There are approximately 80 homes within the confines of this "fortress-like development" off Mulholland, east of Benedict Canyon Drive. To live here, you pretty much have to make (or inherit) bank: according to the American Communities Survey, it is the richest neighborhood in Los Angeles. (There is both a North and South Beverly Park, and both area gated; they once went to war and it was amazing.)

It's not exactly Billionaire's (Carbon) Beach, but Malibu Colony (just east of Perenchio Golf Course) has a notable roster of past and present luminaries and just-plain-rich residents. When it was built in the 1920s, it was called Malibu Beach Motion Picture Colony, a reference to, duh, the motion picture types buying its waterfront spreads.

Behind the gates on La Brea Terrace, you'll only find about a dozen houses, but they're all class, like the historic-cultural monument Atkinson-Farnum-Swain House. The gated 'hood is off La Brea north of Franklin in the Hollywood Hills.

"The only one of Los Feliz’s 'Oak' streets to be gated," LA Home and Style says, is home to some outrageous houses (the largest Craftsman in the US anyone?)

This gated mansion farm has only 14 estates on its spacious 250 acres. It's the kind of neighborhood where Gisele Bundchen and Tom Brady spend five years building a megamansion (with moat!) and then put it up for sale a year after it's finished. What's so hot about this place? The super-tony 'hood has the perfect combo of privacy and incredible vistas.

The gates went up at Brentwood Circle in the mid-'90s in response to the nearby Getty Museum's expansion (all that museum-going riff-raff). Recently, the neighborhood has been in the news because Reese Witherspoon liked it so much, she bought three properties there. (There are less than 70 in the whole community.)

This supremely exclusive enclave prized for its "secluded setting, large mansions and light traffic" is the private street where LA's most noteworthy philanthropists, the Broads (as in Edythe and Eli), have their enormous Gehry-designed estate.

Robert Pattinson's cheesy rental was inside the gates of this six-street enclave, along with about 80 other properties. The houses are a mish-mash of pricey "Mediterranean, Colonial, Traditional, Tudor, contemporary and others," says Luxury LA Homes.

The Oaks attracts the kind of people you're glad are gated off from the rest of the world—Kardashians, Justin Bieber, and Piolín among them—plus non-awful celebs like Selena Gomez and Keyshawn Johnson.

Bel Air Crest's 286 houses are not actually in Bel Air—it overlooks the 405 north of the Getty—and is most famously home to a long remodeling project by Kim Kardashian and Kanye West.

Horsey Rolling Hills—another fully-gated city—is for more low-key and rural types of rich folk, with about 680 houses and lots of riding trails down on the Palos Verdes Peninsula.

Bradbury Estates is sort of like that country only rich people know about; it accounts for a large portion of the very rich, very tiny city of Bradbury, and lots come at a minimum of five acres. Here's a sample of the kind of low-key real estate you'll find there. In-N-Out owner Lynsi Torres is also a resident.