What Does “Commonwealth” Actually Mean?
At first glance, the word “commonwealth” might sound like something lifted from a medieval scroll or a dusty civics textbook. But in the case of Kentucky—and three of its fellow states—it’s more than just a fancy label. The term “commonwealth” traces its roots to 15th-century English political philosophy and was later popularized during the English Civil War (1642–1651), a period when England briefly abolished the monarchy and declared itself a republic under Oliver Cromwell. From 1649 to 1660, the “Commonwealth of England” stood as a radical experiment in representative governance, emphasizing the sovereignty of the people over royal authority.

In this context, “commonwealth” literally means “common weal” or “common good”—a term closely aligned with the Latin phrase res publica, the same root from which we get “republic”. When American colonists sought to break free from monarchic rule in the 18th century, the word carried powerful anti-royalist symbolism. States like Virginia and Massachusetts embraced it to signal their allegiance not to a crown, but to a collective, democratic ideal. Pennsylvania followed suit in 1776, and Kentucky—though not one of the original colonies—later adopted the term to reflect its philosophical lineage.
Today, the distinction is purely symbolic. Legally, there’s no difference between a state and a commonwealth within the U.S. constitutional framework. That said, the term still has some ceremonial flair. In Kentucky, for instance, criminal cases are prosecuted in the name of “the Commonwealth,” not the state—an echo of its historical emphasis on public welfare and civic unity. So while it may not change how Kentucky governs, the word “commonwealth” still carries the weight of centuries of political thought—and a not-so-subtle nod to the idea that government should serve everyone, not just the elite.
The Historical Roots of Kentucky’s Unique Title
Kentucky’s identity as a “commonwealth” may sound like a ceremonial flourish, but it’s actually a historical echo—one that reaches back across the Atlantic to the political upheaval of 17th-century England. The term “commonwealth” first gained prominence during the English Civil War, when, in 1649, the monarchy was abolished and England briefly rebranded itself as a republic under Oliver Cromwell’s leadership. During this interregnum, the word “commonwealth” symbolized a government grounded in the sovereignty of the people and the collective good—what they called the “common weal.” Though the monarchy was restored in 1660, the term stuck around and found new life across the ocean.
Fast forward to the American Revolution, and that same anti-monarchial spirit resurfaced. Virginia, one of the original thirteen colonies, embraced the term “commonwealth” in its 1776 constitution to emphasize its break from royal authority and its commitment to self-rule. Pennsylvania followed suit later that same year, and Massachusetts joined in 1780, using the term to underscore its democratic leanings.
Kentucky’s turn came in 1792, when it separated from Virginia and became the fifteenth state. Though it wasn’t one of the original colonies, its political DNA was unmistakably Virginian. Kentucky inherited not just Virginia’s land laws and legal traditions, but also its symbolic language. While the early Kentucky constitutions used “state” and “commonwealth” interchangeably, the 1891 constitution formally cemented the latter as its official designation.
As Professor Tom Appleton of Eastern Kentucky University notes, the title wasn’t about legal distinctions—it was about heritage and ideals. By adopting “commonwealth,” Kentucky aligned itself with a legacy of people-first governance and revolutionary values. And yet, for all its historical gravitas, the term remains largely symbolic. In the eyes of federal law, a commonwealth and a state are one and the same. But in terms of identity? For Kentucky, it’s a nod to where it came from—and what it chose to remember.
How Virginia’s Influence Shaped Kentucky’s Status
Kentucky didn’t just spring into statehood with a quirky fondness for the word “commonwealth.” Its identity, language, and even legal DNA were deeply entwined with Virginia’s—its parent state, both politically and philosophically. Before Kentucky joined the Union as the 15th state in 1792, it was known as Virginia’s western territory, geographically divided by the Appalachian Mountains but governed under Virginia’s jurisdiction. For nearly a decade prior, starting in 1784, settlers in the region had pushed for separation, citing the challenges of distant governance and a growing population that demanded more localized control. Still, Virginia didn’t just let go. It placed conditions on Kentucky’s independence, including financial settlements and land claims, before finally consenting to statehood on December 18, 1789—a decision Congress ratified on February 4, 1791.

But here’s where the story gets more ideological. Virginia had adopted the term “commonwealth” during the English Civil War, invoking the anti-monarchic ideals of Oliver Cromwell’s 1649 regime. “Commonwealth” wasn’t just a label—it was a philosophical stance, signaling governance by the people and for the public good. Kentucky, steeped in this legacy, carried forward that tradition. Its early legal framework borrowed heavily not only from Virginia but also from Pennsylvania—another commonwealth—when it drafted its first constitution in 1792. While “State of Kentucky” appeared in early documents, it wasn’t until the 1891 constitution that “Commonwealth of Kentucky” became official, cementing the symbolic inheritance from Virginia.
So, why didn’t West Virginia—also carved from Virginia—follow suit? That’s a whole different story. But for Kentucky, the use of “commonwealth” wasn’t a random flourish. It was a deliberate extension of Virginia’s political ethos, carried westward across the mountains and etched into its constitutional identity.
The Legal Difference (or Lack Thereof) Between a State and a Commonwealth
So, let’s clear up the confusion right away—calling Kentucky a “commonwealth” doesn’t give it any extra legal powers, secret privileges, or a mystical handshake with the federal government. Legally speaking, there is no difference whatsoever between a U.S. state and a U.S. commonwealth when it comes to constitutional authority, federal representation, or governance structure. Kentucky, along with Massachusetts, Pennsylvania, and Virginia, uses the term as a nod to history and philosophy—not a separate legal status. According to the Library of Congress, the term “commonwealth” was chosen to emphasize a government formed for the common good, rooted in the Latin res publica—the public thing or public affair.
This symbolic title doesn’t change how Kentucky functions within the Union. It sends two senators to Washington like every other state. It collects taxes, elects a governor, and plays by the same constitutional rules. As clarified by both Merriam-Webster and historical analysis from Perplexity AI, the “commonwealth” label is stylistic—think of it as a poetic flourish rather than a legal clause. And get this—when Kentucky officially adopted the term in its 1891 constitution, it was following in the footsteps of Pennsylvania and Virginia, not carving out a separate category of statehood.
That said, the term does carry some political weight outside the fifty states. U.S. territories like Puerto Rico and the Northern Mariana Islands are also called commonwealths—but unlike Kentucky, they aren’t full-fledged states. They lack voting representation in Congress and don’t pay federal income taxes, which sets them apart in very real legal ways. So while “commonwealth” may sound regal or unique, in Kentucky’s case, it’s more about tradition than transformation.
Other U.S. Commonwealths and Their Shared History
The term “commonwealth” may sound like a quaint relic of colonial times, but in the United States, it’s still alive in the official names of four states: Kentucky, Massachusetts, Pennsylvania, and Virginia. While the word carries no legal distinction from “state,” its use is deeply rooted in revolutionary ideals and symbolic gestures of self-governance. What unites these four is not just a shared label, but a philosophical lineage tied to the political upheavals of the 17th and 18th centuries—and a desire to break with monarchical traditions.
Virginia was the first to adopt the term in 1776, drawing inspiration from the English Civil War and the short-lived Commonwealth of England under Oliver Cromwell. The choice emphasized popular sovereignty over royal authority—a radical idea at the time. Pennsylvania followed suit later that same year, codifying the title into its constitution to signal a government committed to the “common good”. Massachusetts joined in 1780, using “commonwealth” as a deliberate rejection of monarchy while crafting one of the nation’s oldest functioning constitutions. Kentucky, though not one of the original thirteen colonies, inherited the term from its parent state, Virginia, when it gained statehood in 1792. It later cemented the designation in its 1891 constitution.
Interestingly, the term extends beyond these four states. Two U.S. territories—Puerto Rico and the Northern Mariana Islands—are also officially designated as commonwealths. But unlike the states, their status reflects a unique political arrangement: they are self-governing but lack voting representation in Congress, and their residents, while U.S. citizens, don’t pay federal income tax. Their use of “commonwealth” stems more from negotiated political autonomy than from revolutionary heritage.
So while the word “commonwealth” might seem like a semantic flourish today, it’s actually a linguistic time capsule—one that reveals the ideological priorities of fledgling governments seeking to define themselves not just by borders, but by values. And in that sense, these commonwealths are united by more than just a name—they’re bound by a shared vision of governance rooted in the welfare of the people.
Why Kentucky Chose to Keep the “Commonwealth” Name
Kentucky’s use of the term “commonwealth” might sound like a quirky branding choice—or a remnant of colonial pomp—but its roots stretch deep into political philosophy, constitutional lineage, and a deliberate nod to its parent state, Virginia. When Kentucky officially became the 15th state of the Union on June 1, 1792, it did so as a former frontier district of Virginia, a state that had proudly adopted the “commonwealth” title during the revolutionary fervor of 1776 to signal a government based on the sovereignty of the people rather than the authority of a monarch. That legacy didn’t just influence Kentucky’s borders—it shaped its very identity.
At first glance, Kentucky’s early statehood documents referred to it simply as a “state.” But as the political culture matured, so did its symbolic language. By the time Kentucky adopted its fourth and current constitution in 1891, the term “Commonwealth of Kentucky” had been enshrined in the preamble, affirming a philosophical alignment with ideals rooted in republican self-governance and civic virtue. This wasn’t mere semantics—it was a conscious affirmation of the belief that government should serve the common weal, or common good, a concept that had resonated since the days of Cromwell’s England and the American Revolution alike.
Interestingly, Kentucky’s constitutional model drew heavily from Pennsylvania’s 1776 constitution—another state that chose the “commonwealth” label to emphasize collective welfare over centralized power. This philosophical kinship wasn’t accidental. As Professor Tom Appleton of Eastern Kentucky University explains, the term “commonwealth” carried anti-monarchical overtones that appealed to post-colonial Americans wary of tyranny.
So why did Kentucky keep the name? Not because it had to, and certainly not for legal distinction—there is none between a state and a commonwealth in the U.S. system. Instead, Kentucky chose continuity over reinvention, embracing the symbolic inheritance of Virginia and the broader revolutionary ethos that privileged public welfare, civic responsibility, and popular sovereignty. In doing so, it ensured that “commonwealth” would remain more than a ceremonial flourish—it would serve as a lasting emblem of the state’s democratic ideals.
How the Title Continues to Spark Curiosity Today
Kentucky’s decision to call itself a “commonwealth” instead of a “state” might seem like a quaint semantic quirk—until you realize how often it still stops people in their tracks. Whether it’s a tourist reading the welcome sign or a student stumbling across the term in a civics textbook, the question inevitably follows: what exactly makes Kentucky a commonwealth? The answer, though well-trodden by historians, continues to fascinate a broad audience, largely because the term carries a weight of symbolic meaning far beyond its legal insignificance.
Part of the intrigue lies in Kentucky’s unique backstory. Unlike Massachusetts or Pennsylvania—both original colonies—Kentucky wasn’t even a state until 1792, when it broke off from Virginia, itself a self-declared commonwealth since the Revolutionary era. As noted by Professor Tom Appleton of Eastern Kentucky University, this title was a philosophical inheritance from Virginia’s post-monarchist ideals, shaped by the English Commonwealth period under Oliver Cromwell. That legacy still echoes today, especially in Kentucky’s 1891 constitution, where the term “commonwealth” was formally enshrined.
And yet, it’s not just historians who care. The term “commonwealth” crops up in everything from gubernatorial speeches to courtroom documents, where it carries a certain gravitas. It’s also a staple in Kentucky classrooms, where students learn not just geography, but the ideological roots of their state’s identity. Online, the fascination endures—Google searches like “Why is Kentucky a commonwealth?” remain perennially popular, and Reddit threads brim with curious outsiders trying to make sense of it all.
So why does it still matter? Because in an era where state lines are mostly administrative, Kentucky’s use of “commonwealth” reminds us that names carry stories—stories of rebellion, self-rule, and a belief that government exists for the common good. That idea, baked into the very name, continues to resonate far beyond the bluegrass borders.