Irkutskian

1. not comparableOf or relating to the city of Irkutsk, Russia.

   By far the most exciting occasion in the Irkutskian social calendar for 1891 was the visit of the Tsarevich (later Nicholas II) who only stayed a day but still had time to visit the museum, the gold-smelting laboratory and the monastery, […]

   1994 April, Bryn Thomas, Trans-Siberian Handbook, 3rd edition, Hindhead: Trailblazer Publications, →ISBN, page 162

plural Irkutskians

1. A native or inhabitant of Irkutsk, Russia.

   Today's Irkutskians are rather better behaved, although mafia-related crime is on the increase. A city of over half a million, Irkutsk is still one of the largest suppliers of furs to the world markets, although engineering is now the main industry.

   1994 April, Bryn Thomas, Trans-Siberian Handbook, 3rd edition, Hindhead: Trailblazer Publications, →ISBN, pages 162–163