• Bloomberg released its annual Richest Places index. The Silicon Valley neighborhood of Atherton came out on top for the fourth year in a row.
  • The index ranks the wealthiest communities in the US by average household income, and to crack the list, a neighborhood needs an average household income of $220,000.
  • Elite neighborhoods in coastal states dominated – California and New York City suburbs comprised most of the top 20.
  • Visit Business Insider’s homepage for more stories.

Bloomberg released its annual Richest Places index, revealing the wealthiest towns in the US.

The index ranks the wealthiest communities in the US by average household income. This year, to crack the top 100, a neighborhood needed, at minimum, an average household income upwards of $220,000. The top 20, listed below, each had an average household income over $300,000.

Most of the neighborhoods featured on the list are ritzy suburbs of major cities. Many were coastal – California and the Northeastern states were particularly well represented. Some towns listed are the homes of famous financiers, politicians, and actors; these wealthy residents obviously provide huge boosts to the area’s average income.

Keep reading for a look at richest towns in the US.


20. Great Falls, Virginia

Foto: Great Falls, Virginia. Source: By Jon Bilous / Shutterstock

Average household income: $311,915

Great Falls is just outside of Washington, DC and boasts views of the Potomac River.


19. University Park, Texas

Foto: Southern Methodist University in University Park, Texas. Source: Ken Wolter/Shutterstock

Average household income: $313,255

University Park is a suburb of Dallas. It is home to Southern Methodist University.


18. Palm Beach, Florida

Foto: Source: Getty Images

Average household income: $314,090

Palm Beach is in South Florida and is home to Trump's infamous Mar-a-Lago.


17. The Village of Indian Hill, Ohio

Foto: Source: Checubus/Shutterstock

Average household income: $318,319

The Village of Indian Hill is a suburb of Cincinnati.


16. Old Greenwich, Connecticut

Foto: Tod's Point in Old Greenwich, Connecticut. Source: Sharon Cobo/Shutterstock

Average household income: $321,377

Old Greenwich is a coastal town in Connecticut, an hour outside of New York City. It's known for drawing wealthy Wall Street types.


15. Larchmont, New York

Foto: A Larchmont, New York marina. Source: Jayne Lipkovich/Shutterstock

Average household income: $324,835

Larchmont is a coast-hugging town in well-known Westchester County.


14. Paradise Valley, Arizona

Foto: Paradise Valley, Arizona. Source: Tim Roberts Photography/Shutterstock

Average household income: $328,353

Paradise Valley is right outside of Phoenix. It is known for its luxury golf courses, and it's also the hometown of both Emma Stone and Dick Van Dyke.


13. Bronxville, New York

Foto: Sarah Lawrence College is located in Bronxville, New York. Source: Stephanie Keith/Getty Images

Average household income: $330,421

Bronxville is 15 miles north of New York City, also in Westchester County. It is home to Sarah Lawrence College.


12. Rumson, New Jersey

Foto: The Navesink river in Rumson, New Jersey. Source: Demetri2K/Shutterstock

Average household income: $337,696

Rumson is a waterfront New Jersey town that boasts Jon Bon Jovi as a resident.


11. West University Place, Texas

Foto: Houston, Texas. Source: Duy Do/Getty Images

Average household income: $352,418

West University Place is a suburb of Houston, just southwest of downtown.


10. Darien, Connecticut

Foto: Homes in Darien, Connecticut. Source: barbsimages/Shutterstock

Average household income: $352,839

The leafy town on the Long Island Sound boasts 11 parks and has easy public transport links to Manhattan.


9. Winnetka, Illinois

Foto: The "Home Alone" house in Winnetka, Illinois. Source: Roberto Valz/Shutterstock

Average household income: $353,700

The setting of the much-loved Christmas movie "Home Alone," Winnetka is a suburb of Chicago, just north of the city on Lake Michigan.


8. Glencoe, Illinois

Foto: Chicago, Illinois. Source: Maria Sbytova/Shutterstock

Average household income: $358,543

Glencoe, just north of Winnetka, is another Chicago suburb situated on Lake Michigan. It is 25 miles from the city.


7. Highland Park, Texas

Foto: Dallas, Texas. Source: Shutterstock

Average household income: $365,025

Highland Park is an affluent suburb of Dallas, just four miles north of downtown. It's also the hometown of Claire Underwood, the fictional president of the United States in "House of Cards."


6. Short Hills, New Jersey

Foto: A home in Short Hills, New Jersey. Source: Reuters

Average household income: $388,760

A 45-minute drive to New York City, Short Hills is known for being a commuter town.


5. Los Altos Hills, California

Foto: Los Altos Hills, California. Source: Sundry Photography/Shutterstock

Average household income: $405,073

Los Altos Hills is a Silicon Valley town. Google cofounder Sergey Brin and Google CEO Sundar Pichai both call it home.


4. Cherry Hills Village, Colorado

Foto: Cherry Hills Village, Colorado. Source: Shutterstock

Average household income: $430,681

The Denver suburb is home to famous former Denver Broncos John Elway and Peyton Manning.


3. Hillsborough, California

Foto: Hillsborough, California. Source: yhelfman/Shutterstock

Average household income: $430,681

Hillsborough is a notoriously hilly neighborhood that is only 17 miles from San Francisco.


2. Scarsdale, New York

Foto: A home in Scarsdale, New York. Source: Katie Warren/Business Insider

Average household income: $452,041

Scarsdale is 35 minutes away from New York City, and yet another town on this list that's in Westchester County. Famous residents include Daniel Och, the founder of the hedge fund Och-Ziff Capital Management.


1. Atherton, California

Foto: A home in Atherton, California. Source: Melia Robinson/Business Insider

Average household income: $525,324

Home to tech billionaires such as Facebook's Sheryl Sandberg and Google's Eric Schmidt and just a short drive from Palo Alto and San Francisco, Atherton is richest place in America for the fourth year in a row.