Finally, 562 posts and something I know about.
colorado native, born here, lived quite a bit of my life here.
Lived in Lakewood, Golden and now Longmont.
Most of the population is along the front range, Denver, Ft collins, Colorado springs. some is in Grand Junction, the rest of the state is sparsely populated. Denver (metro area, not just denver) has changed A LOT in the last 15 years. In 1990, it had about 1 million population, it's now well over 2 million. Not for the better in my opinion. Water is a serious issue here and there is more growth than water.
Housing is way overpriced and due for a fall. A starter home in most of the front range is over 200k.
Taxes are not bad. State sales tax of about 3%. Most cities add on anywhere from 4 to 6%. Income tax is 4.25% of income and property tax is approximately 1% of value. (more or less, depends on where you go, special districts, etc, but more or less 1%). Denver (the city) has an employment tax of like $2 a week, no one else does.
Registerting a car is ridiculously expensive. It's by weight and value so big SUV's and trucks cost a ton. I'm expecting my new chevy 2500HD to be close to or over 1000 dollars for the first year. It does drop off, by year 10 it's only 15 bucks a year.
The state has gotten much more liberal (and not in a good way) and politics are about to get very interesting. Traffic is bad, but there are some good ways to go to get around.
Weather is very mild. We have like 300 days of sunshine per year, humidity is very low (bring lotion, you'll dry out for a long time til you get used to it) and we only get like 13 inches of moisture a year (in front range, mountains get much more). The front range gets some INTENSE weather. We get blizzards, windstorms, huge hailstorms, and tornado's, esp out further east. It is windy here and this year has been esp. dry andy windy. (and the wind is getting OLD)
Gun laws are very good, except in Denver proper. Most of the gun ranges have moved out east (more land, fewer neighbors, etc). there are more than a couple colorado shooting web sites. There are some excellent gun stores scattered about.
Feel free to PM me, and welcome back to America.