Richest Counties in the U.S. (2025)

August 23, 2025 by Georges Benoliel

The United States is home to some of the wealthiest places to live in the world. The richest counties in the U.S. are located in desirable areas that feature strong economies, high-paying jobs, and access to excellent amenities. Although the cost of living in these counties can be high, many people find that the quality of life justifies the expense. In this article, we will review the 21 richest counties in the United States and explore what makes them appealing to those seeking a life of comfort and luxury.

Key Findings

Loudoun County in Virginia is recognized as the richest county in the United States, with a median household income of $156,821. The average home value in Loudoun County is $722,547, which is 76% higher than the national average.

The second-wealthiest county in the U.S. is Falls Church, Virginia. It has a median household income of $155,071 and an average home value of $691,521.

Santa Clara County in California ranks as the third richest county in the U.S. It features some of the highest home prices in the nation, with a median home value of $1.4 million and a median household income of $140,258.

1. Loudoun County, Virginia: $156,821 Median Household Income. Richest County in the U.S.

Loudoun County, Virginia, is the wealthiest county in the United States. It has a median household income of $156,821 and an average home value of $722,547. The county’s picturesque landscapes, affluent neighborhoods, and proximity to Washington, D.C., make it a desirable location for high-income earners.

Loudoun is home to several major corporations, including AOL, Orbital Sciences, and Sequestrum. Additionally, the area is recognized for its excellent schools and high quality of life. Cities such as Ashburn and Leesburg feature some of the most impressive homes in the region. However, both the cost of living and quality of life are notably high in this ultra-affluent U.S. county.

2. Falls Church, Virginia: $155,071 Median Household Income

Falls Church, Virginia, is a city with county-level governance, making it fully independent from the surrounding Arlington and Fairfax Counties, even though it is not technically a county itself. The city boasts the second-highest median household income in the nation at $155,071, and the average home value is $691,521.

Located close to Arlington, Alexandria, and Washington, D.C., Falls Church is home to numerous government agencies and contractors. Known for its excellent schools and peaceful neighborhoods, Falls Church offers families and professionals a tranquil yet affluent lifestyle.

3. Santa Clara County, California: $140,258 Median Household Income

Santa Clara County is the wealthiest county in California and the third-wealthiest in the United States, with a median household income of $140,258 and a median home value exceeding $1.4 million. Located in the heart of Silicon Valley, Santa Clara County is famous for its technological innovation and affluence.

The county is home to several of the richest cities in California, including Los Altos Hills and Cupertino. It features a strong job market, excellent schools, and a high quality of life. In addition to its thriving tech scene, Santa Clara County offers attractions such as the beautiful vineyards of the Santa Clara Valley Wine Trail and the iconic Winchester Mystery House.

4. San Mateo County, California: $136,837 Median Household Income

San Mateo County, California, ranks as the fourth-wealthiest county in the United States, with a median household income of $136,837 and an average home value exceeding $1.5 million.

This county is home to several major tech companies, including Oracle and YouTube, and is notable for housing the richest city in the US, Atherton.

With its picturesque coastal areas, such as the town of Half Moon Bay, excellent school systems, and affluent communities like Atherton and Hillsborough, it’s no surprise that San Mateo County consistently ranks among the wealthiest counties in the nation.

5. Fairfax County, Virginia: $133,974 Median Household Income

Just a stone’s throw from the nation’s capital, Fairfax County is a vibrant hub of economic activity. It is the fifth-richest county in the United States, boasting a median household income of $133,974 and an average home value of $697,057. Fairfax County is home to several major corporations, including Boeing, Northrop Grumman, and General Dynamics. Some of the wealthiest cities in Virginia, such as Great Falls, McLean, and Wolf Trap, are located within this county.

The county is also renowned for its excellent schools and high quality of life. With a diverse population and a wide range of amenities, Fairfax County is a prime destination for those seeking a balanced lifestyle that harmonizes work and leisure.

6. Marin County, California: $131,008 Median Household Income

Marin County is located in the northern part of the San Francisco Bay Area and is the sixth-wealthiest county in the United States, with a median household income of $131,008. Known for its natural beauty, Marin County features rugged coastlines and lush forests. The county offers a relaxed yet sophisticated lifestyle, with a strong emphasis on outdoor activities and eco-friendly living.

The average home value is just over $1.4 million. Some of the wealthiest cities in Marin County include Tiburon, Sausalito, and Mill Valley. Residents enjoy stunning views of San Francisco Bay and Alcatraz Island, along with access to art galleries, seafood restaurants, and upscale shopping.

7. Howard County, Maryland: $129,549 Median Household Income

Howard County, located between Baltimore and Washington, D.C., is the wealthiest county in Maryland. With a median household income of $129,549 and an average home value of $586,155, it ranks as the seventh-wealthiest county in the United States. The county is renowned for its highly rated public schools, making it one of the best places to raise a family in Maryland.

Additionally, Howard County is home to many large businesses and government agencies, including the National Security Agency and the Johns Hopkins Applied Physics Laboratory. Some of the wealthiest communities in the county include Columbia, Ellicott City, and Clarksville.

8. Arlington County, Virginia: $128,145 Median Household Income

Arlington County, situated just across the Potomac River from Washington, D.C., is a highly sought-after destination for government professionals and corporate executives. Its urban environment and strong job market make it an attractive choice for high-income earners and young professionals.

Ranking as the eighth-richest county in the United States, Arlington has a median household income of $128,145 and an average home value of $758,859. The county is also recognized for its excellent schools and high quality of life. Among the wealthiest neighborhoods in Arlington County are Rosslyn and Clarendon.

9. Douglas County, Colorado: $127,443 Median Household Income

Douglas County, Colorado, is a region that blends stunning natural beauty with economic prosperity. It ranks as the ninth-richest county in America, boasting a median household income of $127,443 and an average home value of $708,993. The county is renowned for its picturesque landscapes, mild climate, and high quality of life.

Notable cities include Castle Rock, Parker, and Highlands Ranch, all of which are celebrated for their excellent schools, parks, shopping opportunities, and proximity to Denver. Additionally, Castle Pines and Lone Tree offer luxurious living options, featuring expansive estates and easy access to outdoor recreational activities.

10. Nassau County, New York: $126,576 Median Household Income

Nassau County, located on Long Island’s North Shore, is famous for its affluence. Prestigious neighborhoods such as Great Neck and Manhasset feature elegant homes, beautiful beaches, top-rated schools, and convenient access to New York City.

It ranks as the tenth-richest county in the United States, with a median household income of $126,576 and an average home value of $710,430. Some of the wealthiest communities in Nassau County include Glen Cove, Oyster Bay, and Sands Point, all of which are home to many exquisite waterfront properties.

11. San Francisco County, California: $126,187 Median Household Income

San Francisco, often referred to as “The City by the Bay,” is located in San Francisco County, California. This county is a cultural and economic hub, known for its diverse population, iconic landmarks such as the Golden Gate Bridge, and a thriving arts scene.

The median home price in San Francisco is approximately $1.3 million, while the median household income stands at $126,187, making it one of the wealthiest counties in the United States. Some of the most affluent neighborhoods in San Francisco County include Pacific Heights, Presidio Heights, and Sea Cliff, all of which are recognized for their excellent schools and stunning views.

12. Morris County, New Jersey: $123,727 Median Household Income

Morris County, the richest county in New Jersey, ranks number 12 on our list of the wealthiest counties in the United States. It boasts a median household income of $123,727 and an average home value of $605,993.

Known for its affluent suburbs, excellent schools, and scenic countryside, Morris County features notable towns like Chatham, which is celebrated for its rich history, tree-lined streets, and upscale shopping options.

The county offers easy access to New York City, providing residents with numerous job opportunities. Additionally, a variety of diverse dining and cultural venues cater to a wide range of tastes. Popular attractions in Morris County include Morristown National Historical Park, Great Swamp National Wildlife Refuge, and the Frelinghuysen Morris Arboretum.

13. Los Alamos County, New Mexico: $123,677 Median Household Income

Los Alamos County in New Mexico offers a unique combination of scientific innovation and natural beauty. It is home to the Los Alamos National Laboratory, which draws a highly educated workforce. The median household income in the county is $123,677, and the average home value in Los Alamos is $510,676.

The wealthiest city in the county is Los Alamos itself. Residents enjoy various attractions, including the Bradbury Science Museum, Bandelier National Monument, and the Los Alamos Neutron Science Center.

14. Hunterdon County, New Jersey: $123,373 Median Household Income

Hunterdon County ranks 14th on our list of the richest counties in the U.S. It has a median household income of $123,373 and an average home value of $552,490. The job market is robust, with many residents commuting to nearby New York City or Philadelphia. Hunterdon County features a low crime rate and excellent schools.

Its charming villages, rolling farmlands, and vibrant equestrian culture make it an ideal choice for those seeking a peaceful yet prosperous lifestyle. Notable attractions in Hunterdon County include the Round Valley Reservoir and the Hunterdon Art Museum.

15. Somerset County, New Jersey: $121,695 Median Household Income

Somerset County, located in central New Jersey, ranks 15th on our list, with a median household income of $121,695 and an average home value of $580,058. The county is approximately 45 minutes away from both New York City and Philadelphia.

Known for its affluent suburbs, Somerset County offers excellent schools, well-maintained parks, golf courses, and country clubs, creating a refined yet family-friendly environment. The strong job market and high-quality healthcare facilities further enhance its appeal. Bernardsville, in particular, is noted for its grand estates and prestigious atmosphere.

Outdoor enthusiasts can enjoy leisure activities and sightseeing at the Delaware and Raritan Canal State Park and the Sourland Mountain Preserve.

16. Forsyth County, Georgia: $120,999 Median Household Income

Forsyth County boasts a median household income of approximately $120,999 and an average home value of $585,677, making it the wealthiest county in Georgia and the 16th richest in the United States. The county is famous for its excellent schools, safe neighborhoods, and affluent residents.

Although the cost of living is higher than the state average, the job market is strong, and numerous amenities are available. Residents can enjoy activities such as visiting the Lake Lanier Islands, hiking in the Chattahoochee National Forest, and exploring the Alpharetta Arts Center, making Forsyth County a paradise for outdoor and cultural enthusiasts.

17. Calvert County, Maryland: $120,295 Median Household Income

Calvert County, Maryland, ranks 17th on our list of the wealthiest counties in the USA, with a median household income of $120,295. Located on the Chesapeake Bay, the county boasts many beautiful waterfront properties and a low crime rate. The average home value in Calvert County is $450,461.

Residents enjoy a blend of recreational activities and a relaxed coastal lifestyle. Some of the most sought-after cities in the county include Solomons and Chesapeake Beach. Additionally, Calvert County is home to numerous historical and cultural attractions, as well as parks like Calvert Cliffs State Park and Point Lookout State Park.

18. Stafford County, Virginia: $119,818 Median Household Income

Number 18 on our list of the wealthiest counties in the country is Stafford County, Virginia. The median household income is just under $120,000, while the average home value exceeds $500,000. Centrally located between Washington, D.C., and Richmond, Virginia, Stafford County is an excellent place for young professionals and families seeking a vibrant community.

Residents can enjoy various activities, such as visiting the Stafford Historical Society Museum and exploring the nearby Prince William Forest Park. With its mix of historical sites, modern amenities, and economic opportunities, Stafford County is a highly desirable place to call home.

19. Montgomery County, Maryland: $117,345 Median Household Income

Montgomery County is a diverse and thriving region that borders Washington, D.C., with a median household income of $117,345. The area offers numerous job opportunities across various sectors. Bethesda and Potomac are particularly known for their luxurious homes and affluent residents.

The average home value in Montgomery County is $594,302. This region is ideal for families, featuring highly rated public schools, low crime rates, and a vibrant arts and culture scene. Notable attractions include the Smithsonian National Zoo and the Strathmore Music Center. Montgomery County ranks as the 19th richest county in the United States.

20. Nantucket County, Massachusetts: $116,571 Median Household Income

Nantucket County is famous for its idyllic beaches and charming New England architecture, making it a haven for those seeking a luxurious coastal lifestyle. The island’s exclusivity and natural beauty contribute to its appeal as a desirable place to live.

To emphasize its exclusivity, the average home value in Nantucket exceeds $2.6 million, which is 318% higher than the national average. As a result, both the cost of living and the quality of life in this area are very high. Nantucket County offers numerous attractions, including the Nantucket Whaling Museum, Cisco Brewers, the Nantucket Shipwreck & Lifesaving Museum, and many beautiful lighthouses.

21. Delaware County, Ohio: $116,284 Median Household Income

Capping off our list of the wealthiest counties in the USA is Delaware County, Ohio. This county boasts a median household income of $116,284 and an average home value of $471,836. Located in central Ohio, north of Columbus, Delaware County combines rural charm with suburban convenience.

Affluent communities, such as Powell, Delaware, and Dublin, are famous for their excellent schools, well-maintained neighborhoods, and robust job markets.

Residents can enjoy attractions like the Columbus Zoo and Aquarium, as well as the Delaware County Historical Society Museum. Additionally, Alum Creek State Park offers great opportunities for fishing, camping, and hiking.

Richest Counties in the US Bottom Line

These 21 affluent counties offer a wide range of amenities and attractions. They are home to some of the best schools in the country, high-paying jobs, and numerous cultural and recreational activities. However, the high quality of life in these areas comes with a steep price tag, as the cost of living can be exceptionally high.

Whether it’s a tech hub like Silicon Valley or a coastal paradise like Nantucket, these counties provide a glimpse into the lifestyles of the wealthy and successful, making them highly sought-after places to live.

If you are interested in learning about the wealthiest locations across the nation, be sure to check out our article on the richest cities in the USA.

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