Sareyn

Sareyn is a city in the Central District of Sareyn County, Ardabil province, Iran, serving as capital of both the county and the district.

At the 2006 census, its population was 4,478 in 1,135 households, when it was in the former Sareyn District of Ardabil County. The following census in 2011 counted 4,440 people in 1,241 households, by which time the district had been separated from the county in the establishment of Sareyn County. The 2016 census showed a population of 5,459 people in 1,582 households.

Sareyn is known for its hot springs. The population increases to more than 20,000 in the summer because of the many tourists who go there due to the charming climate. It stands 25 km from Ardabil and total area is 1.28 square km2.

Sareyn Springs:
 * Qara Su (A'saab) Thermal Spring
 * Sari Su Thermal Spring
 * Gavmish Goli Thermal Spring
 * General Thermal Spring
 * Besh Bajilar Thermal Spring
 * Qahveh Suei Thermal Spring
 * Pehenlu Thermal Spring