Category

San Francisco Bay

Tokyo Bay

Longitude

122.24 W

139.46 E

Latitude

37.48 N

35.40 N

Surface area of bay

1,600 square miles (estuary)

Depth of bay

70% is less than 18 feet, deepest point is 357 feet

Watershed area of bay

Drains 40% of California (60,000 square miles and 47% of the state’s total runoff)

Number of fish species

Over 120

Major rivers flowing
into bay

Sacramento, San Joaquin

Sumida River

Populations of largest cities (1990)

San Jose: 782,248
San Francisco: 723,959
Oakland: 372,242

Tokyo: 8.1 million
Yokohama:
Kawasaki:

Year of city’s founding

San Francisco: 1850

Tokyo: 1457

Area of city

San Francisco: 46.7 sq mi

Tokyo: 223 sq mi/578 sq km

Population of metropolitan area

7 million (4th largest in United States)

28 million (largest in Japan, 25% of the country’s population)

Population of country

250 million

123 million

Region’s largest port

Oakland

Yokohama

Demographics/Ethnic population

1% minority (mostly Korean)

Population density

15,608

37,000 per square mile

Average temperature

58 F° (14 C)

58° F (14 C)

Minimum mean temperature

51° F (11 C)

40° F (4 C)

Maximum mean temperature

63° F (17° C)

79° F (26 C)

Average precipitation

21 inches (79 cm)

57 inches (146 centimeters)

Origin/meaning of
city name

Namesake: St. Francis of Assisi

Formerly called Edo; Tokyo means "Eastern Capital"