The terrain is predominantly high and mountainous; the highest point is Myongidoksan, 1,585 meters above sea level.

The county's borders run along the Masingryong and Ryongam ranges.

Ich'ŏn county is divided into 1 ŭp (town) and 22 ri (villages): Agriculture is limited to the low-lying regions.

Due to the abundant woods, lumbering is also an important industry.

There are deposits of gold, asbestos, nickel and lead in the county.