Flag created by CincyFlags for the neighborhood. 
Its symbolism, according to CincyFlags in [1]:
"A bright, green square in the flag’s canton for the neighborhood’s tree-lined streets and green spaces.
An upward stripe capturing the energy and direction of Woodburn Avenue.

A strong horizontal banner representing the unique Tudor and Colonial Revival homes along Madison Road."
Own work using: https://www.cincyflags.com/east-walnut-hills
CincyFlags