A rectangular panel with a ratio of width to length as 2:3, in the middle of a blue third from staff is yellow quadrate with black formy cross, the free part is divided by or strips in the form of the letter "К" on three triangles - top crimson, middle green and bottom black.
The authors are Ya.Omel'chuk, M.Bilyk.
Computer graphic V.M.Napytkin.
Ю.Терлецький, А.Гречило. Сучасна символіка Костопільщини. - Рівне: УГТ, 2006. - 32 с. + 8 кол. с.