Monument Map
Monument is a city in Grant County, Oregon, United States. The population was 151 at the 2000 census. It is located near the confluence of the North Fork and Middle Fork of the John Day River.
According to the United States Census Bureau, the city has a total area of 0.5 square miles (1.4 km²), all of it land.
As of the census of 2000, there were 151 people, 68 households, and 41 families residing in the city. The population density was 281.0 people per square mile (108.0/km²). There were 81 housing units at an average density of 150.7 per square mile (57.9/km²). The racial makeup of the city was 95.36% White, 3.97% Native American, and 0.66% from two or more races.
Nearby cities include Long Creek, Spray.