a dismal home record they languished below the magic ‘cut off’ point for most of the season. However, a 4-0 home win against Druids on the last day of the season saw Town attain the target to maintain Welsh Premier status. With manager Deryn Brace resigning his post in June Tomi Morgan was appointed manager for a second term of office at Richmond Park.
Despite being everybody’s favourites to be relegated the completely new look Old Gold squad battled bravely throughout the season and comfortably avoided relegation. With more time during the close season Morgan added to his young squad. Unfortunately, due to the poor results Morgan was removed from his managerial post at the start of December. Mark Aizlewood was appointed as the new manager in January 2012 accompanied by Neil Smothers as player coach. They have remained in situ since then. The main achievements during this period have been two Word Cup final victories.
By now Aizlewood and Smothers have been joined on the coaching staff by Danny Thomas. Season 2015/16 ended disappointingly when the Old Gold lost the play off semi-final to eventual Europa League qualifiers gap Connah’s Quay.