Monument is located in Grant County. About 115 people live here (as of 2020). Between 2010 and 2020, the population declined from 128 to 115. The region is at 600 meters above sea level. The area covers about 1.3 square kilometers. There are about 15 streets in Monument. The region was founded in 1905. The postal codes are 97864. The dialing code is 458. The name originates from Monument Mountain (mountain) Monument is city in Oregon, USA. Among other things, Monument has schools. More information at
www.angelfire.com/or2/Monument.