Niersbach has one outlying centre, the Ortsteil of Greverath.

In 1814 it was assigned to the Kingdom of Prussia at the Congress of Vienna.

The council is made up of 12 council members, who were elected by proportional representation at the municipal election held on 7 June 2009, and the honorary mayor as chairman.

The municipal election held on 7 June 2009 yielded the following results:[3] The German blazon reads: In Silber über grünem Wellenschildfuß eine blaue Töpferscheibe, beseitet von je einer roten Flamme, darüber ein blauer Topf.

The municipality's arms might in English heraldic language be described thus: Over a base wavy vert argent a potter's wheel on which a pot, both azure, between two flames gules.