San Diego

San Diego (/ˌsæn diˈɡ/ SAN dee-AY-goh, Spanish: [san ˈdjeɣo]; Spanish for 'Saint Didacus') is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932,[11] it is also the eighth most populous city in the United States and the seat of San Diego County, the fifth most populous county in the United States, with 3,338,330 estimated residents as of 2019. The city is known for its mild year-round climate, natural deep-water harbor, extensive beaches and parks, long association with the U.S. armed forces, and recent emergence as a healthcare and biotechnology development center. San Diego is the second largest city in the state of California after Los Angeles.

San Diego
Nickname(s): 
"America's Finest City", "Birthplace of California", "City in Motion"[1]
Motto: 
Semper Vigilans (Latin for 'Ever Vigilant')
Location within San Diego County
San Diego
Location within California
San Diego
Location within the United States
Coordinates: 32°42′54″N 117°09′45″W
CountryUnited States
StateCalifornia
CountySan Diego County
EstablishedJuly 16, 1769
IncorporatedMarch 27, 1850[2]
Named forSaint Didacus of Alcalá
Government
  TypeStrong Mayor[3]
  BodySan Diego City Council
  MayorTodd Gloria (D)
  City AttorneyMara Elliott (D)[4]
  City Council[5]
List
  State Assembly Members
List
  State Senators
List
Area
  Total372.42 sq mi (964.56 km2)
  Land325.88 sq mi (844.02 km2)
  Water46.54 sq mi (120.54 km2)  12.68%
Elevation62 ft (19 m)
Highest elevation1,591 ft (485 m)
Lowest elevation
0 ft (0 m)
Population
 (2020)
  Total1,386,932
  Rank8th in the United States
2nd in California
  Density4,255.96/sq mi (1,643.25/km2)
  Metro3,298,634 (17th)
DemonymSan Diegan
Time zoneUTC−08:00 (PST)
  Summer (DST)UTC−07:00 (PDT)
ZIP Codes[10]
92101–92124, 92126–92132, 92134–92140, 92142, 92143, 92145, 92147, 92149–92155, 92158–92161, 92163, 92165–92179, 92182, 92186, 92187, 92190–92199
Area codes619/858
FIPS code06-66000
GNIS feature IDs1661377, 2411782
WebsiteSanDiego.gov

Historically home to the Kumeyaay people, San Diego is frequently referred to as the "Birthplace of California", as it was the first site visited and settled by Europeans on what is now the U.S. west coast.[12] Upon landing in San Diego Bay in 1542, Juan Rodríguez Cabrillo claimed the area for Spain, forming the basis for the settlement of Alta California 200 years later. The Presidio and Mission San Diego de Alcalá, founded in 1769, formed the first European settlement in what is now California. In 1821, San Diego became part of the newly declared Mexican Empire, which reformed as the First Mexican Republic two years later. California became part of the U.S. in 1848 following the Mexican–American War and was admitted to the union as a state in 1850.

San Diego's main economic engines are military and defense-related activities, tourism, international trade, research, and manufacturing. The city is the economic center of the San Diego–Tijuana conurbation, the second most populous transborder metropolitan area in the Western Hemisphere (after Detroit–Windsor), home to an estimated 4,922,723 people as of 2012.[13] The primary border crossing between San Diego and Tijuana, the San Ysidro Port of Entry, is the busiest international land border crossing in the world outside of Asia (fourth-busiest overall). The city's airport, San Diego International Airport, is the busiest single-runway airport in the world.[lower-alpha 1][14]


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