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Most commonly refers to the area around the bay located in the northern region of California. The peninsula part is based around San Francisco. The other major areas include Oakland in the east bay, and San Jose in the south bay. The Bay Area constitutes of all those regions and suburbs of those cities near the bay. There are, however, common misconceptions of the bay area, such as the Bay Area of Memphis, Tennessee, as well as a few others. THE BAY AREA MOST COMMONLY REFERS TO THE REGION IN NORTHERN CALIFORNIA, YOU CAN NOT DENY THAT.
The rapper Lil' Wyte states that he is from the Bay Area. He is not from the Bay Area in Northern California, so he is in fact a pussy bitch. E-40 and Too Short are from the Bay Area; Vallejo and Oakland, respectively. Dont hate on the Cali Bay Area just cause your state's Bay Area isnt as well known.

Here's an analogy...When people say Portland (there are 14 Portlands in the U.S.), they're most likely talkin about the one in Oregon.

(my bad if i didnt name your city in the definition of the bay area...i got love for the whole bay...vallejo, concord, richmond, pittsburg, sunnyvale, palo alto (EPA), fremont, mateo, marin, berkeley, and every lil town i forgot from gilroy to sactown to santa rosa and back down)
by SayinItHowItIs May 02, 2005
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The San Francisco Bay Area, also known as the Bay Area, is a geographically diverse metropolitan area that surrounds the San Francisco Bay in Northern California. Home to more than eight million people, it is composed of cities, towns, military bases, airports, and associated regional, state, and national parks sprawled over nine counties (ten, according to some agencies) and connected by a massive network of roads, highways, railroads, and commuter rail.
The Bay Area, unlike the typical metropolitan area, contains several distinct urban and suburban centers. While San Jose is the largest city in the Bay Area (having surpassed San Francisco in the 1990 census), for most of its history San Francisco was the largest city in the region. The area containing the city of San Francisco, together with Oakland and San Jose, is the sixth-largest consolidated metropolitan area in the United States.The following lists are based on the ten-county definition of the Bay Area. Cities in bold serve as county seat. The places listed in italics are located in Santa Cruz county, which is excluded by the nine-county definition.

* Alameda County
* Contra Costa County
* Marin County
* Napa County
* San Francisco County
* San Mateo County
* Santa Clara County
* Santa Cruz County
* Solano County
* Sonoma County

Cities with more than 200,000 inhabitants
* San Jose, 953,679
* San Francisco, 799,263
* Oakland, 412,318
* Fremont, 210,158

Cities with 100,000 to 200,000 inhabitants
* Antioch
* Berkeley
* Concord
* Daly City
* Fairfield
* Hayward
* Richmond
* Santa Clara
* Santa Rosa
* Sunnyvale
* Vallejo

Municipalities and suburbs with 10,000 to 100,000 inhabitants
* Alameda
* Alamo
* Albany
* American Canyon
* Ashland
* Bay Point
* Belmont
* Benicia
* Blackhawk-Camino Tassajara
* Brentwood
* Burlingame
* Campbell
* Capitola
* Castro Valley
* Cherryland
* Clayton
* Cupertino
* Danville
* Dixon
* Dublin
* East Palo Alto
* El Cerrito
* El Sobrante
* Foster City
* Gilroy
* Half Moon Bay
* Healdsburg
* Hercules
* Hillsborough
* Lafayette
* Larkspur
* Live Oak
* Livermore
* Los Altos
* Los Gatos
* Martinez
* Menlo Park
* Mill Valley
* Millbrae
* Milpitas
* Moraga
* Morgan Hill
* Mountain View (Santa Clara Co.)
* Napa
* Newark
* Novato
* Oakley
* Orinda
* Pacifica
* Palo Alto
* Petaluma
* Piedmont
* Pinole
* Pittsburg
* Pleasant Hill
* Pleasanton
* Redwood City
* Rohnert Park
* San Anselmo
* San Bruno
* San Carlos
* San Leandro
* San Lorenzo
* San Mateo
* San Pablo
* San Rafael
* San Ramon
* Santa Cruz
* Saratoga
* Scotts Valley
* South San Francisco
* Stanford
* Suisun City
* Tamalpais-Homestead Valley
* Union City
* Vacaville
* Walnut Creek
* Watsonville
* Windsor

Municipalities and suburbs with fewer than 10,000 inhabitants
* Amesti
* Angwin
* Aptos
* Aptos Hills-Larkin Valley
* Atherton
* Bayview-Montalvin
* Belvedere
* Ben Lomond
* Bethel Island
* Black Point-Green Point
* Bodega Bay
* Bolinas
* Bonny Doon
* Boyes Hot Springs
* Boulder Creek
* Brisbane
* Broadmoor
* Buena Vista
* Burbank
* Byron
* Calistoga
* Cloverdale
* Clyde
* Colma
* Corralitos
* Corte Madera
* Cotati
* Crockett
* Day Valley
* Deer Park
* Diablo
* Dillon Beach
* Discovery Bay
* East Richmond Heights
* East Foothills
* El Granada
* El Verano
* Eldridge
* Elmira
* Emeryville
* Fairfax
* Fairview
* Felton
* Fetters Hot Springs-Agua Caliente
* Forestville
* Freedom
* Fruitdale
* Glen Ellen
* Graton
* Green Valley
* Guerneville
* Highlands-Baywood Park
* Interlaken
* Inverness
* Kensington
* Kentfield
* Kenwood
* Knightsen
* La Honda
* Lagunitas-Forest Knolls
* Larkfield-Wikiup
* Lexington Hills
* Loma Mar
* Los Altos Hills
* Loyola
* Lucas Valley-Marinwood
* Montara
* Monte Rio
* Monte Sereno
* Moss Beach
* Mount Eden
* Mount Hermon
* Mountain View, Contra Costa Co.
* Muir Beach
* Occidental
* Opal Cliffs
* Pacheco
* Pescadero
* Point Reyes Station
* Port Costa
* Portola Valley
* Rio del Mar
* Rio Vista
* Rodeo
* Rollingwood
* Roseland
* Ross
* Saint Helena
* San Geronimo
* San Gregorio
* San Martin
* Santa Venetia
* Sausalito
* Sebastopol
* Seven Trees
* Sonoma
* Soquel
* Stinson Beach
* Strawberry
* Sunol
* Sunol-Midtown
* Tara Hills
* Temelec
* Tiburon
* Tomales
* Twin Lakes
* Vine Hill
* Waldon
* West Menlo Park
* Woodacre
* Woodside
* Yountville
STUPID DOO DOO DUMB - album by Mac Dre, most famous Bay Area rapper.
by gostupid November 10, 2006
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Aka YaY Area
Home of the Oakland Raiders and the San Francisco 49ers.

Richmond, Oakland, Vallejo, Pittsburg, San Jose, Hercules, Berkeley, etc.

Northern California also the home of
rappers E-40, San Quin, Federation, Messy Marv, Keak Da Sneak & the one and only MAC DRE!
I'm from the Yay Area Bitch fuck the rest the Yayz da best
by hhgegege March 07, 2005
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The area surrounding the San Francisco Bay. Includes North Bay, East Bay, South Bay and the Peninsula.
Do noth confuse with wannabe Bay Areas like Memphis.
99.999999999999999999% of the time it's refering to the place in the NorCal.
John: I'm from the Bay Area.
Dan: Cool, how's the weather?
John: Crappy.
Dan: Oh, so you're definitely not talking about the REAL Bay Area in California.
John: Uhhh I was talking about Memphis.
Dan: Dude, ur hella crazy. Get with it!
by GYO October 12, 2006
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Usually refers to San Francisco (sco), Oakland, san jose, vallejo, Richmond, etc. Does not refer to Sacramento, modesto, and all those wanna-be towns.
by Raymonddd February 04, 2007
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Generally, the nine counties that have contact with San Francisco Bay. Clockwise they are: Contra Costa, Alameda, Santa Clara, San Mateo, San Francisco, Marin, Sonoma, Napa and Solano counties.

The Bay Area is very distinct and unmistakable to those who are familiar with it's culture and lifestyle. Outsiders often don't get it. You can't fake being from the bay. When you say "frisco", you give yourself away. Bay Area people don't say that.

The term Bay Area as mentioned, almost invariably refers to the San Francisco Bay Area. Other regions that carry this name only do so within their local areas. Some other terms heard in the bay area such as "the south bay" are used in a few other places, most notably in San Diego where there is also a south bay.
bay area Contra Costa, Alameda, Santa Clara, San Mateo, San Francisco, Marin, Sonoma, Napa and Solano counties.
by megascops July 04, 2009
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