Our study isn't exactly scientific — in fact, it's not scientific at all — but it's a fun experiment. And it appears that the RADDERs have it.
We had about 1,700 responses to our two questions, which asked people to self-report whether they are a Colorado native and their preferred pronunciation based on our phonetic spellings.
One thing we weren't honestly expecting was to somewhat confirm the conventional wisdom that natives say "Colo-RAD-o," but our results indicate more than two-thirds do. Meanwhile, transplants are a bit more than 50 percent more likely to be RODDERs.