Flag created by CincyFlags for the neighborhood. 
Its symbolism, according to CincyFlags in [1]:
"A band of color blocks present an abstract view of South Cumminsville framed by Beekman Street and the Mill Creek.
A single star in the flag’s canton ties South Cumminsville in with the other 51 neighborhoods in Cincinnati.
A single yellow stripe stands for South Cumminsville’s strong generational home ownership: half of residents own their own homes.
Gold as an illustrative reference to the Mill Creek Road bridge.
Black for the Mill Creek on the neighborhood’s borders.
Blue for the Beekman Street corridor.

Green as the Community Council’s color, standing for South Cumminsville’s community garden and environmental commitment."
Own work using: https://www.cincyflags.com/south-cumminsville-1
CincyFlags