Jaro was founded on December 18, 1965 by football enthusiasts working at Oy Jakobstads Rostfria Ab, which became the club’s first sponsor. Jaro rose through the Finnish football divisions, earning promotion to Finland’s top tier for the first time in 1988 by beating
MyPa in a playoff game for direct promotion (3–2 on penalties). The club was relegated after one season but returned in 1991 and remained in Veikkausliiga until 1998. Jaro finished 5th in 1995 and played in the
Intertoto Cup in
1996. Jaro also reached the
Finnish Cup final in
1999 but lost to
FC Jokerit. The 2000s saw ups and downs, including financial difficulties in 2008 that were resolved through restructuring. Jaro remained in the Veikkausliiga from 2002 until 2015, when they were relegated to
Ykkönen. In recent years, the club has continued to fight for promotion. In 2024, Jaro successfully returned to Veikkausliiga. In all, Jaro has played 23 seasons in the top-tier. ==Stadium==