The question is about *land* area of states and *land* area of the UK: we're not counting, lakes, sea areas and so on. The land area of the UK is 93,410 sq mi; the land area of Oregon is just 2.8% greater at 95,988 sq mi. By contrast Colorado is 11% larger (103,642 sq mi) and Utah is 12 percent smaller (82,170 sq mi). Montana is much larger (147,040 sq mi).

More Info: en.wikipedia.org