Kopen Yerkasov was born on January 4, 1952 in village Tesykuya, East Kazakhstan region. After finishing school in village Gornyi, he worked as the manager of Mayterek rural club. He graduated from agricultural technical school in Ust-Kamenogorsk, in 1979, journalism faculty at Kazakh state university named after S.M. Kirov (now Kazakh national university named after Al-Farabi). His verses were published in areal, regional and in republican newspapers and magazines.
K. Yerkasov worked in editorial office of the markakolregional newspaper “Шамшырак” (“Shamshyrak”), at NTK-East TV channel in Ust-Kamenogorsk (1998-2001). Since 2001 - the chief specialist translator of Department on emergency situations of East Kazakhstan region.
K. Yerkasov is the author of poetic collections “Марқакөл маржандары” (“Markakol corals”), “Ағажай Алтай” (“Agazhai Altay”), “Жүректегі жазулар” (“Letters of heart”), “Ақиқат” (“Truth”). Some poems were a part of collective poetic collections. Works of the poet are filled with special love to the native land.
K. Yerkasov is the member of the Writers' Union of Kazakhstan. He has translated A. Pushkin, S. Yesenin, Ya. Smelyakov's verses, the play of the Moscow writer V. Gubarev “Stalin's Dacha” into Kazakh.