About 170 of the world’s roughly 195 sovereign nations are countries with a unitary government, making it by far the most common system on the planet. Only around 25 states operate as federations. In a unitary system, one central authority holds governing power across the whole national territory, and any regions, provinces, counties, or municipalities exist only because the center allows them to.
What “Unitary” Actually Means
A unitary government is one where the central authority is supreme everywhere in the country. Sub-national bodies may exist and may run schools, hospitals, and roads, but they draw every bit of their power from the central government. The center can create new local governments, redraw their boundaries, expand their responsibilities, or abolish them entirely.1Encyclopedia Britannica. Constitutional Law – Unitary, Federal, Systems
That does not mean unitary states are all tightly controlled from the capital. Many have devolved real decision-making authority to local governments over schools, healthcare, policing, and land use. The difference is that those powers come from ordinary legislation rather than the constitution, so they can be taken back without a constitutional amendment.
How Unitary Systems Differ From Federations
The roughly 25 federal countries include the United States, Canada, Germany, Australia, India, Brazil, Mexico, Nigeria, Switzerland, and Argentina.2Forum of Federations. Federal Countries Every other recognized sovereign state uses some version of a unitary structure. A few practical differences matter more than the label.
In a federation, regional governments hold powers written into the constitution itself, and the national government cannot simply revoke them. In a unitary state, regional powers come from central legislation and can be narrowed or widened by the center at will.1Encyclopedia Britannica. Constitutional Law – Unitary, Federal, Systems Federal constitutions typically require some number of regional legislatures to consent before amendments take effect; unitary states generally do not. When the national and a regional government disagree in a federation, courts settle it by reading the constitution. In a unitary state, the center effectively settles it by retracting delegated authority.
Policy tends to look different, too. Unitary systems produce more uniform national rules because laws originate from a single source. Federations often produce a patchwork on issues like education, criminal law, and taxation.
The line is not always clean. Some unitary states have devolved so much power that they resemble federations in practice, and some federations have central governments that dominate their regions. The United Kingdom and Spain are unitary but are sometimes called “quasi-federal” because of the powers their regional governments exercise.
Countries With Unitary Governments, by Region
Unitary systems appear on every continent, in wealthy democracies and single-party states alike. What varies is how much authority the center keeps in its own hands.
Europe
France is the textbook example. Under its 1958 Constitution, France is a unitary state organized on a decentralized basis. The central government holds exclusive authority over defense, foreign affairs, justice, and security, and parliament alone can pass laws. Regions, departments, and municipalities exist but cannot legislate; they exercise their functions through regulations and budget execution.3Committee of the Regions. France Introduction Reforms in 1982 and 2003 gave regional and departmental councils more administrative autonomy, and in 2016 France consolidated its 22 metropolitan regions into 13. All of that came through ordinary law.
The United Kingdom is unitary with an unusual twist. Since 1999, Scotland, Wales, and Northern Ireland have had devolved parliaments or assemblies with varying legislative powers. But Westminster retains absolute sovereignty and could, in theory, legislate on any matter in any part of the UK or abolish the devolved bodies.4Committee of the Regions. United Kingdom – Summary In practice it would not normally do so without the consent of the devolved government concerned, but no constitutional barrier prevents it.
Italy’s 1947 Constitution describes the republic as unitary while recognizing local autonomy and decentralization. It is often classified as “regionalized,” with 20 regions (five holding special autonomy statutes), though regional powers still derive from the national constitutional framework.5Committee of the Regions. Italy Introduction
Sweden is a unitary and decentralized state whose constitution recognizes local self-government. The central government keeps exclusive power over justice, foreign affairs, finance, and defense, while regions handle healthcare and public transport, and municipalities run education, social welfare, and emergency services.6Committee of the Regions Portal. Sweden Intro
Norway follows a similar Nordic pattern. The central government holds overriding authority, but municipalities deliver most day-to-day services, including primary schools, kindergartens, primary healthcare, and elder care. To keep quality even across a country with wide variation in local tax revenue, the center redistributes funds through a general grant scheme.7regjeringen.no. Local Government in Norway
Turkey’s constitution builds its administration on centralization combined with limited decentralization. The country is divided into 81 provinces, each headed by a governor appointed by the central government. Local elected bodies exist, but the constitution gives the central administration supervisory power over them.8SNG-WOFI. Republic of Turkiye Country Profile
Asia and the Pacific
Japan is a unitary state led by a prime minister and cabinet drawn from a bicameral legislature. Its 47 prefectures and more than 1,700 municipalities are codified in the Local Autonomy Law under the postwar constitution. Local government delivers most sub-national public services, but central ministries and subsidies shape the policy framework heavily. For most of the postwar era, one analysis described local government as “an extended family of the central state as its delivery arm.”9Japan Local Government Centre. Japan: Designated and Core Cities – A Briefing
China operates as a unitary state under the leadership of the Chinese Communist Party. The central government exercises extensive control over provinces, autonomous regions, and municipalities. Hong Kong and Macau hold a “high degree of autonomy” under the “one country, two systems” principle, with their own legal and economic systems. That autonomy is granted by the central government through Basic Laws, not held by independent constitutional right, and Beijing has legislated directly for those regions on matters it deems relevant to national security.10Hong Kong Legal Hub. “One Country, Two Systems” and The Basic Law
Indonesia declares itself a unitary state in the very first article of its constitution. It is divided into provinces, regencies, and municipalities, each with regional authorities that manage their own affairs under principles of regional autonomy. Provinces exercise “wide-ranging autonomy” in most areas, with exceptions reserved to the central government.11BAPETEN. 1945 Constitution of the Republic of Indonesia For a nation of more than 17,000 islands and hundreds of ethnic groups, the unitary label carries political weight, signaling that the archipelago is one country rather than a loose collection of autonomous regions.
South Korea is a unitary presidential republic. The national government sets policy for provinces and metropolitan cities.12The Cove – Australian Army. Republic of Korea The Philippines is also unitary, with local government units that hold administrative and some political autonomy under a national Local Government Code. That code tells courts to interpret any ambiguity about local powers in favor of devolution, giving Filipino local governments a somewhat stronger footing than local governments in more tightly centralized unitary states.13Office of the Ombudsman. Unpacking the Local Government Code of 1991
Africa and the Americas
Kenya is a unitary state divided into 47 counties, each with an elected governor and county assembly.14Kenya Embassy. The Government and the Political System The 2010 constitution made devolution a core governing principle and gave counties significant responsibilities over local healthcare, agriculture, county roads, and trade regulation.15Parliament of Kenya. The Constitution of Kenya, 2010 Kenya’s devolution is one of the most ambitious in Africa, but the country remains formally unitary; the two levels of government are described as “distinct and inter-dependent,” not sovereign equals.
Chile is a unitary democratic republic whose regions are administered indirectly by the president. Colombia and Peru are also prominent unitary states in the Americas, with central governments that keep ultimate authority despite varying levels of decentralization to departments and regions.
Most African countries are unitary, including Egypt, Ghana, Tanzania, and Morocco. South Africa is sometimes classified as federal or quasi-federal given its constitutional protections for provinces, which shows how blurry the line between “heavily decentralized unitary” and “loosely federal” can get.
How Much Power the Center Actually Shares
The practical question in a unitary state is not whether the central government is supreme. It is. The question is how much day-to-day governance it delegates, and through what levers it keeps control.
Delegation and devolution both happen under unitary systems, and the distinction matters. Delegation means local officials carry out central policy, as with a Turkish provincial governor implementing central directives. Devolution goes further, giving local bodies authority to make their own policy decisions within defined areas, as with the UK’s arrangement with Scotland. Either can be reversed by the center.
Money is the strongest lever. In many unitary states, the central government collects most tax revenue and redistributes it to local governments through grants and transfers. That gives the center influence over local priorities even where formal autonomy over service delivery exists. Norway’s grant equalization scheme is a good example: municipalities have freedom to set priorities, but much of their funding follows a central formula built to keep service standards even nationwide.7regjeringen.no. Local Government in Norway A local government that depends on the center for its budget is autonomous only up to a point.
Trade-Offs
The biggest advantage of a unitary system is simplicity. One government sets policy, and that policy applies everywhere. There is no need to reconcile conflicting state and federal regulations, no jurisdictional turf wars, and no race to the bottom between sub-national governments competing to attract investment. For a country that wants consistent national standards in education, healthcare, or infrastructure, a unitary system delivers them by default. It also tends to respond faster in a crisis, since a single authority can allocate resources and pass emergency legislation without negotiating with semi-autonomous regions.
The same centralization can make unitary systems unresponsive to local conditions. A national education policy designed in the capital may not fit a rural province with different economic realities, languages, or cultural needs. Concentration of power is the more serious concern: when most governmental authority sits with a single body, the checks that come from dividing power among competing institutions are weaker. History includes cases where leaders in unitary states consolidated power by eroding local autonomy, judicial independence, and legislative oversight, moves that are structurally harder in a federation where regional governments hold constitutionally protected authority and their own democratic mandates.
Capital-city dominance compounds the problem. In many unitary states, government agencies, lobbying activity, and infrastructure investment cluster in the capital, which draws people and business toward it. The pattern is especially pronounced in Latin American and African unitary states with colonial legacies of strong central governments and weak local institutions, and the result can be stark inequality between the capital region and everywhere else.