Area code 307
area code for all of Wyoming, United States / From Wikipedia, the free encyclopedia
The map to the right is clickable; click on an area code to go to the page for that code.
Area code 307 is an area code for the U.S. State of Wyoming. It is the only area code for Wyoming. It was one of the first area codes because it was made in 1947.
![Map of Wyoming showing its area code in blue (with border states)](http://upload.wikimedia.org/wikipedia/commons/d/db/Area_code_WY.png)