Get a Castro Valley phone number with a 510 area code—
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Castro Valley

Within area code 510, Castro Valley is located in Alameda County, California. This area is one of the most populated communities in the state. This valley is named after Don Guillermo Castro who was a famous Californian ranchero and landowner in the area now known as Castro Valley.

Castro Valley phone number plans starting at $1.99


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US$ 1 .99

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  • 7, 30, 90, and 365 Day plans available - extend your number at any time!
  • One-time payment. Perfect for any short term or long term use case



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Looking for a phone number other than Castro Valley?

Need a second or temporary 510 area code number in a nearby city? In addition to Castro Valley, Hushed services and includes Union City, Oakland, Richmond, San Leandro, San Lorenzo, and San Pablo.

The 510 covers California, USA and includes Castro Valley, and includes Union City, Oakland, Richmond, San Leandro, San Lorenzo, and San Pablo. This area code 510 uses the North American Numbering Plan format. The NANP format is a telephone numbering system used by the United States, Canada, and some Caribbean nations. Telephone numbers under the NANP use the following dialing format: +1 country code followed by a three digit area code and seven digit local number. For a 510 local number, check out Hushed!

Moving to Castro Valley & area?

Once you are connected with your new phone number you may want to check out these places.

  • The Cannery Kitchen and Tap - This highly rated restaurant is located on Castro Valley Boulevard and is a great place to eat traditional American cuisine.
  • Norman's Grill - This restaurant specializes in steaks and everything grilled. If you love burgers, they are a menu highlight at Norman's Grill.
  • Pad Thai Cuisine - This restaurant is known for the authentic Thai cuisine that it offers and its extensive menu.
  • More dining out in Castro Valley

What's happening in Castro Valley & area?

  • Lake Chabot Regional Park - This regional park is full of lush green spaces and features activities like hiking, boating and fishing.
  • Anthony Chabot Regional Park - This park has a marksmanship range for anyone who likes to practice shooting in a safe environment.
  • Cull Canyon Regional Recreation Area - This area is a perfect place to relax with your family. It offers a seasonal swimming lagoon and a sandy beach.
  • More things to do in Castro Valley

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