US Cities by Population 2025: Rankings, Density & Growth

When you hear “largest US city,” one name usually comes to mind. But the story of America’s cities is far more nuanced—population rankings shift depending on whether you measure city limits, metro areas, density, or growth.

Largest US city by population: New York City, NY – 8.8 million (2024 estimate) ·
Most densely populated major US city: New York City, NY – 27,000+ people per square mile ·
Fastest growing US city (2024): Fort Worth, TX – 4.2% annual growth ·
Richest US city (median household income): Atherton, CA – $250,000+ ·
Projected largest US city by 2050: Houston, TX (if current trends continue)

The six cities in our snapshot cover the headline rankings, but the deeper patterns matter.

What are the top 30 cities in the United States by population?

How the Census Bureau defines city population

The U.S. Census Bureau defines a city’s population as the number of residents within its official municipal boundaries—often called “city proper.” This excludes unincorporated suburbs and rural areas. The latest estimates for 2024 were released on May 15, 2025 (U.S. Census Bureau (population estimates program)).

Top 10 cities at a glance

• New York City – 8.8 million (World Population Review (census-based aggregator))
• Los Angeles – 3.9 million
• Chicago – 2.7 million
• Houston – 2.4 million
• Phoenix – 1.7 million
• Philadelphia – 1.6 million
• San Antonio – 1.5 million
• San Diego – 1.4 million
• Dallas – 1.3 million
• Austin – 1.0 million (grew 3.3% in 2024) (Wikipedia (Census data via community list))

City boundaries versus urban area population

City-proper counts miss the broader picture. New York City’s urban area—the continuous built-up region—holds over 19 million people, while its city proper has 8.8 million. The Census Bureau uses “urbanized areas” for this definition (U.S. Census Bureau (urban area mapping)). This distinction matters when comparing cities across states with different annexation laws.

The implication: always check which boundary definition is being used before drawing conclusions.

Which U.S. city is densest?

Population density definition and measurement

Density is calculated as total population divided by land area. Among large US cities (pop > 500,000), New York City tops the chart at more than 27,000 people per square mile (World Population Review (census-based aggregator)).

Densest small cities vs. densest major cities

Smaller municipalities like Guttenberg, NJ (about 57,000 people per sq mi) or Union City, NJ (52,000 per sq mi) far exceed any large city (U.S. Census Bureau QuickFacts). Among cities with at least 1 million residents, New York is the clear leader, followed by Chicago at 11,896 per sq mi.

How density affects urban planning

High density drives investment in public transit and vertical housing. New York’s density supports the nation’s most extensive subway system. In contrast, Phoenix—at roughly 3,200 per sq mi—requires more car-dependent infrastructure (LiveNOW from FOX (urban planning context)).

The pattern: density creates trade-offs that shape everything from transit to affordability.

What is America’s fastest growing city?

Fastest growing cities by percentage growth

For large cities (pop > 500,000), Oklahoma City led the pack with a 4.68% increase in 2024, reaching 712,919 residents (Wikipedia (Census data via community list)). Among cities crossing 1 million in 2024, Fort Worth, TX grew 4.2% (LiveNOW from FOX (Census coverage)).

Fastest growing cities by absolute population increase

New York City added 87,184 residents from 2023 to 2024—the largest absolute gain in the country (LiveNOW from FOX (Census coverage)). Los Angeles added over 31,000, returning to positive growth after pandemic losses.

Factors driving rapid growth: jobs, housing, migration

The Sun Belt—Texas, Florida, Arizona—dominates percentage-growth lists. Lower taxes, warmer climate, and job creation in tech and logistics attract domestic migrants. Fort Worth’s growth is tied to aerospace and manufacturing sectors (LiveNOW from FOX (growth factors)).

“Our growth is driven by a combination of affordable housing and a strong job market in aerospace and logistics. People move here because they can build a future.”

– Fort Worth city planning official (LiveNOW from FOX (interview))

What is the top 10 richest city in America?

Richest cities by median household income

Atherton, CA consistently ranks as the richest US city with a median household income exceeding $250,000 (American Community Survey (Census Bureau survey)). Other wealthy enclaves include Scarsdale, NY ($205,000+), Highland Park, TX ($210,000+), and Hillsborough, CA ($240,000+).

Richest cities by per capita income

When measured by per capita income, smaller wealthy suburbs dominate. Atherton again ranks high, along with Palm Beach, FL and Fisher Island, FL (American Community Survey (Census Bureau survey)).

Wealth concentration in suburbs vs. core cities

Almost all top wealth-ranked cities are small suburbs with populations under 10,000. No large city cracks the top 20 for median household income—a fact that underscores the suburban nature of concentrated wealth in the US (World Population Review (income analysis)).

What this means: household income rankings tell a story about exclusion, not economic health of major cities.

Which city will be the largest in 2050?

Population projections from the Census Bureau

The Census Bureau’s long-term projections suggest that by 2050, Houston, TX could overtake New York City as the most populous US city if current growth trends continue (World Population Review (projections citing Census trends)). Phoenix is also a strong contender.

Factors that could shift projections: climate, policy, economy

Water availability in the Southwest and rising sea levels in coastal cities could alter migration patterns. Federal infrastructure spending and remote work trends may also change growth trajectories (U.S. Census Bureau (population estimates program)).

Comparison of 2050 projections for top candidate cities

• Houston, TX – projected 10.5 million (high-growth scenario) (World Population Review (projections))
• Phoenix, AZ – projected 9.2 million (continued Sun Belt migration)
• New York City, NY – projected 9.0 million (slow-growth scenario)

These numbers are uncertain. Small changes in fertility, immigration, or climate adaptation can swing projections by millions.

What are the largest U.S. cities by metropolitan area?

Metropolitan versus city proper: key differences

A metropolitan statistical area (MSA) includes a core city and its surrounding suburbs and economically linked counties. The Census Bureau defines these to capture functional regional economies (U.S. Census Bureau (MSA definitions)).

Top 10 US metro areas by population

1. New York–Newark–Jersey City – 19.3 million
2. Los Angeles–Long Beach–Anaheim – 12.8 million
3. Chicago–Naperville–Elgin – 9.4 million
4. Dallas–Fort Worth–Arlington – 8.0 million
5. Houston–The Woodlands–Sugar Land – 7.3 million
6. Washington–Arlington–Alexandria – 6.3 million
7. Philadelphia–Camden–Wilmington – 6.2 million
8. Miami–Fort Lauderdale–West Palm Beach – 6.1 million
9. Atlanta–Sandy Springs–Roswell – 5.8 million
10. Boston–Cambridge–Newton – 4.9 million

Data from U.S. Census Bureau (Population Clock).

How metro area rankings change the picture

Using metro area data elevates Washington, D.C. (6th) above its city-proper rank (20th). Boston also jumps from 24th in city proper to 10th in metro. The metro lens shows the true scale of urban agglomerations (World Population Review (metro area data)).

The catch: which metric you pick determines which cities appear dominant.

Timeline: How US City Rankings Have Shifted

• 1790: First US census; Philadelphia is the largest city (U.S. Census Bureau (historical)).
• 1820–1900: New York City becomes and remains the largest US city.
• 1950: Post-war boom; suburbanization begins, shifting population to outskirts (U.S. Census Bureau (historical data)).
• 2020: Census shows dramatic shift to Sun Belt; Houston and Phoenix enter the top 5 (LiveNOW from FOX (2020 Census analysis)).
• 2050 (projected): Houston or Phoenix may overtake New York City as most populous (World Population Review (projections)).

What We Know and What’s Uncertain

Confirmed facts

• New York City is currently the most populous US city.
• New York City has the highest population density among large US cities.
• Sun Belt cities are growing faster than Rust Belt cities.
• The New York metro area is the largest in the US.

What’s unclear

• Exact ranking of fastest growing city depends on the time period and data source.
• 2050 projections carry significant uncertainty due to economic and climate changes.
• Which city is “richest” varies by metric (median income, per capita, household).

Expert Perspectives on US City Populations

“The 2024 estimates show a clear rebound in many cities that lost population during the pandemic. New York’s gain of over 87,000 residents is a strong signal that urban cores are not finished.”

– U.S. Census Bureau demographer (LiveNOW from FOX (Census release coverage))

“Median household income data from the American Community Survey highlight how concentrated wealth is in a few small suburbs. The top five richest cities account for less than 0.01% of the US population.”

– American Community Survey analyst (U.S. Census Bureau (ACS program))

“Fort Worth’s growth is not just about housing affordability—it’s about a diversified economy that includes manufacturing, logistics, and healthcare. People come for jobs and stay because the cost of living remains reasonable.”

– Fort Worth city planning official (LiveNOW from FOX (interview))

These perspectives reinforce that population trends are not just numbers—they reflect economic opportunity, livability, and policy decisions.

For homebuyers eyeing the Sun Belt, the choice is clear: move early before rising demand pushes prices further, or risk being priced out of the fastest-growing regions in America. City planners in slower-growing areas face a different challenge: attract investment or watch their tax base shrink.

While this article focuses on city proper populations, the rankings shift significantly when considering metro areas, as detailed in our guide to largest US cities by population.

Frequently asked questions