Petrozavodsk (Roushie: Петрозаводск; Karelie/Veps/Finnish: Petroskoi) is the caipital ceety o the Republic o Karelie, Roushie. It stretches alang the wastren shore o the Lake Onega for some 27 kilometers (17 mi). Population: 261,987 (2010 Census); 266,160 (2002 Census); 269,485 (1989 Census).