The land areas feature low-mountain hills, where many parts of the mountain have been cultivated as rice or other crop fields. The Rias type coast has severely curved places where reclaimed lands are well developed. Along the coast of the sea, there are a total of 11 inhabited, and 107 uninhabited islands. Its population is 64,075 with 24,930 households as of December, 2004. It is divided into 2 towns and 6 subcounties.

Strongly influenced by a Yellow Sea, Taean especially has a huge temperature gap of the summer and the winter. The average annual temperature is around 11.5°C, while the average temperature during the month of January is around -2.0°C and that during the month of August is around 25.0°C. The Taean region has 1,334.2 mm of rainfall on average each year with half of this falling in between the months of July to September.

It has a coast national park, which is unique in Korea. The coastal length is 530.8km, where every corner of the coasts boast of exclusively unique scenery with more than 120 small and big islands scattered all over the area.

On the bordered of three seas in the Yellow Sea, Taean makes for a lovely waterfront attraction. The heavily indented coastline stretching along its borders harbors also the National Waterfront Museum and Cheonsuman Bay. Manlipo Beach is one of 300 beaches and small islands surrounding Taean.