Texas Subcategories This category has the following 7 subcategories, out of 7 total. Categories by city in Oregon (1 C)B Buildings and structures in Oregon by populated place (33 C)E Education in Oregon by populated place (9 C)G Geography of Oregon by populated place (3 C)N National Register of Historic Places in Oregon by populated place (7 C)O Organizations based in Oregon by populated place (5 C)P People by populated place in Oregon (121 C)