The 512 area code is located in the state of Texas, and according to Intelius data, covers roughly 1,174,885 phone numbers and 1,650,716 listings across 795 prefixes.
This is a General Purpose Code, in service since January 1, 1947.
Area code 512 is part of an overlay complex shared with:
Local calls within area code 512 require 10 digits dialing, while long-distance calls require 1 plus 10 digits dialing.
Have you received a call from a number with a 512 area code? Figure out who is calling you by performing a reverse phone lookup search. Intelius can provide you with a phone report that includes (when available) original line type and carrier, the number owner’s name, last known address and past addresses, age, possible relatives, and more.
| County Population (2025) | 118,908 |
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| County Population (2025) | 304,390 |
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| County Population (2025) | 1,389,670 |
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| County Population (2025) | 752,827 |
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