They currently play in group IV of the III liga, the fourth division of national football league system.

In the 1995–96 season, the first after promotion to the eastern group of II liga, KSZO finished 13th out of 18 teams, avoiding relegation by just three points.

However, at the end of the following season, the club was ranked second behind Petrochemia Płock and won promotion to the top tier of Polish football.

A completely new squad was formed based on players from junior teams and lower-level clubs but it proved to be inadequate for the top tier.

However, in 2007, the club was expelled from the second division (effectively relegated to the third level) and fined because its former chairman, Mirosław Stasiak, was accused of bribery.

Due to the reorganization of the Polish football leagues, the club was moved to the eastern group of the new II liga, which still was the third tier.

KSZO won its group without losing a single match at home and was promoted to the second tier, now called I liga, again.

In 2011, the new club, called KSZO 1929, was formed and joined the regional league, the sixth level of Polish association football the same year and won promotion.

The following season, KSZO 1929 won the fifth-level competition and was promoted to the III liga, group IV (the fourth division), where the club has been playing since.

Although KSZO supporters' nickname is Świętokrzyscy Rozbójnicy, i.e. the Holy Cross (a reference to the Świętokrzyskie Voivodeship) Reavers, they are known for outstanding atmosphere and high attendance during the matches.

Their biggest rivals are regional opponents Korona Kielce with whom they contest the Holy Cross Province derby.

Other rivals include Hutnik Nowa Huta and Stal Stalowa Wola with whom they contest the steelworks derbies[7][8] They also have a strong dislike of Radomiak Radom.

[9] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.