The history of Kotlas begins long before it received official city status. The area at the confluence of two great northern rivers — the Vychegda and the Northern Dvina — was inhabited in ancient times. The first mentions of the settlement Pyras at this location date back to the 14th century, and the name "Kotlas" itself, according to one version, has Finno-Ugric roots and may mean "hollow" or "lowland".
The transformation of a small settlement into an important strategic centre occurred due to a fortunate combination of geographical and economic circumstances:
- Geography: Its location at the junction of waterways made this place a natural centre for navigation and the exchange of goods.
- Railway: A decisive moment in the city's destiny was the construction of the Perm-Kotlas railway at the end of the 19th century. It connected Siberia and the Urals with the Northern Dvina, opening a route for transporting grain, furs, and timber to Europe via Arkhangelsk.
By the beginning of the 20th century, Kotlas had formed as a bustling transit point. Merchants, railway workers, and river workers flocked here, creating a special, dynamic rhythm of life. Official city status was granted to Kotlas by the Provisional Government in 1917, which finally consolidated its role as a key transport hub connecting different regions of the country.