Tillabéri is a town located in the extreme west of Niger. It is situated on the River Niger, approximately 113 kilometres or 70 miles northwest of the national capital, Niamey.
The town serves as an important administrative center and market hub, functioning as the capital of both the Tillabéri Region and the department of Tillabéri. According to the 2012 census, the population of the town was 47,678.