The relationship between state and local governments in the United States defines the day-to-day experience of governance for most Americans. While these two levels of government often work closely together, they operate under fundamentally different grants of authority. State governments possess inherent sovereign powers derived from the state constitution and the people, while local governments — counties, cities, towns, and special districts — exercise only those powers delegated to them by the state. This distinction is not a technicality; it is the bedrock of how laws are made, taxes are levied, schools are run, and justice is administered. For students of civics and educators seeking to clarify the American system of federalism, understanding exactly what state governments can do that local governments cannot is essential to grasping how power flows in the United States.

The Constitutional Foundation of State and Local Power

The Tenth Amendment to the U.S. Constitution reserves to the states all powers not delegated to the federal government nor prohibited to the states. This principle, known as federalism, gives states broad police power — the authority to legislate for the health, safety, morals, and general welfare of their citizens. Local governments, by contrast, are creatures of their state. They have no independent constitutional existence in most state frameworks. Instead, they receive their authority through state constitutions, general laws, or home rule charters granted by the state legislature. This fundamental difference means that state governments can act unless explicitly prohibited by the U.S. or state constitution, while local governments can only act where specifically authorized by the state. This asymmetry creates a significant power gap between the two levels of government.

What State Governments Can Do That Local Governments Cannot

State governments hold a broad set of exclusive powers that local governments cannot exercise. These powers range from setting statewide legal standards to managing complex fiscal systems and engaging with other states. Understanding these exclusive powers reveals why state governments are the primary engines of public policy in the American federal system.

General Legislative Authority and Preemption

The most fundamental power held by state governments is comprehensive legislative authority over virtually any subject not preempted by federal law. State legislatures can pass laws governing everything from environmental regulations to marriage requirements, and from consumer protection to healthcare licensing. Local governments, even those with home rule charters, operate under the shadow of state preemption — a legal doctrine that allows state law to override local ordinances when the two conflict. This means that a city cannot create its own gun control laws if the state has explicitly reserved that regulatory field, nor can a county set its own minimum wage if a state law sets a ceiling. The power to preempt local action is a classic example of what state governments can do that local governments cannot.

Taxation and Fiscal Policy

While local governments levy property taxes and, in some states, sales taxes, state governments control the most powerful fiscal tools in the intergovernmental system. States can impose personal and corporate income taxes, which represent the largest single source of state revenue in most states. They also control the structure of state sales taxes, including which goods and services are exempt. In addition, state governments have the authority to issue general obligation bonds backed by the full faith and credit of the state, whereas many local governments face stricter constitutional or statutory debt limits. This superior fiscal capacity allows states to fund broad-based programs in education, healthcare (including Medicaid), and transportation — programs that no single local government could sustain on its own.

Education Standards and Funding

Public education in the United States is a state responsibility, not a federal one. Each state government sets the standards for curriculum, student assessment, teacher certification, and school accountability. While local school boards manage day-to-day operations and district-level policy, they do so within the legal framework established by the state legislature. States determine the minimum number of instructional days, high school graduation requirements, and the content of standardized tests. Moreover, states are largely responsible for the equitable distribution of education funding across wealthy and poor districts. When state courts find education funding systems unconstitutional, it is the state government — not local districts — that must redesign and implement a new system. This power over the foundational standards and financing of education is something local governments cannot replicate.

Criminal Justice and Corrections

The power to define crimes and prescribe punishments rests with the state government. State legislatures enact criminal codes that apply uniformly across all counties and cities within the state. Local governments can pass ordinances that create minor offenses, but these cannot conflict with state law and typically result in civil penalties rather than criminal records. State governments also operate the prison system, while local governments run jails primarily for pretrial detention and short sentences. The authority to set sentencing guidelines, define felonies and misdemeanors, establish parole systems, and regulate law enforcement standards across all jurisdictions are exclusive state powers. This means that while a city police department enforces the law, the content of that law — what constitutes theft, assault, fraud, or murder — is determined at the state level.

Interstate Relations and Compacts

The U.S. Constitution explicitly recognizes states as sovereign entities capable of entering into agreements with one another. Article I, Section 10 allows states to enter into interstate compacts with the consent of Congress. These compacts have been used to manage shared resources like water in the Colorado River basin, coordinate transportation infrastructure across state lines, and establish regional economic development authorities. Local governments have no such constitutional standing to enter into binding treaties or compacts with entities in other states. While local governments on opposite borders may cooperate informally, state governments negotiate formal agreements that carry the force of law across state boundaries. This power to represent the state in interstate negotiations and to commit the state to binding regional agreements is exclusive to the state level.

Statewide Initiatives and Referendums

In many states, the citizenry can directly propose and enact laws through the initiative process or approve or reject laws passed by the legislature through referendums. These processes are governed by state constitutional provisions and can result in binding laws that apply across the entire state. Local governments may have their own local initiative and referendum processes, but these are limited in geographic scope and cannot alter state law. A citizen-led initiative in Oregon to legalize recreational marijuana, for example, changed state law and preempted local ordinances that attempted to prohibit it. A city initiative, by contrast, can only change local policy within that city's jurisdiction. The power to fundamentally reshape state law through direct democracy is a state-level power that no local government can match.

Emergency Management and Public Health

When a natural disaster, disease outbreak, or other public health emergency threatens the state, the governor holds sweeping powers under state emergency management statutes. These powers include the authority to declare a state of emergency, order evacuations, close businesses and schools, commandeer private property for public use, and mobilize the state National Guard. While local officials can declare local emergencies, they do so under state authority and often require state approval for certain actions. During the COVID-19 pandemic, the power to impose statewide mask mandates, business closures, and travel restrictions was held by state governments. Local governments could only supplement state orders or request more restrictive measures if the state allowed it. This hierarchy of emergency authority is a critical example of state supremacy in governance.

Regulation of Commerce and Licensure

State governments have the authority to regulate commerce within their borders, including the licensing of professionals and businesses. Attorneys, physicians, nurses, real estate agents, and countless other professionals must be licensed by state boards that set educational, examination, and ethical requirements. This ensures that credentials are recognized statewide and, through reciprocity agreements, often across state lines. Local governments can impose business licensing requirements for operating within their jurisdiction, but they cannot license professions or set the qualifications for practice. A contractor may need both a state license (demonstrating competence) and a local business license (permitting operation), but the substantive standard is set at the state level. Similarly, state governments regulate insurance, banking, and securities within their borders, while local governments have no equivalent power.

The Limits on State Power: What States Cannot Do

While state governments wield extensive powers, they are not unlimited. The U.S. Constitution prohibits states from entering into treaties, coining money, impairing contracts, or passing ex post facto laws. The Fourteenth Amendment requires states to provide due process and equal protection under the law. Federal law preempts state law in areas such as immigration, intellectual property, and interstate commerce. State constitutions also impose limits — balanced budget requirements, restrictions on debt, and protections for individual rights that often exceed those in the federal Constitution. Understanding these limits provides the full picture of the state power dynamic and highlights why local governments, despite their subordinate position, retain meaningful autonomy over the issues that most directly affect daily life.

Where Local Governments Hold Their Own Ground

Despite the significant power advantage held by state governments, local governments exercise critical authority over community-specific matters. The powers that local governments can exercise — always within the permission and framework set by the state — include land use regulation, local law enforcement, municipal services, community development, and parks and recreation. These powers are not trivial. Land use zoning, for example, shapes the physical character of communities, influences property values, and determines where homes, businesses, and industrial uses are located. Local police departments are the first line of public safety. And the quality of local roads, water systems, and parks directly affects residents' quality of life. The difference is that these are delegated powers, not inherent sovereign powers. The state could, in theory, reclaim or restrict any of these local functions, although in practice most states respect local autonomy as a matter of tradition and political reality.

Land Use and Zoning

Zoning is perhaps the most iconic local power in the United States. Local governments use zoning ordinances to divide land into residential, commercial, industrial, and agricultural districts, and to regulate building heights, lot sizes, and density. This power fundamentally shapes communities and has enormous consequences for housing affordability, environmental quality, and economic development. State governments can override local zoning through preemptive legislation — as some states have done to allow accessory dwelling units or higher-density development near transit — but the baseline authority remains at the local level.

Local Law Enforcement and Policing

Municipal police departments and county sheriffs operate under local control, funded by local tax dollars and answerable to local officials. While state law sets the criminal code, local law enforcement decides how to prioritize enforcement of those laws in their communities. This local discretion is a significant power, influencing everything from traffic enforcement to the policing of quality-of-life offenses. State governments can set minimum standards for police training and conduct, but the day-to-day operation of policing is a local function.

Municipal Services

Local governments are responsible for providing essential services that residents interact with daily — water supply, sewage treatment, solid waste collection, street maintenance, and public transit. These services are funded primarily through local property taxes, user fees, and intergovernmental transfers from the state. While state governments set environmental and health standards for these services, the infrastructure belongs to the local government, and local officials decide how to operate and maintain it.

Community Development and Housing

Local governments administer building codes, issue permits for construction and renovation, enforce housing codes to ensure safe living conditions, and oversee community development programs. They also administer federal housing grants and tax credits in coordination with state housing finance agencies. This local authority over the built environment, while constrained by state building codes and fair housing laws, gives cities and counties significant influence over housing supply and quality.

Parks and Recreation

Local governments maintain public parks, playgrounds, community centers, swimming pools, and recreational programs. This function enhances community cohesion and public health, and while it may seem mundane, it is a power that directly affects residents' daily lives. State governments operate state parks and large recreation areas, but the network of neighborhood and community parks is a local responsibility.

Comparative Analysis: Federalism in Action

The division of powers between state and local governments is not static. It evolves through legislation, court rulings, and political shifts. In recent decades, a trend known as "preemption" has seen state governments increasingly assert their authority to limit local action on issues such as minimum wage, paid leave, firearms regulation, and environmental standards. This dynamic reflects the fundamental reality of the state-local relationship: the state holds the upper hand. At the same time, home rule states give local governments broad discretion over local affairs, creating a partnership model rather than a strictly hierarchical one. Understanding this spectrum — from states that heavily preempt local action to those that grant expansive home rule — is crucial for analyzing how federalism works at the subnational level.

For educators teaching civics, the key takeaway is that state governments are sovereign entities with general legislative power, while local governments are subordinate entities with only delegated powers. This distinction explains why state governments can do many things local governments cannot — from imposing income taxes and setting criminal penalties to entering interstate compacts and managing statewide education systems. It also explains why local governments focus on land use, services, and other community-level issues: those are the areas in which states have chosen to grant them authority.

Why This Distinction Matters for Citizens and Educators

Grasping the difference between state and local powers is not an academic exercise. It is essential for understanding where to direct advocacy, how to participate in governance, and what to expect from each level of government. A citizen concerned about educational standards should engage with the state legislature, which sets curriculum requirements and funding formulas. A resident worried about a new development in their neighborhood should contact city council, which controls zoning and permitting. Voters who want to change statewide policy can support candidates for the state legislature or, in many states, use the initiative process. Those focused on local issues should engage with mayors and city councilors. This division of labor is the practical expression of federalism, and it shapes the political landscape at every level.

Conclusion

State and local governments fulfill complementary but distinct roles in American governance. State governments hold sovereign powers over legislation, taxation, education, criminal justice, interstate relations, and emergency management — powers that local governments cannot exercise. Local governments, in turn, administer land use, public safety, municipal services, and community development under authority delegated by the state. This arrangement is not arbitrary; it reflects the constitutional principle that states are the primary units of governance within the federal system, while localities are administrative and political subdivisions created to meet community needs. For students, educators, and engaged citizens, understanding this power dynamic is foundational to comprehending how public policy is made, how laws are enforced, and how democracy operates at the most immediate levels. The line between what state governments can do and what local governments cannot is the line that defines the architecture of American federalism.