Could living in colorado help reduce my allergies?

Possibly: If one has pollen allergies, moving to an area where there is different vegetation could help, at least until new sensitivities develop. Dust mite allergies often improve at very high elevations, since fewer dust mites exist there.

Absolutely: while there allergens here in CO, often people experience a reduction in this climate

It depends: Colorado does have fewer of certain allergens. However, the allergens that CO does have get blown around more easily due to the dry dusty conditions. Of note, dust mite levels do decrease if you reside above 3000 ft altitude. So it depends on what you are allergic to. Some people's allergies are better in Colorado and others are worse.