Trenggalek is located in the South coast area of East Java, between 111 24' and 112 11' east longitude and between 7 53' and 8 34' South latitude. In the north it is bordered on the district of Tulungagung, the West on the district of Ponorogo, the South on Indonesian Ocean. Two the third of its area consist of mountainous land area and the rest is the basin area.
The total width of this region is 126.140 Ha in which 48 % is the forest area and the rest consists of farm land, dry land, housing area etc. There are 4 assistants to regent/ district, 13 subdistricts, 157 villages, 509 small villages and 4,107 small district society.
In 1993 the number of the population was 639.000 persons, by the population density of 506/km2 and its population number increase was 0.53 %.