Flag of United States

United States

The United States spans a continent of extremes, from major coastal cities to national parks of vast scale, with Washington DC as its capital. It is the world's largest economy and a global centre for technology, finance, entertainment and higher education. Visa requirements depend on nationality: citizens of Visa Waiver Program countries can enter with an ESTA for up to 90 days, while other visitors require a visa obtained through a US embassy or consulate, typically with an in-person interview.

  • CapitalWashington
  • CurrencyUSD $
  • TimezoneMultiple time zones (UTC-5 to UTC-10; more with Alaska/Hawaii/territories)
  • Population342 Million
  • RegionAmericas · Northern America
  • Phone code+1

USA Visa & Immigration System

The US visa system is one of the most complex in the world. Citizens of the Visa Waiver Program (VWP) countries — most of Europe, Japan, South Korea, Australia and New Zealand among them — can enter with an ESTA (Electronic System for Travel Authorization) for tourism or business stays of up to 90 days. ESTA must be applied for online at least 72 hours before travel and is valid for 2 years. All other nationalities require a visa obtained through a US embassy or consulate, typically involving an in-person interview. The most common nonimmigrant visa categories are B-1 (business) and B-2 (tourism), often issued as a combined B-1/B-2. Work visas include the H-1B (specialty occupations), L-1 (intra-company transfers), O-1 (extraordinary ability) and E-2 (treaty investors). Student visas (F-1, J-1) require acceptance at a SEVP-certified institution. Having a valid visa or ESTA does not guarantee entry — final admission is determined by Customs and Border Protection (CBP) officers at the port of entry. Processing times vary significantly by embassy and visa type — interview wait times at some embassies run two to three months — so apply well in advance. Overstaying an authorised ESTA or visa period can lead to deportation, a formal entry ban and complications obtaining future visas, so compliance with the authorised stay is taken seriously.

Visa types

Up to 90 days per visit; ESTA valid for 2 years; cannot be extended

Tourism, business meetings, transit for citizens of the Visa Waiver Program countries (UK, Germany, France, Italy, Spain, Japan, South Korea, Australia, New Zealand and others). Applied for online — no embassy visit needed. Must have a machine-readable passport.

Guides

The United States is a country of continental scale where the diversity — geographic, cultural, culinary, climatic — defies any single characterisation. New York City anchors the East Coast with Manhattan's skyline, Broadway and a food scene spanning corner pizza slices to Michelin-starred tasting menus, while Los Angeles and San Francisco define the West Coast's mix of entertainment industry and tech ecosystem. Chicago, Miami, New Orleans and Washington DC each carry their own distinct character, from deep-dish pizza and blues to Latin-inflected Art Deco and free Smithsonian museums. Beyond the cities, the national parks deliver scale on a different register entirely: the Grand Canyon, Yellowstone's geysers, Yosemite's granite walls, Utah's red-rock deserts, and the volcanic landscapes of Hawaii. The American road trip — landscapes shifting from desert to forest to coastline within a single day's drive — remains one of the world's defining travel experiences. And the food reflects the country's regional and immigrant diversity in equal measure: Texas barbecue, Maine lobster, Louisiana gumbo, California farm-to-table and the cuisines of nearly every immigrant community, available in every major city.

United States travel guide →

The full guide — regional routes, the parks, the music cities, and the two-week shapes that actually work.

Money in United States →

Dollars, cards and tipping culture — the practical money guide.

Eating in United States →

Barbecue's four regional answers, Creole vs Cajun, and the immigrant kitchens layered over every city.

Getting around United States →

Why the country runs on cars and planes, renting across state lines, and the one corridor where the train wins.

Health & safety in United States →

Why safety is a local question, the ER-versus-urgent-care choice that saves real money, and the seasonal hazards by region.

Cities & planning

AtlantaBostonChicagoDallasTexasDenverColoradoHonoluluHawaiiHoustonTexasKansas CityLas VegasLos AngelesCaliforniaMemphisMiamiFloridaNashvilleNew OrleansLouisianaNew York CityNew YorkOrlandoFloridaPhiladelphiaSan DiegoCaliforniaSan FranciscoCaliforniaSeattleWashingtonWashington, D.C.District of Columbia

Regions

Embassies & missions

Asia · 36

Europe · 35

Africa · 39

Frequently asked questions

It depends on your nationality. Citizens of Visa Waiver Program countries — including the UK, most of the EU, Japan, South Korea, Australia and New Zealand — can enter with an ESTA for stays up to 90 days. Other nationalities need a visa, typically a B-1/B-2 visitor visa, obtained through a US embassy or consulate with an in-person interview.

At least 72 hours before travel, though applying further ahead is safer in case of delays or a need to correct an error. ESTA is valid for two years or until your passport expires, whichever comes first, and cannot be extended beyond the 90-day per-visit limit.

No. Final admission is always at the discretion of Customs and Border Protection officers at the port of entry, regardless of a valid visa or ESTA. Be ready to answer questions about your travel purpose, accommodation and financial means.

This overview comes from Visaja's worldwide missions database (visaja.com), checked against official government sources; for binding answers, the mission itself always has the final word.