Around 600 years BC, the area of what is today Löcknitz was settled by the Ukrani Slavs in the void left by the retreating Germanic tribes.

The name, which is of Slavic origin, likely evolved out of either the word "Locheniza" or "Lokenitz", roughly translating to "ditch depression" or "swamp hole".

[2] Since 1992 the bilingual German-Polish Gymnasium is visited by pupils from Germany (526 in 2008) and Poland (161), leading to the German Abitur as well as to the Polish matura.

In 2008 the certificates were handed over by the foreign ministers of both countries Frank-Walter Steinmeier and Radosław Sikorski.

The mass immigration of Poles into Löcknitz has also caused some problems and gave rise to an anti-Polish sentiment as well as German nationalism in the town.

[8] The far-right National Democratic Party of Germany has enjoyed some popularity in the town, holding two seats in the municipal council between 2009 and 2019.

[8] In 2020, the police closed down a facility in Löcknitz where neo-Nazis had combined several garages into a single large hall which was used as a meeting place as well as for the organisation of far-right concerts, which up to 200 people attended.

[15] Dirk Bahlmann (NPD), who used to be a member of the municipal council, is recognized as the leader of neo-Nazi activities in the town.

[15] Several worn-out posters of the NPD's youth wing JN are glued to an advertising column in front of the train station.