Arlington, Virginia, is a densely populated urban county located just across the Potomac River from Washington, D.C. Known for its vibrant neighborhoods, excellent public services, and proximity to the nation's capital, Arlington is one of the most desirable places to live in the Washington metropolitan area. As of the 2020 Census, Arlington has a population of approximately 240,000 residents, making it a relatively large and dynamic county in terms of both size and influence.

The median age in Arlington is about 34 years, reflecting the youthful and professional demographic that the county attracts. Arlington is home to a diverse mix of residents, including young professionals, families, and government employees, with many individuals employed in the D.C. area. This demographic is also reflected in the county's high population density, which stands at around 8,000 people per square mile—among the highest in the region.

Arlington has a relatively high average individual income. The average individual income is estimated to be around $70,000 to $80,000 annually, significantly higher than the national average. The area is known for its educated workforce, with a large portion of the population holding bachelor’s and advanced degrees. The high income level is reflective of the county's well-paying jobs, particularly in sectors such as government, defense, technology, and consulting.

Arlington's prime location, excellent public schools, numerous parks, and vibrant local culture make it an attractive destination for both young professionals and families. The county is well-connected by public transportation, including multiple Metro stations and extensive bus networks, providing easy access to the broader D.C. area. This accessibility is a key factor in Arlington's popularity, as it combines the benefits of suburban living with the conveniences of urban life.

Overall, Arlington, Virginia, is a thriving, affluent community known for its high quality of life, excellent amenities, and strong economic opportunities. Its proximity to Washington, D.C., makes it a desirable place to live, work, and play for many who are part of the region’s dynamic workforce.