Stockton, CA Area Codes

Area codes serving Stockton

Stockton sits in California, part of the West region and the Pacific Time zone. Its numbers are spread across an overlay of 2 codes that all cover the same ground: 209, 350.

The original code is 209 (in service since 1958). As the area ran low on numbers, regulators added overlay codes on top instead of splitting the city, so longtime residents kept their numbers while new lines received a newer code.

Code	Area served	In service
209	Northern San Joaquin Valley and Sierra foothills including Stockton, Modesto and Merced	January 1, 1958
350	Northern San Joaquin Valley and Sierra foothills including Stockton, Modesto and Merced	November 28, 2022

Nearby cities sharing these area codes

• Modesto
• Merced
• Tracy
• Manteca
• Turlock
• Lodi
• Ceres
• Los Banos
• Oakdale
• Atwater
• Riverbank
• Sonora

How to pick an area code for a new number

When you activate a new line in Stockton, the carrier assigns whichever code has numbers available — you usually can't choose. If a specific code matters to you (for example the prestige of 209), ask the carrier whether any blocks remain, or request a number transfer. All codes here dial identically and cost the same.

Dialing in Stockton

Because Stockton is an overlay area, 10-digit dialing is mandatory: always dial the area code plus the seven-digit number, even for a neighbor. See 10-digit dialing and overlay area codes for the background. For every code in California, visit the California area codes page.