East Aceh Regency is a regency in eastern Aceh province of Indonesia. It is located on the island of Sumatra. The regency covers an area of 6,040.6 square kilometres and had a population of 360,475 at the 2010 Census and 422,401 at the 2020 Census; the official estimate as at mid 2023 was 449,796- comprising 226,316 males and 223,430 females. The regency capital is the town of Idi Rayeuk.