For the wine region, see Napa Valley AVA. Napa County is a county located north of San Pablo Bay in the northern portion of the U.S. state of California. As of the 2010 census, the population was 136,484. The county seat is the City of Napa. Napa County was one of the original counties of California, created in 1850 at the time of statehood.
Area code 412 is a Pennsylvania area code that covers Pittsburgh and some of the surrounding areas. Area code 412 overlays the area code of 878. Pennsylvania has area codes of 215, 267, 272, 412, 484, 570, 610, 717, 724, 814, 878.
704 and 980. Charlotte, NC utilizes an area code overlay in which area codes 704 and 980 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary. In addition to Charlotte, NC area code information read more about area codes 704 and 980 details and North Carolina area codes.Charlotte, NC is located in Mecklenburg County and observes the Eastern Time Zone. View our Times by Area Code tool.en digit dialing (area code + seven digit number) is necessary. In addition to Charlotte, NC area code information read more about area codes 704 and 980 details and North Carolina area codes.