Tsivilsk (Russian: Циви́льск; Chuvash: Çӗрпӳ, Śĕrpü) is a town and the administrative center of Tsivilsky District of the Chuvash Republic of Russia, located 37 kilometers (23 mi) from the republic's capital city of Cheboksary, at the crossroad of the highways from Nizhny Novgorod to Kazan and from Tsivilsk to Ulyanovsk. Population: 13,478 (2010 Census preliminary results); 12,967 (2002 Census); 10,053 (1989 Census).