Below is a recap of the important dialing codes you may need for making calls to, from, or within Houston.

Follow links for additional information on any code - or to look up that code for other countries.

Houston phone numbers are 10-digits long consisting of a 3-digit area code and a 7-digit local subscriber number. The phone number format is the same for both landline and mobile phones.

Additional Houston dialing and calling information is provided throughout this site.

Houston dialing instructions

Houston phone numbers

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