Is Luxembourg a Country or a City? The Basics About the World's Last Grand Duchy

One of the most-Googled questions about Luxembourg is also the most fundamental: is Luxembourg a country or a city? The answer is both. Luxembourg is a sovereign nation in the heart of Western Europe, and Luxembourg City is its capital. Adding to the confusion, 'Luxembourg' is also the name of the country's surrounding administrative district and a Belgian province across the border. Here is the compact primer.

Country basics

Official name: Grand Duchy of Luxembourg (Groussherzogtum Lëtzebuerg)

Capital: Luxembourg City (population ~135,000)

Total population: 681,973 on 1 January 2025 (STATEC)

Area: 2,586 km² — one of the smallest sovereign states in Europe, just bigger than Greater London

Currency: Euro (EUR), since 1999 (electronic) and 2002 (cash)

Official languages: Luxembourgish, French, German

Borders: Belgium, France, Germany

EU member: founding member, 1957 (Treaty of Rome)

Schengen member: yes — the Schengen Agreement was signed in the Luxembourgish village of Schengen in 1985

The world's last Grand Duchy

Luxembourg is the only sovereign Grand Duchy left in the world. The reigning monarch is Grand Duke Guillaume V, who acceded to the throne on 3 October 2025 after his father, Grand Duke Henri, abdicated following a 25-year reign. The role is constitutional and largely ceremonial — Luxembourg is a parliamentary democracy, with the government led by a Prime Minister. Since November 2023 that has been Luc Frieden, of the Christian Social People's Party (CSV), heading a coalition with Xavier Bettel's Democratic Party that holds 35 of 60 seats in the Chamber of Deputies.

Capital and major cities

Luxembourg City is the political, economic and cultural capital. Its old town and fortifications are a UNESCO World Heritage Site. The country's second city is Esch-sur-Alzette in the south (~36,000), followed by Differdange and Dudelange. The northern town of Ettelbruck is the gateway to the Ardennes region.

Currency and cost of living

Luxembourg uses the Euro. It was a founding eurozone member when the currency went live for accounting in 1999 and as cash in 2002, replacing the Luxembourgish franc. The cost of living is among the highest in the EU — housing in particular is exceptional, with average property prices in Luxembourg City exceeding €1 million.

How big is Luxembourg, really?

You can drive from Luxembourg's northernmost point (Troisvierges) to its southernmost (Mondorf-les-Bains) in about 90 minutes. The whole country fits comfortably inside the M25 motorway around London. That makes it the smallest founding member of the EU and one of the smallest countries in Europe by population — though Luxembourg is significantly larger than Andorra, San Marino, Monaco, Liechtenstein or the Vatican.

Why it punches above its weight

Despite its size, Luxembourg has the world's highest GDP per capita (~€146,820 in 2025), hosts a major cluster of EU institutions in the Kirchberg district (the Court of Justice of the EU, the European Court of Auditors, the European Investment Bank and the Secretariat of the European Parliament), and is the second-largest investment-fund domicile in the world. For a country of 681,973 people, that is a remarkable institutional and financial footprint.

Sources: Britannica — Luxembourg; Wikipedia — Luxembourg; STATEC, 2025 population release; Abdication of Henri — Wikipedia; DataReportal Digital 2026: Luxembourg.