Pretty big and getting bigger.  In the 7 County region including Douglas County but not Elbert) there are over 3.1 million people.  And Denver CO has added 10.5% to its population since 2010.  Not sure how many households 300,000 people is, but this is why we have a sellers market...because we don't have enough listings to match the demand and builders aren't building them fast enough.  Who would have ever thought this was going to happen in 2010?