Area code 707 serves Northern California’s North Bay, Wine Country, inland valleys, and communities along the Pacific coast. A 707 number may belong to a resident, winery, farm, hotel, hospital, school, business, or public office. Its location, history, overlay, and dialing rules explain this diverse region.
Where Is Area Code 707 Located?
Area code 707 is in California. Together with overlay area code 369, it serves all or portions of Del Norte, Glenn, Humboldt, Lake, Marin, Mendocino, Napa, Solano, Sonoma, Tehama, and Trinity counties.
Some of the main cities and communities covered by area code 707 include:
- Santa Rosa
- Vallejo
- Fairfield
- Vacaville
- Napa
- Petaluma
- Eureka
- Rohnert Park
- Ukiah
- Arcata
- Crescent City
- Sonoma
The region stretches from the northern San Francisco Bay Area towards the Oregon border. It includes coastal towns, wine valleys, redwood country, farming areas, and university communities.
History of Area Code 707
Area code 707 was created in 1959 through a geographic split of area code 415. The change gave communities north of San Francisco Bay and along California’s North Coast a separate numbering identity.
As demand for numbers increased, the California Public Utilities Commission approved area code 369 as an overlay. The new code entered service on February 1, 2023. Existing 707 customers kept their numbers, while new customers may receive either code.
Time Zone of Area Code 707
Area code 707 follows the Pacific Time Zone. It uses Pacific Standard Time during standard time and Pacific Daylight Time when daylight saving time applies.
Callers from other regions should check the time difference. California is generally three hours behind the Eastern Time Zone and two hours behind the Central Time Zone.
Major Cities and Their Importance
1. Santa Rosa
Santa Rosa is the largest city in the 707 region and the county seat of Sonoma County. It is a centre for healthcare, education, government, retail, tourism, food production, and wine businesses.
2. Vallejo
Vallejo is a major Solano County city near the northern end of San Francisco Bay. Its economy includes healthcare, government, education, tourism, retail, transport, construction, and maritime activity. Its location connects the North Bay with the wider Bay Area.
3. Fairfield
Fairfield is the county seat of Solano County and an important employment centre. The city supports government, manufacturing, healthcare, retail, logistics, food production, and military-related activity. Major highways connect it with Sacramento and the Bay Area.
4. Napa
Napa is the county seat of Napa County and the main urban centre of Napa Valley. Its economy is connected with wine production, agriculture, tourism, hotels, restaurants, healthcare, retail, and local services. It attracts international visitors.
Who Uses Area Code 707?
Area code 707 is used by residents, wineries, farms, hotels, restaurants, hospitals, schools, universities, government offices, manufacturers, tourism operators, and local companies. It is common in agriculture, wine production, hospitality, healthcare, education, construction, retail, transport, forestry, and fishing.
A 707 number can help a business establish a local presence in Santa Rosa, Vallejo, Fairfield, Napa, Eureka, or nearby communities. It is used for landline, mobile, and internet-based services.
Is Area Code 707 Running Out?
Area code 707 no longer operates alone. The 369 overlay provides additional numbers throughout the same geographic territory. Existing 707 numbers remain valid, while new customers may receive either a 707 or 369 number, depending on availability.
How to Dial Area Code 707
To call a 707 number, use the following dialing methods:
- From within the United States: Dial 1 + 707 + the seven-digit telephone number.
- From outside the United States: Dial +1 + 707 + the seven-digit telephone number.
- For local calls: Use 1 + the area code + the seven-digit number because 707 and 369 share the same region.
Save the complete area code and number in contacts, websites, advertisements, customer records, security systems, and business directories.
Final Thoughts
Area code 707 represents one of Northern California’s most varied regions. It connects Santa Rosa and Sonoma County, Napa Valley, Solano County cities, Mendocino communities, and the North Coast from Eureka towards Crescent City.
Since 1959, 707 has become a familiar regional identity. On a personal call, winery website, hotel booking, school contact, medical office, or company listing, it points to California’s North Bay, Wine Country, and North Coast.
