Coordinates: 53°13′20″N 4°16′48″W / 53.2222°N 4.28°W / 53.2222; -4.28
Gaerwen is a village on the island of Anglesey, Wales. It is located in the south of the island 4 miles (6.4 km) west of Llanfairpwllgwyngyll and 4 miles (6.4 km) southeast of Llangefni . The A5 runs through the village, and the A55 runs just a few hundred metres north. According to the 2011 Census Gaerwen is now listed by the Office for National Statistics as Llanfihangel Ysgeifiog. The population of this community was 1,551.
An important Bronze Age hoard was found near Gaerwen in the nineteenth century. Comprising 2 gold lockrings and 2 penannular braclets, it is now in the collections of the British Museum.
Facilities in Gaerwen include four public houses, one car dealership, three churches, one Mormon meeting house.It is very much a village of the old and new with two disused windmills in the north of the village and a modern industrial estate making up the south west portion of the village. With along a Primary School in the Middle Portion of the village. There is a Traditional Fish and chips shop with a Barber next door. Along with a construction of a science park on the south of the A55 Junction.