Moving to Colorado: City Guides, Checklist & Tips
Updated July 2026
Colorado charges a flat 4.4% state income tax no matter which of its cities you choose, but the cost of living swings widely depending on where you land: Denver's index of 127.6 (27.6% above the national average) sits between Colorado Springs' 111 and Boulder's 148, the most expensive of the three. Denver, the state's largest city at 715,522 residents (2.9 million metro), anchors a diversified economy in aerospace, healthcare, and tech at a median home price of $578,000. Colorado Springs, population 502,306, runs more affordable at a $450,000 median home price and is built around the state's densest concentration of military and defense employers. Boulder, the smallest of the three at roughly 105,000 residents, carries the steepest housing cost — a $875,000 median home price — tied to CU Boulder and a dense research-and-aerospace corridor. This hub collects our city-by-city relocation guides for Colorado, plus the practical steps to become a resident.
Colorado City Guides
Boulder
300 days of sunshine, Flatirons hiking, and CU Boulder — at the steepest housing cost of the three.
Read the Boulder guide →Denver
Colorado's largest city — a diversified economy in aerospace, healthcare, and tech, an hour from the Rockies.
Read the Denver guide →Colorado Springs
The state’s military and defense hub, at the base of Pikes Peak, with the most affordable housing of the three.
Read the Colorado Springs guide →
Colorado Living and Vacationing Quick Reference
Living here
- State income tax
- A flat 4.4% no matter which Colorado city you live in
- Sales tax
- 2.9% statewide as of 2026, reaching 9.15% combined in Denver once city and district taxes are added
- Median home price
- From $450,000 in Colorado Springs to $578,000 in Denver to $875,000 in Boulder, as of 2026
- Cost of living
- Colorado Springs at index 111, Denver at 127.6 (27.6% above the national average), Boulder highest at 148
- Driver's license deadline
- 30 days after establishing residency, with vehicle registration due within 90 days
- Population
- About 6 million as of 2026, concentrated along the Front Range
Visiting first
- Main airport
- Denver International (DEN), the largest airport by land area in North America
- National parks
- Four — Rocky Mountain, Mesa Verde, Great Sand Dunes, and Black Canyon of the Gunnison
- Best scouting months
- June through September, when mountain passes are clear and most trails are snow-free
- The altitude, honestly
- Denver sits a mile high, and most visitors adjust within a day or two — but arriving from sea level and heading straight to a higher ski town can bring on headache or fatigue
- Three very different cities
- Denver's tech-and-aerospace economy, Colorado Springs' military and defense base, and Boulder's university-and-research corridor sit within an hour of each other but price out very differently
- Getting around
- Interstate 25 links Boulder, Denver, and Colorado Springs along the Front Range; I-70 is the main route into the mountains
How Colorado Got Its Name
Colorado takes its name from the Spanish colorado — "colored red" — for the ruddy silt the Colorado River carries down from the mountains. When the Senate named the territory in 1861, it reasoned that the Colorado River "arose in its mountains." It didn't. For the state's first 60 years, the river inside its borders was called the Grand; the Colorado officially began downstream in Utah, where the Grand met the Green. Congressman Edward Taylor of Glenwood Springs found that intolerable, and in 1921 he persuaded Congress to rename the Grand — so Colorado finally contained the river it was named for.
How to Become a Colorado Resident
Establishing residency unlocks a Colorado driver's license, vehicle registration, in-state tuition, and resident access to state parks and programs. You establish residency in Colorado by doing any one of the following — you don't need all of them:
- Renting or buying a house or apartment in Colorado
- Being employed within Colorado
- Being registered to vote in Colorado
- Having a business located in Colorado
- Having children who attend a Colorado primary or secondary school
Colorado Moving Checklist
- Transfer your driver's license and register your vehicle — separate deadlines, see the quick reference above
- Register to vote at your new address
- Update your car insurance policy to meet Colorado minimum coverage requirements
- Update your health insurance and find new healthcare providers — a move qualifies you for a Special Enrollment Period
- Transfer medical, dental, and school records, including your child’s vaccine records
- Set up utilities and file your change of address with USPS
- Review the tax picture: Colorado has a flat 4.4% state income tax
Questions Movers Ask About Colorado
Does Colorado have an income tax?
Yes — a flat 4.4% no matter how much you earn or which Colorado city you live in. Sales tax is layered on top: 2.9% at the state level, reaching 9.15% combined in Denver once city, RTD, and cultural district taxes are added.
How expensive is it to live in Colorado?
It depends heavily on the city. Denver runs a cost of living index of 127.6 (27.6% above the national average) with a $578,000 median home price. Colorado Springs is more affordable at index 111 and a $450,000 median home. Boulder is the priciest of the three at index 148 and an $875,000 median home, driven by CU Boulder and its research-and-aerospace corridor.
How long do I have to get a Colorado driver's license after moving?
30 days. Colorado requires new residents to transfer their driver's license within 30 days of establishing residency, and to register any vehicle within 90 days.
How many national parks does Colorado have?
Four: Rocky Mountain National Park, Mesa Verde, Great Sand Dunes, and Black Canyon of the Gunnison. Rocky Mountain, an hour from Denver, is the most visited of the four.
Will I feel the altitude in Colorado?
Most people adjust within a day or two of arriving in Denver, which sits at 5,280 feet. Some notice a headache, fatigue, or shortness of breath, especially if they fly in and head straight to a higher mountain town or trailhead. Drinking more water than usual and taking it easy the first day helps.
Which Colorado city should I move to?
It depends on what you're optimizing for. Denver offers the largest and most diversified economy — aerospace, healthcare, and tech — at a mid-range cost of living. Colorado Springs is the most affordable of the three and built around the state's densest concentration of military and defense employers. Boulder carries the steepest housing cost but pairs it with CU Boulder and a dense research-and-aerospace corridor.
Moving to Colorado from Another State?
We compare the two states side by side — taxes, housing, and what changes on day one:
Sources and Data Notes
Residency options, license and vehicle-registration deadlines, and tax rates on this page reflect requirements published by the Colorado Department of Revenue, which runs both the state DMV and taxation divisions. Cost, housing, and job-market figures draw on the public datasets used across ScoutLocale's city guides, including the U.S. Census Bureau, the U.S. Bureau of Labor Statistics, BestPlaces.net, and Niche.com.
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