Paris SG has played 47 seasons, all of which have been spent within the first three levels of the French football league system (Ligue 1, Ligue 2 and Division 3). The capital side has spent 44 seasons in Ligue 1, winning the competition 6 times. PSG have never been relegated from Ligue 1. The club's worst Ligue 1 finish to date is 16th, their placing at the end of the 1971–72 and 2007–08 seasons.
During that record-breaking season, Paris SG became the earliest Ligue 1 champion ever, only needing 30 matches (out of 38) to clinch the title. The club finished with 96 points, 31 ahead of second-placed Olympique Lyonnais (both national records). In the process, PSG won 30 matches (out of 38), recorded a goal difference of +83, and conceded only 19 goals (all national records). The Parisians also scored 143 goals in all competitions, and recorded an average home attendance of 46,102 spectators per game (both club records). Moreover, Zlatan Ibrahimović scored 50 goals in 51 matches (national record), including 38 goals in Ligue 1 (club record).
Towards the end of the 1960s, an ambitious group of businessmen decided to create a major club in the French capital. After a petition was signed by 20,000 people, Paris Saint-Germain Football Club were founded on 12 August 1970 with the merger of Paris FC and Stade Saint-Germain (the latter team having existed since 1904). PSG are today the city's largest club by far, as well as France's most successful club in terms of trophies won.
The Saint-Germain-en-Laye-based first team allowed the brand new Paris Saint-Germain to start their career in Ligue 2 for the 1970–71 campaign. PSG made an immediate impact both on and off the pitch. The club built a substantial fanbase, won the Ligue 2 title and celebrated their first birthday in Ligue 1. The 1971–72 term ended with an honourable 16th-placed finish. PSG have never formally been relegated from Ligue 1. However, the club split into two in 1972. The professional arm of the club joined CA Montreuil and continued life in the top-flight under the name of Paris FC, while PSG assumed amateur status and had to restart in Division 3.
PSG finished second in their group and when first-placed Quevilly balked at promotion, the capital club moved up to Ligue 2 in 1973. During 1973–74, the Parisians were already shining in the French Cup by reaching the quarter-finals. Even better was the second-placed league finish which saw PSG take on Valenciennes in a play-off tie for promotion to the premier division. Beaten 2–1 away, PSG won 4–2 at the Parc des Princes on 4 June 1974 and were promoted to Ligue 1, ironically, the same year that Paris FC were relegated. Since then, PSG have always played in the French first division.
PSG have always represented both Paris and nearby Saint-Germain-en-Laye. Paris SG play their games in Paris at the Parc des Princes. However, the Camp des Loges (the club's training complex since 1970) is located in Saint-Germain-en-Laye. PSG spent their formative years using the Stade Municipal Georges Lefèvre, located in front of the Camp des Loges, before moving into the Parc des Princes in 1974.