Napa County, California

Napa County
Interactive map of Napa County
Location in the state of California
Coordinates: 38°30′N 122°19′W / 38.50°N 122.32°W / 38.50; -122.32
CountryUnited States
StateCalifornia
RegionSan Francisco Bay Area
FoundedFebruary 18, 1850
Named afterThe city of Napa
County seatNapa
Largest cityNapa
Government
 • TypeCouncil–CEO
 • BodyBoard of Supervisors
 • ChairAmber Manfree
 • Vice Chair Liz Alessio
 • Board of Supervisors
Supervisors
  • Joelle Gallagher
  • Liz Alessio
  • Anne Cottrell
  • Amber Manfree
  • Belia Ramos
 • County Executive OfficerRyan Alsop
Area
 • Total
789 sq mi (2,040 km2)
 • Land748 sq mi (1,940 km2)
 • Water40 sq mi (100 km2)
Highest elevation
4,203 ft (1,281 m)
Population
 (2020)
 • Total
138,019
 • Density185/sq mi (71/km2)
GDP
 • Total$13.166 billion (2022)
Time zoneUTC−8 (Pacific Time Zone)
 • Summer (DST)UTC−7 (Pacific Daylight Time)
Area code707
FIPS code06-055
GNIS feature ID277292
Websitewww.countyofnapa.org

Napa County (/ˈnæpə/ ) is a county north of San Pablo Bay located in the northern portion of the U.S. state of California. As of the 2020 United States census, the population was 138,019. 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. Parts of the county's territory were given to Lake County in 1861.

Napa County comprises the Napa, CA Metropolitan Statistical Area, which is also included in the San Jose-San Francisco-Oakland, CA Combined Statistical Area. It is one of four North Bay counties.

Napa County, once the producer of many different crops, is known today for its regional wine industry. Napa County rose to the first rank of wine regions, along with France, when local wineries Stag's Leap Wine Cellars and Chateau Montelena won the "Judgment of Paris" in 1976.