Paly of three vert, gules and azure. It the second part on or couped at the top point is or quadrate with sable formy cross. The shield enframed by or cartouche and crowned by or territorial crown with battlements from lime and leaves.
The authors are Yu.P.Terlets'kyi, M.Omel'chuk.
Computer graphic V.M.Napytkin.
Ю.Терлецький, А.Гречило. Сучасна символіка Костопільщини. - Рівне: УГТ, 2006. - 32 с. + 8 кол. с.