The largest metro areas in America
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More than 20 million people live in the New York metro area, which is more than the population of every state except California, Texas, and Florida. The Metropolitan Statistical Area (MSA) captures how Americans actually live and work, spilling across city limits and county lines and often state borders, and by that measure the country's biggest population centers look different from its biggest cities.
Here are the twelve largest metropolitan areas in the United States, by the Census Bureau's 2025 population estimates.
| Rank | Metro area | Population |
|---|---|---|
| 1 | New York, NY-NJ | 20,112,448 |
| 2 | Los Angeles, CA | 12,844,441 |
| 3 | Chicago, IL-IN | 9,434,123 |
| 4 | Dallas, TX | 8,477,157 |
| 5 | Houston, TX | 7,904,627 |
| 6 | Atlanta, GA | 6,482,182 |
| 7 | Washington, DC-VA-MD-WV | 6,465,724 |
| 8 | Miami, FL | 6,391,072 |
| 9 | Philadelphia, PA-NJ-DE-MD | 6,329,118 |
| 10 | Phoenix, AZ | 5,228,938 |
| 11 | Boston, MA-NH | 5,034,221 |
| 12 | Riverside, CA | 4,769,007 |
Why the list reshuffles the cities
By city population Dallas doesn't crack the top eight, but its metro is the fourth largest in the country, because the region is a web of large suburbs like Fort Worth, Arlington, and Plano rather than one dominant core. Atlanta is the extreme version: the city of Atlanta has about 529,000 people with very small city limits of 136 square miles, but its metro holds nearly 6.5 million, so more than 90 percent of "Atlanta" lives outside the city itself.
Some of these metros cross state lines, which the labels show. New York's MSA reaches into New Jersey, Washington's touches four jurisdictions, and Philadelphia's spans four states. A metro area is defined by commuting patterns, so it follows where people drive to work, not where the state map says one place ends and another begins.
What a metro area actually is
The Census Bureau builds metros, formally metropolitan statistical areas, from whole counties. It starts with an urban core of at least 50,000 people, then adds every surrounding county tied to that core by commuting. That's why the population counts everyone in the orbit of a city, not just those inside its limits, and why the metro number is usually the honest answer to "how big is this place."
The gap between a city and its metro is a rough map of how spread out a region is. A city that nearly equals its metro is compact; one that's a small fraction of it, like Atlanta or Miami, is a sprawling region with no single dominant municipality. For the city-limits version of this ranking, see the largest city in every state, and the full ranked list of every metro is at largest metro areas by population.
Sources
Population figures are the U.S. Census Bureau Vintage 2025 population estimates for metropolitan statistical areas, defined by the Office of Management and Budget delineations. Metro areas are built from whole counties tied to an urban core by commuting.
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What is the largest metropolitan area in the United States?
The New York metropolitan area is the largest, with about 20.1 million people spread across New York and New Jersey. Los Angeles is second at roughly 12.8 million and Chicago third at about 9.4 million, based on the Census Bureau's Vintage 2025 estimates.
What is the difference between a city and a metro area?
A city is a single incorporated municipality with fixed limits. A metropolitan area is built from whole counties tied to an urban core of at least 50,000 people by commuting patterns, so it captures the suburbs and surrounding region. That is why Atlanta's city has about 529,000 people but its metro holds nearly 6.5 million.
Why does Dallas rank higher as a metro than as a city?
The Dallas region is a network of large suburbs like Fort Worth, Arlington, and Plano rather than one dominant core city, so its metro is the fourth largest in the country even though the city of Dallas alone does not rank in the top eight. Metro rankings reward regions that spread population across many municipalities.
