Village Rayo of Naharlagun , Papum Pare comes under state Arunachal Pradesh. This is situated kms far from city NAHARLAGUN. Total Population of Village is 163 and household count is 24. For Education Village has facility of school.For higher education village also has .Village also has nearby education facility of .For health care village also has .Nearest water sources are Hand Pump. Waste water flows by open Drainage.