The core of the team that helped guide the club to its success throughout 2009 to 2012 departed, and Stevenage were relegated back into League Two at the end of the 2013–14 season.

[2] Chairman Keith Berners,[2] and "a number of like-minded volunteers" were tasked with arranging a team to play Hitchin Town Youth at Broadhall Way in November 1976, as a "curtain-raiser" for the new club.

[2] With the council as their landlords and a refurbished stadium, Stevenage Borough took on senior status, under the management of Derek Montgomery, and joined the United Counties Football League in the same year.

[6] In their first season as a senior club, the team won the United Counties League Division One championship, scoring over a hundred goals.

[10][11] Paul Fairclough was appointed as the club's manager in June 1990 and he would ultimately guide the team to four league titles in eight years.

[13] The league triumph included winning every match played at home, scoring 122 goals and amassing 107 points.

[2] Two seasons later, Stevenage won the Conference,[15] but were denied promotion to the Football League, due to insufficient ground facilities,[3] thus reprieving Torquay United, who had finished in last place of Division Three.

[16] During the same season, the club reached the First Round of the FA Cup for the first time, losing 2–1 to Hereford United of the Third Division at Edgar Street.

[17] The 1996–97 season saw the club progress to the Third Round of the FA Cup for the first time after a 2–1 victory against Leyton Orient at Brisbane Road.

[22][23] Stevenage lost 2–1 in the replay at St James' Park, a goal from Alan Shearer that "appeared to not cross the line" proved the difference.

[2] During the 2001–02 season, the club reached the FA Trophy final for the first time, losing 2–0 to Yeovil Town at Villa Park.

[33] The following year, the team finished sixth,[34] outside of the play-off places, and Westley's contract was not renewed, ending his three-and-a-half-year spell as manager.

[41] Stimson was offered a new contract by Stevenage in October 2007,[42] but resigned the following day and subsequently joined Football League club Gillingham.

[47] On Westley's return, Stevenage started the season slowly before going on a 27–game unbeaten run from December to March and reached the play-offs,[48] where they lost in the semi-finals to Cambridge United, 4–3 on aggregate.

Promotion was secured thanks to a 2–0 victory at Kidderminster Harriers, as Stevenage finished the season 11 points clear at the top of the table.

[60] During a congested period throughout February and March 2011, Stevenage won nine games out of eleven, propelling the club up the league table and into the play-off positions.

[64] During the same season, Stevenage equalled their previous best performance in the FA Cup, reaching the Fourth Round of the competition before losing 2–1 to Reading.

[67][68][69] In their first season in the third tier of English football, Stevenage were positioned in the League One play-off places following a fourteen-game unbeaten run that lasted for three months.

[70] In January 2012, Westley opted to leave Stevenage in order to take up the vacant managerial position at Preston North End.

[72][73] A run of four wins in their last five games meant that Stevenage finished in sixth, thus taking the final play-off place,[74] losing 1–0 on aggregate to Sheffield United in the semi-final.

[75][76] Stevenage also reached the Fifth Round of the FA Cup for the first time in their history during the season, losing 3–1 to Premier League club Tottenham Hotspur in a replay at White Hart Lane,[77] after the two teams drew 0–0 at Broadhall Way.

[86] First-team coach Darren Sarll took caretaker charge for the remainder of the season and was given the role on a permanent basis after helping the club secure League Two safety.

[89] With Stevenage in 16th place during the 2017–18 season, Sarll was sacked in March 2018; Wallace stating the club "had not seen the progress expected" since making a number of signings during the January transfer window.

[95] First-team coach Mark Sampson took caretaker charge,[95] but with the club in 23rd-place after several months under his management, Graham Westley returned for a fourth spell in December 2019.

[100] The EFL successfully appealed against the panel's sanctions on Macclesfield,[101][102][103] winning on 11 August;[104] the four suspended points were applied to the 2019–20 season, meaning Stevenage finished 23rd and so remained in League Two.

[105] After three victories in the first 16 matches of the 2021–22 season, Revell left his position as first-team manager and was replaced by Paul Tisdale in November 2021.

[112][113] This crest was adjusted slightly in 2010 to remove the word 'Borough', in-line with the club's name change prior to playing in the Football League.

[113] To mark the 40th anniversary of the club during the 2016–17 season, supporters were consulted about their favourite strip and the result was a re-creation of the diagonal stripes worn from 1996 to 1998.

[116] In June 2011, the club announced it had secured a 42-acre former sports ground in Bragbury End[128] – with the intention of developing the site into a new training complex.

[131] The record for the most number of appearances for Stevenage is held by Ronnie Henry, who played 502 matches in all competitions over two spells with the club.