Yes, 713 is an area code for Houston, Texas, USA, along with area codes 281 and 832, and future area code 346.
No. The entire 713 area code is an overlay with 832, which also overlays the 281 area code.
If it's a 713 number, then it's in area code 713. However, most numbers in Tomball, Texas, are in area code 281 or overlay code 832. Area code 713 numbers are mostly in Houston and the inner suburbs (Bellaire, West U., Pasadena, etc.).
Area code 713 was one of the original area codes introduced in 1947. At that time, it included not only Houston, but also Galveston, Beaumont, Huntsville, Nacogdoches, Bryan, College Station, and Wharton. Area codes 713, 281, 832, 409, 936, and 979 were all part of the original 713.
The country code and area code of Zalingi, Sudan is 249, (0)713.
The country code and area code of Huanggang- HB, China is 86, (0)713.
The country code and area code of San Nicolas Tlazala, Mexico is 52, (01)713.
Missouri City is in area code 281, with overlay code 832. There may also be some Missouri City numbers in area code 713.
There is no such thing as "the ZIP code" (singular) for an area code, since area codes are considerably larger than ZIP codes. You will need to look up the ZIP code for a specific address in that area code.
As of 2014, Houston has four telephone area codes: 713, 281, 832, and 346.
That would be the famous California city called "Houston, Texas."
Cypress, Texas, uses area codes 713, 281, and 832, the same as greater Houston. Area code 346 will be added as a further overlay in 2014.
The dialing code for the USA from the UK is 00 1 The area codes for Houston, Texas, are 713, 281, and 832