Where are the biggest expat communities in the Czech Republic in 2026?

Prague is the national capital, the deepest labour market, and the strongest embassy and multinational magnet. Czech Statistical Office regional foreigner tables keep showing the capital holding the largest share of registered foreigners by a wide margin, far ahead of every other region. That concentration matters because large communities come from jobs and long stays, not from weekend tourism around Charles Bridge.

On the ground, the community is spread across districts rather than one labelled expat quarter. Vinohrady, Karlín, Letná, Holešovice, and parts of Žižkov carry more day-to-day international life than the Old Town visitor strip. The tradeoff is scale versus convenience: Prague offers more parallel circles, but also longer metro hops between them. See Living in Prague.

Brno is usually the strongest second answer. South Moravia follows Prague and Central Bohemia in the regional foreigner map, and Brno itself has enough universities, tech offices, and newcomer services to support a real city scene. The Brno Expat Centre is a practical marker of that depth: free seminars, informal meetings, and a clearer municipal welcome than many second cities offer. Brno also feels more compact, so you see the same people again faster than in Prague. Compare the cities in Prague vs Brno and Living in Brno.

Central Bohemia works differently. Many foreigners live in the ring around Prague because housing is cheaper or larger, then commute into the capital for work and social life. That makes the region large in residence counts without creating one walkable international centre of its own. If you want community density, you still plan around Prague districts and transit, not a separate Central Bohemia hub.

Ostrava and other regional cities still have international residents through industry, campuses, and services work. The difference is social density. You may find enough people for one useful circle without finding enough people for many parallel circles. That is the gap movers feel after arriving from Prague or Brno.

Citizenship composition also varies by city. Ukrainian, Slovak, and Vietnamese communities are among the largest foreign groups nationally, but the English-speaking professional calendar and nationality-based social life are not the same thing. A city can look international in census terms and still feel thin if your only channel is one office team. Broader fit sits in Where to live in the Czech Republic.