Sunnyvale, Texas
Central Time Zone (UTC-6) · TX · —
972
1996
Dallas
Texas
Central
Split
214
⬡ 1947
Dallas
Texas
Central
+2
469
1999
Dallas
Texas
Central
Overlay
About Area Codes in Sunnyvale, Texas
Sunnyvale, Texas is served by 3 area codes: 972, 214, 469. When multiple area codes serve the same geographic area, it typically indicates overlay codes have been added to accommodate growing demand for phone numbers. All local calls within Sunnyvale require 10-digit dialing. The city is in the Central time zone (UTC-6).
Other cities in area code 972
Frequently Asked Questions
What area code is Sunnyvale, Texas?
Sunnyvale, Texas uses area codes 972 and 214 and 469.
What time zone is Sunnyvale in?
Sunnyvale is in the Central time zone (UTC-6).
Do I need to dial 10 digits when calling Sunnyvale?
Yes, all local calls in Sunnyvale require 10-digit dialing because the area is served by multiple overlay area codes.
When was area code 972 created?
Area code 972 was established in 1996 as a geographic split from a larger area code region to serve the growing population.
What cities share area code 972 with Sunnyvale?
Other cities sharing area code 972 with Sunnyvale include Allen, Carrollton, Dallas, Farmers Branch, Frisco, among others.
Also called Sunnyvale:
Sunnyvale, TX · Central Time Zone