St. Helena, California's Details


  • Country : United States
  • Motto : Napa Valley's Main Street, The Heart Of Napa Valley
  • State : California
  • Land : 12.83km2 | 4.96 sq mi
  • Water : 0.33 km2 | 0.13 sq mi | 0.81 %
  • City

  • City : 13.16 km2 | 5.08 Sq mi
  • Coordinates


  • 38°30′19″N 122°28′13″W
  • Code(s)


  • Zip Code : 94574
  • Area Code : 707
  • Website


  • Website : ci.st-helena.ca.us
  • Elevation


  • Elevation : 77 m | 253 ft
  • Time Zone


  • UTC -08:00
  • Summer : UTC -07:00