who were the early settlers here?
Paleo-Indians
Oregon
While there is considerable evidence that Paleo-Indians inhabited the region, 
when was the last time crater lake volcano erupted Approximately 7,700 years ago what is the name of the volcano? Mount Mazama where is it located? In the state of Oregon, United States how many people live in this state? The United States Census Bureau estimates that the population of Oregon was 4,217,737 on July 1, 2019
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Oregon [SEP] Earliest inhabitants
While there is considerable evidence that Paleo-Indians inhabited the region, the oldest evidence of habitation in Oregon was found at Fort Rock Cave and the Paisley Caves in Lake County. Archaeologist Luther Cressman dated material from Fort Rock to 13,200 years ago, and there is evidence supporting inhabitants in the region at least 15,000 years ago. By 8000 BC there were settlements throughout the state, with populations concentrated along the lower Columbia River, in the western valleys, and around coastal estuaries. During the prehistoric period, the Willamette Valley region was flooded after the collapse of glacial dams from then Lake Missoula, located in what would later become Montana.