What subject in Russia is Mariinsk located? Is it a city, a town or locality?

Answer 1

From Wikipedia:

"Mariinsk (Russian: Марии́нск) is a town in Kemerovo Oblast, Russia, located on the Kiya River (Ob's basin) some 180 km northeast of Kemerovo. Population: 42,977 (2002 Census); 39,700 (1972).

The town of Mariinsk was founded in the 18th century as a village Kiyskoye. In 1856, it was granted town status and renamed to Mariinsk one year later. Mariinsk stands at the intersection of the Kiya River and Trans-Siberian Railway."
http://en.wikipedia.org/wiki/Mariinsk

There seem to be three others; have a look here:
http://www.traveljournals.net/explore/russia/map/m4138362/mariinsk.html

Answer 2

I think you mean MINSK, a city....but Google both anyway.