Key Findings
- Loudoun County in Virginia is the richest county in the US, having a median household income of $156,821. Home values in Loudon county average $722,547, which is 76% higher than the national average.
- The second wealthiest county in the USA is Falls Church, Virginia, which boasts a median household income of $155,071 and an average home value of $691,521.
- Santa Clara County in California is the third richest county in the US. It has some of the most expensive home prices in the nation with a median home value of $1.4 Million. The median household income is also very high at $140,258.
21 Richest Counties in the USA
- Loudoun County, Virginia
- Falls Church, Virginia
- Santa Clara County, California
- San Mateo County, California
- Fairfax County, Virginia
- Marin County, California
- Howard County, Maryland
- Arlington County, Virginia
- Douglas County, Colorado
- Nassau County, New York
- San Francisco County, California
- Morris County, New Jersey
- Los Alamos County, New Mexico
- Hunterdon County, New Jersey
- Somerset County, New Jersey
- Forsyth County, Georgia
- Calvert County, Maryland
- Stafford County, Virginia
- Montgomery County, Maryland
- Nantucket County, Massachusetts
- Delaware County, Ohio
1. Loudoun County, Virginia: $156,821 Median Household Income
The wealthiest county in the United States is Loudoun County, Virginia. The median household income in Loudoun County is $156,821, and the average home value is $722,547. Picturesque landscapes, affluent neighborhoods, and proximity to Washington, D.C., make it a magnet for high-income earners. Loudoun County is home to a number of major corporations, including AOL, Orbital Sciences, and Sequestrum. The county is also known for its excellent schools and high quality of life. Cities like Ashburn and Leesburg boast some of the most grand homes in the area. The cost of living and quality of life are both high in this ultra-affluent US county.
2. Falls Church, Virginia: $155,071 Median Household Income
While not technically a county, the city of Falls Church, Virginia, is a municipality with county-level governance. That means it is fully independent of the surrounding Arlington and Fairfax Counties. It boasts the second-highest median household income in the nation at $155,071, and the average home value in the county is $691,521. Close to Arlington, Alexandria, and Washington, D.C., Falls Church is also home to numerous government agencies and contractors. Known for its top-notch schools and serene neighborhoods, Falls Church is perfect for families and professionals looking for a tranquil yet affluent lifestyle.
3. Santa Clara County, California: $140,258 Median Household Income
Santa Clara County is the richest county in California and the third-wealthiest in the US, with a median household income of $140,258 and a median home value of over $1.4 million. Located in the heart of Silicon Valley, Santa Clara County is synonymous with technological innovation and wealth.
Santa Clara County is home to many of the richest cities in California, including like Los Altos Hills and Cupertino, this county boasts a robust job market, excellent schools, and a high quality of life. Beyond the bustling tech scene, Santa Clara offers attractions like the lush vineyards of the Santa Clara Valley Wine Trail and the iconic Winchester Mystery House.
4. San Mateo County, California: $136,837 Median Household Income
Ranking as the fourth wealthiest county in the USA, San Mateo County, California, has a median household income of $136,837 and an average home value of over $1.5 million. This county is home to several large tech companies, including Oracle and YouTube. It's also home to the richest city in the US, Atherton.
With scenic coastal areas like the town of Half Moon Bay, excellent schools, and affluent communities like Atherton and Hillsborough, it’s no wonder this county ranks high on the list of wealthiest counties in the USA.
5. Fairfax County, Virginia: $133,974 Median Household Income
A stone’s throw from the nation’s capital, Fairfax County is a bustling hub of economic activity. It’s the fifth-richest county in the USA, with 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. Many of the richest cities in Virginia are located in Fairfax County, including Great Falls, McLean, and Wolf Trap.
The county is also known for its excellent schools and high quality of life. Its diverse population and amenities make it a prime destination for those seeking a balanced lifestyle that combines work and play.
6. Marin County, California: $131,008 Median Household Income
Marin County is in the northern part of the San Francisco Bay Area and the sixth-richest county in the USA, with a median household income of $131,008. Marin County is known for its natural beauty, with rugged coastlines and lush forests. This county offers a laid-back yet sophisticated lifestyle, focusing on the outdoors and eco-friendly living. Average home values are 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, art galleries, seafood restaurants, and upscale shopping.
7. Howard County, Maryland: $129,549 Median Household Income
Located between Baltimore and Washington D.C., Howard County is the wealthiest county in Maryland. Boasting a median household income of $129,549 and an average home value of $586,155, it’s the seventh-wealthiest county in the US. Howard County is home to highly-rated public schools and is one of the best places to raise a family in Maryland. It also hosts many large businesses and government agencies, including the National Security Agency and the Johns Hopkins Applied Physics Laboratory. Some of the wealthiest cities in Howard County include Columbia, Ellicott City, and Clarksville.
8. Arlington County, Virginia: $128,145 Median Household Income
Surrounding the Pentagon and situated just across the Potomac River from Washington, D.C., Arlington County is a magnet for government professionals and corporate executives. Its urban setting and thriving job market make it a top choice for high-income earners and young professionals. It’s the eighth-richest county in the USA, with a median household income of $128,145. The average home value in Arlington County is $758,859. The county is known for its excellent schools and high quality of life. Some of the wealthiest cities in Arlington County are Rosslyn and Clarendon.
9. Douglas County, Colorado: $127,443 Median Household Income
Douglas County, Colorado, combines natural beauty with economic prosperity. It’s the ninth-richest county in America, with a median household income of $127,443 and an average home value of $708,993. Douglas County is known for its beautiful scenery, mild climate, and high quality of life. Some of the wealthiest cities include Castle Rock, Parker, and Highlands Ranch. These cities are known for their excellent schools, parks, shopping, and proximity to Denver. Cities like Castle Pines and Lone Tree offer a taste of luxury living, with sprawling estates and access to outdoor activities.
10. Nassau County, New York: $126,576 Median Household Income
On Long Island’s North Shore, Nassau County is synonymous with affluence. Prestigious neighborhoods like Great Neck and Manhasset boast elegant homes, beautiful beaches, top-rated schools, and accessibility to New York City. It’s the tenth-richest county in the US, with a median household income of $126,576. The average home value is $710,430. Some of the wealthiest cities in Nassau County include Glen Cove, Oyster Bay, and Sands Point, all boasting many exquisite waterfront homes.
11. San Francisco County, California: $126,187 Median Household Income
San Francisco, also known as “The City by the Bay,” lies within San Francisco County, California. This county is a cultural and economic hub, renowned for its diverse population, iconic landmarks like the Golden Gate Bridge, and thriving arts scene. Median home prices in San Francisco hover around $1.3 million. With a median household income of $126,187, it’s one of the wealthiest counties in America. Some of the wealthiest cities in San Francisco County include Pacific Heights, Presidio Heights, and Sea Cliff, all boasting excellent schools and views.
12. Morris County, New Jersey: $123,727 Median Household Income
At number 12 on our list of the wealthiest counties in the US, we have Morris County, which is the richest county in NJ. It has a median household income of $123,727 and an average home value of $605,993. Morris County is known for its affluent suburbs, excellent schools, and scenic countryside. Chatham is a standout city with a rich history, offering tree-lined streets and upscale shopping. Easy access to New York City provides ample job opportunities, while diverse dining and cultural venues cater to many tastes. Popular attractions in Morris County include Morristown National Historical Park, Great Swamp National Wildlife Refuge, and Frelinghuysen Morris Arboretum.
13. Los Alamos County, New Mexico: $123,677 Median Household Income
Los Alamos County in New Mexico delivers a unique blend of scientific innovation and natural beauty. Home to the Los Alamos National Laboratory, this county attracts a highly educated workforce with a median household income of $123,677. The average Los Alamos home value is $510,676, and the wealthiest city in the county is Los Alamos. Residents enjoy attractions like the Bradbury Science Museum, the Bandelier National Monument, or the Los Alamos Neutron Science Center.
14. Hunterdon County, New Jersey: $123,373 Median Household Income
Hunterdon County is number 14 on our list of the richest US counties. It has a median household income of $123,373 and an average home value of $552,490. The job market is strong, and many residents commute to nearby New York City or Philadelphia. Hunterdon County boasts a low crime rate and excellent schools. Charming villages, rolling farmlands, and a lively equestrian culture make it an ideal choice for those seeking a peaceful yet prosperous lifestyle. Hunterdon County attractions include the Round Valley Reservoir and the Hunterdon Art Museum.
15. Somerset County, New Jersey: $121,695 Median Household Income
With a median household income of $121,695 and an average home value of $580,058, Somerset County, also in New Jersey, is 15th on our list. It’s in the central part of the state, about 45 minutes from New York City and Philadelphia. Somerset is known for its affluent suburbs, excellent schools, well-maintained parks, golf courses, and country clubs, offering a refined yet family-friendly environment. The strong job market and excellent healthcare facilities add to its draw. Bernardsville stands out for its grand estates and prestigious atmosphere. Delaware and Raritan Canal State Park and the Sourland Mountain Preserve provide outdoor leisure and sightseeing opportunities.
16. Forsyth County, Georgia: $120,999 Median Household Income
With a median household income of approximately $120,999 and an average home value of $585,677, Forsyth County is the wealthiest county in Georgia and the 16th-richest in the USA. It’s known for excellent schools, safe neighborhoods, and affluent residents. The cost of living is higher than the state average, but the job market is strong, and the amenities are plentiful. Things to do include visiting the Lake Lanier Islands, hiking in the Chattahoochee National Forest, and exploring the Alpharetta Arts Center, making it a haven for outdoor and cultural enthusiasts.
17. Calvert County, Maryland: $120,295 Median Household Income
With a median household income of $120,295, Calvert County, Maryland, takes 17th place on our list of the wealthiest counties in the USA. Located on the Chesapeake Bay, Calvert County has many stunning waterfront properties and a low crime rate. The average home value in Calvert County is $450,461. Residents enjoy a mix of recreational activities and a relaxed, coastal lifestyle. Solomons and Chesapeake Beach are some of the most sought-after cities in the county. It’s home to many historical and cultural attractions and parks, including 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, and the average home value is just over $500,000. Centrally located between Washington, D.C., and Richmond, Virginia, Stafford County is a great place to live for eager young professionals and families. Things to do in the area include exploring the Stafford Historical Society Museum and the nearby Prince William Forest Park. Its blend of historic sites, modern amenities, and economic opportunities make it a sought-after destination to call home.
19. Montgomery County, Maryland: $117,345 Median Household Income
Montgomery County, with a median household income of $117,345, is a diverse and thriving region bordering Washington, D.C., providing ample job opportunities in various sectors. Bethesda and Potomac are known for their luxurious homes and affluent residents. The average Montgomery County home value is $594,302. This area is great for families, with highly rated public schools, low crime rates, and a vibrant arts and culture scene. It’s also home to the Smithsonian National Zoo and the Strathmore Music Center. It’s the 19th-richest county in the USA.
20. Nantucket County, Massachusetts: $116,571 Median Household Income
Known for its idyllic beaches and charming New England architecture, Nantucket County is a haven for those seeking a luxurious coastal lifestyle. The island’s exclusivity and natural beauty make it a prized place to live. When we say exclusive, we mean it. The average Nantucket home value is over $2.6 million – that’s 318% higher than the US average. The cost of living and quality of life are both very high in this area. Nantucket County has many attractions, including the Nantucket Whaling Museum, Cisco Brewers, the Nantucket Shipwreck & Lifesaving Museum, and many gorgeous 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. The median household income is $116,284, and the average home value is $471,836. In central Ohio, north of Columbus, Delaware County offers a blend of rural charm and suburban convenience. Wealthy communities like Powell, Delaware, and Dublin boast excellent schools, well-maintained neighborhoods, and a thriving job market. Things to enjoy include the Columbus Zoo and Aquarium and the Delaware County Historical Society Museum. You’ll also find great fishing, camping, and hiking in Alum Creek State Park.
Richest Counties in the US Bottom Line
These 21 affluent counties offer a variety of amenities and attractions. They are home to some of the best schools in the country, high-paying jobs, and a variety of cultural and recreational activities. With the high quality of life comes a high price tag, as the cost of living in these counties 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 rich and successful as affluent and highly sought-after places to live in the country.
If you enjoy learning about the wealthiest locations across the nation, make sure to also check out our article on the richest cities in the USA.