Schwarzautal is a market town since 2015 with 2,299 residents (as of 1 January 2016) in the Leibnitz District of Styria, Austria.

[5] Until the end of 2012 the former municipalities Mitterlabill and Schwarzau im Schwarzautal lied in the Feldbach District and had the indicating plate letters "FB".

From mid-2013 until the end of 2014, the letters "SO" were assigned, since 2015 "LB" indicates the Leibnitz district.

[7] The municipal council further includes the Deputy Mayor Martin Kohl (ÖVP) and the municipality treasurer Rupert Wahrlich (Schwarzautal Active - List Rupert Wahrlich).

The authorization of the municipal coat of arms, for the fusion community, was carried out with effect from 15 July 2016.