Real Estate Trends by County: Explore March 2025 Bay Area Market Stats

1. San Francisco County

San Francisco County, covering an area of 46.9 square miles and home to approximately 883,000 residents, serves as the iconic heart of the Bay Area. This compact peninsula features world-famous landmarks such as the Golden Gate Bridge, Alcatraz Island, and historic cable cars. From the foggy shores of Ocean Beach to the bustling Financial District, San Francisco offers a variety of neighborhoods, each with its unique character. With a remarkable population density of around 18,000 people per square mile, it ranks as one of the most densely populated urban areas in the United States. For the latest housing statistics in March 2025, please refer to the accompanying infographic, curated by Realtor Pat Kapowich using data from the California Association of Realtors.

2. San Mateo County

San Mateo County spans approximately 448 square miles on the Peninsula and is home to around 765,000 residents. It offers an ideal mix of urban convenience and natural beauty. The county stretches from the Pacific Ocean to San Francisco Bay and includes diverse areas, such as coastal communities like Half Moon Bay and the tech hubs of Menlo Park. San Mateo County also hosts the San Francisco International Airport and parts of Silicon Valley, with the prestigious Stanford University nearby. The western coastline features dramatic views of the Pacific Ocean, while the eastern bayshore offers more tranquil water vistas. For detailed information about the housing market in March 2025, please refer to the accompanying infographic from the California Association of Realtors, curated by Realtor Pat Kapowich.

3. Santa Clara County

Santa Clara County, the largest county in the Bay Area population-wise with approximately 1.9 million residents across 1,304 square miles, forms the heart of Silicon Valley. Home to some of the world's most influential technology companies, this innovation powerhouse combines urban living with natural beauty. The county encompasses 15 cities including San Jose (California's third-largest city), Mountain View, Palo Alto, and Cupertino. Residents enjoy Mediterranean climate, cultural diversity, and proximity to both ocean and mountains. Check the accompanying infographic from the California Association of Realtors, curated by Realtor Pat Kapowich, for March 2025's detailed housing statistics across Santa Clara County's competitive real estate markets.

4. Alameda County

Alameda County's housing market demonstrates impressive momentum in March 2025, with the median home price reaching $1.4 million. The county experienced a remarkable 23.1% year-over-year increase in sales volume, showcasing strong buyer demand. Bayareamodern  Oakland and Berkeley remain particularly attractive for buyers seeking relative value compared to San Francisco, with growing inventory providing more opportunities for homeownership. East Bay communities continue to benefit from hybrid work arrangements, allowing buyers to prioritize space and amenities while maintaining reasonable commutes.

5. Contra Costa County

Contra Costa County, covering 720 square miles with approximately 1.1 million residents, stretches from the eastern shores of San Francisco Bay to the Sacramento-San Joaquin Delta. This diverse East Bay region features prestigious communities in Lamorinda (Lafayette, Moraga, Orinda) alongside vibrant cities like Walnut Creek, Concord, and Richmond. Mount Diablo, rising 3,849 feet, provides a dramatic backdrop and spectacular views. The county combines suburban comfort with easy access to urban amenities and outdoor recreation. For detailed March 2025 housing market performance across Contra Costa County's diverse communities, view the accompanying infographic from the California Association of Realtors, curated by Realtor Pat Kapowich.

6. Marin County

Marin County, which spans 520 square miles and is home to approximately 260,000 residents, is located just north of San Francisco, across the iconic Golden Gate Bridge. This naturally beautiful peninsula boasts remarkable geographical diversity, with 80% of its land designated as parks and open spaces. From the majestic redwoods of Muir Woods to the dramatic coastline of Point Reyes National Seashore, Marin offers unparalleled natural beauty. The county features affluent communities such as Sausalito, Mill Valley, and Tiburon, all known for their exceptional quality of life. For a comprehensive overview of the housing market performance across Marin County in March 2025, please refer to the accompanying infographic from the California Association of Realtors, curated by Realtor Pat Kapowich.

7. Sonoma County

Sonoma County, the largest county in the Bay Area, spans approximately 1,768 square miles and is home to around 500,000 residents. This picturesque destination in Wine Country boasts a variety of landscapes, ranging from the Russian River to the Pacific coastline.

For housing market statistics for March 2025 across Sonoma County's communities, please refer to the accompanying infographic from the California Association of Realtors, curated by Realtor Pat Kapowich.

8. Napa County

Napa County spans about 789 square miles and has around 140,000 residents in the northeastern Bay Area. Famous for its wine industry, the valley features over 300 wineries and a Mediterranean climate. Key communities include Napa, St. Helena, Calistoga, and Yountville, which are known for their exceptional dining, including Michelin-starred restaurants. Residents also enjoy natural hot springs, hiking trails, and a vibrant arts scene. For housing market statistics in this prestigious Wine Country area, see the California Association of Realtors infographic curated by Realtor Pat Kapowich for March 2025.

9. Solano County

Solano County covers approximately 906 square miles and has around 450,000 residents. It serves as a gateway between the Bay Area and the Sacramento Valley. This diverse county features waterfront communities along Suisun Bay, fertile agricultural land, and suburban neighborhoods. Major cities include Vallejo (the former state capital), Fairfield (the county seat), and Vacaville, each offering various housing options and lifestyles.

Travis Air Force Base significantly contributes to the local economy and community. Solano's strategic location provides convenient access to different regions while maintaining more affordable living costs than many counties in the Bay Area. For detailed housing market data for March 2025 across Solano County, please refer to the accompanying infographic from the California Association of Realtors, curated by Realtor Pat Kapowich.