Area codes in Pleasanton, California
Pleasanton, California uses area code 925. The main Pleasanton area code is 925.
Area codes serving Pleasanton
Phone numbers in Pleasanton are written as ten digits — for example (925) 555-0190 — and fall in the Pacific Time zone.
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Nearby cities
- Dublin area codes
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More cities in California
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- San Francisco area codes
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- San Jose area codes
- Fresno area codes
- Long Beach area codes
- Oakland area codes
Frequently asked questions
What is the area code for Pleasanton?
The main area code for Pleasanton, California is 925.
How many area codes does Pleasanton have?
Pleasanton has 1 area code: 925.
How do you dial a Pleasanton number?
Dial all 10 digits — the area code (925) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.