Napa County Colors. Learn more about some of the ways Napa County services impact the community through our new coloring book âNapa County Colors.â Print the PDF version here or pick up an issue at your nearest library. Download a copy.
The 492 area code is NOT a valid area code. This area code is NOT officially assigned to a known Numbering Plan Area (NPA). The 492 area code is not assigned to a city/state location. In most cases with invalid area codes like 492, tend to be used by phone numbers from telemarketing companies.
It is one of the original area codes established in 1947, and originally covered the entire southwest quadrant of the state. In 1996, however, most of the northern and eastern portion of the old 513 territory, including Dayton, was split into area code 937. new area code 283 has been assigned to overlay the current 513 area, but this has been delayed as the 513 area code has not yet been depleted of available numbers.