Alameda ( ; ; Spanish for "tree-lined path") is a city in Alameda County, California, United States, located in the East Bay region of the Bay Area. The city is built on an informal archipelago in San Francisco Bay, consisting of Alameda Island, Bay Farm Island and Coast Guard Island, along with other smaller islands. As of the 2020 census, the city's population was 78,280.
History
Ohlone era Alameda originally occupied a peninsula connected to Oakland. The area was low-lying and marshy, while higher ground was part of one of the largest coastal oak forests in the world. A local band of the Ohlone tribe inhabited the region for more than 3,000 years. They were present at the time of the arrival of the Spanish in the late 18th century. The Ohlone created numerous oyster shell mounds across the peninsula, some as large as 14 feet tall.
Spanish and Mexican eras
Spanish colonists called the area Encinal, meaning "forest of evergreen oak". What is now Alameda, and much of the East Bay was included in the vast Rancho San Antonio granted to Don Luis María Peralta by the Spanish king who claimed California. The grant was later confirmed by the Republic of Mexico after its independence in 1821 from Spain. Over time, the place became known as Bolsa de Encinal or Encinal de San Antonio.
Early California era
The city of Alameda was founded on June 6, 1853, following the Mexican–American War of 1848 and the subsequent acquisition of California by the U.S.
The name Alameda is Spanish for "grove of poplar trees" or "tree-lined avenue" and was chosen in 1853 as city's official name by popular vote.
At the time, Alameda comprised three small settlements:
Alameda — a village at Encinal and High streets Hibbardsville — located at the North Shore ferry and shipping terminal, and Woodstock — on the west near the ferry piers of the South Pacific Coast and the Central Pacific Railroads. Eventually, the Central Pacific's ferry pier became the Alameda Mole.
The borders of Alameda were expanded to include the entire island in 1872, incorporating Woodstock into Alameda.
In his autobiography, writer Mark Twain described Alameda as "The Garden of California."
The first post office opened in 1854. The first school, Schermerhorn School, was opened a year later in 1855 (eventually renamed as Lincoln School). The San Francisco and Alameda Railroad opened the Encinal station in 1864. The early formation of the Park Street Historic Commercial District (or downtown) was centered near the train lines. With Encinal's own post office opened in 1876, was renamed West End in 1877, and closed in 1891.
On September 6, 1869, the Alameda Terminal made history; it was the site of the arrival of the first train via the First transcontinental railroad to reach the shores of San Francisco Bay, marking the first coast to coast transcontinental railroad in North America.
The Croll Building, on the corner of Webster Street and Central Avenue, was the site of Croll's Gardens and Hotel, used as training quarters for some of the most popular fighters in boxing from 1883 to 1914. Jack Johnson and several other champions all stayed and trained here.
The need for expanded shipping facilities and increased flow of current through the estuary led to the dredging of a tidal canal through the marshland between Oakland and Alameda. Construction started in 1874, but it was not completed until 1902, resulting in Alameda becoming an island.
Modern era
In 1917, a private entertainment park called Neptune Beach was built in the area now known as Crab Cove, which became a major recreation destination in the 1920s and 1930s. It was sometimes referred to as the "Coney Island of the West". The popsicle was first sold to the public at Neptune Beach in 1923. The park closed down in 1939.
The Alameda Works Shipyard was one of the largest and best-equipped shipyards in the country. Together with other industrial facilities, it became part of the defense industry buildup before and during World War II, which attracted many migrants from other parts of the United States for the high-paying jobs. In the 1950s, Alameda's industrial and shipbuilding industries thrived along the Alameda Estuary.
In the early 21st century, the Port of Oakland, across the estuary, has become one of the largest ports on the West Coast. Its operators use shipping technologies originally experimented within Alameda. As of April 2006, Alameda is a "Coast Guard City", one of six then designated in the country (as of 2025, it is one of 34).
In addition to the regular trains running to the Alameda Mole, Alameda was also served by local steam commuter lines of the Southern Pacific (initially, the Central Pacific). Alameda was the site of the Southern Pacific's West Alameda Shops, where all the electric trains were maintained and repaired. These were later adapted as the East Bay Electric Lines. The trains ran to both the Oakland Mole and the Alameda Mole.
In the 1930s Pan American Airways established a seaplane port along with the fill that led to the Alameda Mole, the original home base for the China Clipper flying boat. In 1929, the University of California established the San Francisco Airdrome located near the current Webster Street tube as a public airport. The Bay Airdrome had its gala christening party in 1930. The Airdrome was closed in 1941 when its air traffic interfered with the newly built Naval Air Station Alameda (NAS Alameda).
In the late 1950s, the Utah Construction Company began a landfill beyond the Old Sea Wall and created South Shore.
On February 7, 1973, a USN Vought A-7E Corsair II fighter jet on a routine training mission from Lemoore Naval Air Station suddenly caught fire above the San Francisco Bay, crashing into the Tahoe Apartments in Alameda. Eleven people including the pilot died in the crash and fire.Kulczyk, David. (2009). Death In California – The Bizarre, Freakish, and Just Curious Ways People Die in the Golden State. Craven Street Books. P117
Geography
Alameda has been given the nickname "The Island City". It consists of three major areas:
Alameda Island – The main island of Alameda, it was created by dredging a channel between Oakland and the former peninsula.
Bay Farm Island – Part of the mainland proper, and attached to Oakland. Coast Guard Island – A small island between Alameda Island and Oakland, home of Integrated Support Command Alameda.
Alameda Point, Bay Farm Island, and South Shore are largely built on bay fill. Not all of Alameda Island is part of the City of Alameda; a small portion of a dump site west of the former runway at Alameda Naval Air Station extends far enough into San Francisco Bay that it is over the county line and therefore part of the City and County of San Francisco. Ballena Isle, an even smaller island, is also part of Alameda.
Neighborhoods
Alameda comprises numerous neighborhoods spread across the main island and Bay Farm. While the city has no official lists, names have been given to multiple. Alameda Point – Located near the western end of the island, Alameda point comprises the former Naval Air Station Alameda area. It houses numerous breweries, housing developments, and offices. Bronze Coast Central Alameda East End Fernside Gold Coast Harbor Bay Marina Village South Shore – Also known as Shoreline, it is separated from the main part of Alameda Island by a lagoon. It houses the South Shore Center shopping plaza, which contains grocery stores and restaurants. West End
Climate This region experiences warm (but not hot), dry summers, and cool (but not cold), wet winters. According to the Köppen climate classification system, Alameda has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps. Annual precipitation is about , all rain (snow is extremely rare at sea level in the San Francisco Bay Area).
Hazards The low-lying island has seen sea-level and groundwater level rise threaten its infrastructure and people not just through flooding events, but through the increased liquefaction risk from more saturated soils. The locations of increasing groundwater-induced risks and flooding risks may be most precise in private insurance company maps.City of Alameda. "THE RESPONSE OF THE SHALLOW GROUNDWATER LAYER AND CONTAMINANTS TO SEA LEVEL RISE" Silvestrum Climate Associates. September 2020.https://www.alamedaca.gov/files/assets/public/alameda-pio/slr2020.pdf
Demographics
Racial and ethnic composition
+Alameda, California – Racial and ethnic compositionRace / Ethnicity (NH = Non-Hispanic)Pop 2000Pop 2010% 2000% 2010White alone (NH)37,92133,46832,15252.48%45.34%41.07%Black or African American alone (NH)4,3504,5164,3996.02%6.12%5.62%Native American or Alaska Native alone (NH)3652471730.51%0.33%0.22%Asian alone (NH)18,75722,82225,10725.96%30.92%32.07%Pacific Islander alone (NH)4073423560.56%0.46%0.45%Other race alone (NH)2352785560.33%0.38%0.71%Mixed race or Multiracial (NH)3,4994,0476,1024.84%5.48%7.80%Hispanic or Latino (any race)6,7258,0929,4359.31%10.96%12.05%Total72,25973,81278,280100.00%100.00%100.00%
2020 census
As of the 2020 census, Alameda had a population of 78,280 and a population density of . The census reported that 98.0% of residents lived in households, 0.8% lived in non-institutionalized group quarters, and 1.2% were institutionalized.
The age distribution was 19.9% under the age of 18, 6.7% aged 18 to 24, 28.4% aged 25 to 44, 27.4% aged 45 to 64, and 17.5% who were 65 years of age or older, and the median age was 41.4 years. For every 100 females there were 91.2 males, and for every 100 females age 18 and over there were 88.2 males age 18 and over.
There were 30,980 households in Alameda, of which 30.2% had children under the age of 18 living in them. Of all households, 47.7% were married-couple households, 6.6% were cohabiting couple households, 17.0% were households with a male householder and no spouse or partner present, and 28.7% were households with a female householder and no spouse or partner present. About 28.3% of all households were made up of individuals and 11.2% had someone living alone who was 65 years of age or older; the average household size was 2.48. There were 19,640 families (63.4% of all households).
There were 33,009 housing units at an average density of , of which 6.1% were vacant. The homeowner vacancy rate was 0.4% and the rental vacancy rate was 5.3%. Of the 30,980 occupied housing units, 48.3% were owner-occupied and 51.7% were occupied by renters.
+ Racial composition as of the 2020 census Race Number Percent White 34,102 43.6% Black or African American 4,608 5.9% American Indian and Alaska Native 441 0.6% Asian 25,412 32.5% Native Hawaiian and Other Pacific Islander 399 0.5% Some other race 3,244 4.1% Two or more races 10,074 12.9% Hispanic or Latino (of any race) 9,435 12.1%
2023 American Community Survey In 2023, the US Census Bureau estimated that 25.4% of the population were foreign-born. Of all people aged 5 or older, 65.4% spoke only English at home, 6.7% spoke Spanish, 6.6% spoke other Indo-European languages, 20.1% spoke Asian or Pacific Islander languages, and 1.2% spoke other languages. Of those aged 25 or older, 93.4% were high school graduates and 60.3% had a bachelor's degree.
The median household income in 2023 was $132,015, and the per capita income was $72,245. About 4.8% of families and 6.9% of the population were below the poverty line.
2010 census
The 2010 United States census reported that Alameda had a population of 73,812.
The population density was . The racial makeup of Alameda was 37,460 (50.8%) White, 23,058 (31.2%) Asian, 4,759 (6.4%) African American, 426 (0.6%) Native American, 381 (0.5%) Pacific Islander, 2,463 (3.3%) from other races, and 5,265 (7.1%) from two or more races. Hispanic or Latino of any race were 8,092 persons (11.0%).