
United States Β· North America
North America

CIA World Factbook / national censuses
Pick your passport to see whether you can enter United States β and what it takes to stay.
Entry rules come from github.com/imorte/passport-index-data, updated 17 February 2026. They change without notice β confirm with the official immigration service before booking.
There is no post-arrival registration in the US: your I-94 record is your status. In the first weeks you need a Social Security number if work-authorised, or an ITIN if not. Colorado's specific administrative feature is that every driver licence office visit is by appointment only β there is no walk-in option β so the 30-day transfer deadline is really a deadline to have booked, not to have turned up.
Read the full step-by-step guideYou must transfer your licence within 30 days of becoming a Colorado resident, and every DMV visit is by appointment only. Colorado maintains reciprocity with a small number of countries whose licence holders skip both tests; everyone else follows the standard permit and licensing route. The other half of driving here is the mountains: Colorado enforces a traction law on I-70 in winter, and it carries real fines.
Read the full step-by-step guideYou can open a US account without a Social Security number: federal rules let a bank use your passport number and country of issuance, or an ITIN, as the identifying number. The credit problem is the standard American one β no US file scores worse than a bad one. In Denver it bites first on car finance, because the mountains make a vehicle close to essential if you came here for the outdoors.
Read the full step-by-step guideCoverage comes from an employer, from Connect for Health Colorado, or from Health First Colorado if your income qualifies. Colorado expanded Medicaid, so there is no coverage gap below the subsidy floor, and it also created OmniSalud β a state programme offering subsidised plans to residents regardless of immigration status. The distinctly local medical issue is altitude, which genuinely affects newcomers, people with cardiac or respiratory conditions, and pregnancies.
Read the full step-by-step guideThe US has no SIM registration requirement, so getting connected is trivially easy: buy a prepaid SIM or eSIM and it works immediately. The friction is postpaid contracts, which run a credit check you cannot pass on arrival. In Colorado the real consideration is what happens when you leave the Front Range β much of the mountain terrain has no signal at all.
Read the full step-by-step guideColorado taxes income at a single flat rate of 4.4%, applied to federal taxable income β which makes the state return unusually simple. Denver adds no income tax, though it charges a small monthly occupational privilege tax on employees earning above a threshold. Colorado's TABOR provisions require surplus revenue to be returned to taxpayers, so in some years the effective rate is lower than the headline.
Read the full step-by-step guideEach guide has verified costs, timelines, required documents, and the non-obvious gotchas β sourced from official government pages. Last verified August 2026.
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All applicants must make an appointment to visit a driver licence office. You must transfer your licence within 30 days of becoming a resident, while the state also expects 90 consecutive days of Colorado residence for certain purposes. Appointments in the Denver metro book out, so make one the week you arrive rather than the week before the deadline.
Unlike California, which waives nothing for anyone, Colorado has arrangements with a small number of countries that skip the written and driving tests. Japan is the clearest example: you present an original Verification Certificate of Driver License issued by the Consul General of Japan in Denver within the previous three months. If your country is on the list, the process collapses from weeks to one appointment.
Denver is a mile above sea level. Expect breathlessness on stairs, disrupted sleep, faster dehydration and alcohol hitting roughly one-and-a-half times as hard for your first two weeks. UV exposure is around 25% stronger than at sea level β sunburn in February on a ski slope is routine. Drink far more water than feels necessary and take the first fortnight of exercise gently.
Colorado taxes income at a single flat rate, and Denver levies no city income tax β though it does charge a small monthly occupational privilege tax on employees earning above a threshold. Colorado's TABOR provisions also periodically return surplus revenue to taxpayers, which can reduce the effective rate in a given year. It is one of the more benign big-city tax positions in the country.
SSA verifies your status against DHS records that lag entry by one to two weeks, so an immediate visit usually wastes the trip. Only work-authorised people qualify; everyone else files IRS Form W-7 for an ITIN. The card is free.
Denver built apartments aggressively through the 2020s and the market loosened as a result β concessions like a free month are common in newer buildings, and negotiating is realistic. This is unusual among fast-growing US cities and it will not last forever, but while it holds, do not accept the advertised rent without asking what else is on the table.
Lockheed Martin Space, Ball Aerospace, Sierra Space, United Launch Alliance, Maxar
Colorado has one of the highest concentrations of aerospace employment per capita in the US, largely along the Front Range south of Denver β though many roles need clearance and citizenship.
NREL, NOAA, NIST, NCAR, USGS
The BoulderβGolden corridor holds an unusual density of federal research labs, particularly in renewable energy, atmospheric science and metrology.
Xcel Energy, Occidental, Vestas, Chevron
A genuinely split sector β Colorado is both a significant oil and gas producer and a leading wind and solar manufacturing state, and the politics of that tension are local.
Comcast, DISH Network, Charter, Liberty Media, Zayo
The Denver Tech Center corridor has been a telecoms hub since the cable industry consolidated here in the 1980s.
VF Corporation, Otterbox, Icelantic, Osprey
VF Corporation moved its headquarters to Denver in 2019, cementing a cluster that already existed around the state's outdoor culture.
Palantir, Google (Boulder), Guild, Ibotta, Checkr
A real and growing scene, weighted to enterprise software and marketplaces, with Boulder functioning as a distinct startup ecosystem thirty miles north.
Culture Β· Morrison, 30 minutes west
A natural amphitheatre between two 90-metre sandstone monoliths, and among the best-regarded concert venues in the world.
Local tip: Free to visit and use on non-event days β locals run the stairs as a workout at dawn. Check the schedule before driving out; on show days the park closes to casual visitors.
Nature Β· 90 minutes north-west
415 square miles of alpine tundra, glacial valleys and elk, with Trail Ridge Road crossing above 12,000 feet.
Local tip: Timed-entry reservations apply in peak season and sell out β book the moment they release. Go on a weekday; Bear Lake on a summer Saturday is a car park with a view.
Landmark Β· LoDo
An 1881 station restored into a working transit hub with a hotel, bars and restaurants in the great hall.
Local tip: The A Line train from here to the airport takes 37 minutes and costs a fraction of a taxi β the single most useful thing to know on arrival. The Terminal Bar was the old ticket office.
Culture Β· Golden Triangle
A Daniel Libeskind-designed wing beside a Gio Ponti tower, with the largest Indigenous American art collection in the country.
Local tip: Free for under-18s always, and the Indigenous Arts of North America galleries are the reason to come rather than the architecture everyone photographs.
Neighborhood Β· River North
A former industrial district covered in large-scale murals, with breweries, galleries and the food hall scene Denver does well.
Local tip: The murals change constantly β the Crush Walls festival repaints much of the district each September. Walk Larimer and the alleys off it rather than following a list.
Nature Β· Morrison, 40 minutes west
Foothills trails past the ruins of John Brisben Walker's castle and an abandoned 'summer White House' foundation built for presidents who never came.
Local tip: Most newcomers drive straight past to the famous trailheads and queue. Mount Falcon has the same foothills views, genuine ruins, and a fraction of the people on a Saturday.
Side-by-side cost of living, language, climate and careers β to help you choose.