City of Denver Official Site
Colorado State Site
Denver Chamber of Commerce
Douglas County
Arapahoe County
Jefferson County
Adams County
Boulder County
Colorado County information- general, census, etc.
Colorado Income tax is a flat 4.63% based on your Federal taxable income
Colorado Sales Tax is 2.9%
Denver sales tax is 3.5%, and 4% on food and liquor for immediate consumption.
Property taxes vary by county. Use 1% of the market value as a loose guide. Often it is less.