Age ain't nothing but a number? Not the case in the upcoming 33rd season of "Survivor." Age matters a lot, since the season breaks down the cast members by generation.

CBS announced the 20-person cast of "Survivor: Millennials vs. Gen X," and as usual, it's a mixed bag of occupations and backgrounds. But as the season's title indicates, there's a clear generational divide between the two tribes. As the network said in a statement,

Millennials, the largest living generational group and most diverse in U.S. history (source: PewResearch.org and U.S. Census Bureau), grew up in a time of rapid change and are often described as having priorities that are vastly different from previous generations. How will this group fare without technology on the island? Will they opt for shortcuts in challenges or go the distance? Generation X forms the bridge between the Baby Boomers and the Millennials and has been collectively labeled as hard-working and independent people. Will they be able to find some commonalities with the younger castaways or stick to their own group? Will their differences and preconceived beliefs be too much to overcome?

Here are the castaways. First, the Vanua, or millennials, tribe:Adam Klein
Age: 25
Current Residence: San Francisco
Occupation: Homeless Shelter Manager

Hannah Shapiro
Age: 24
Current Residence: West Hollywood, Calif. via Brookline, Mass.
Occupation: Barista

Jessica "Figgy" Figueroa
Age: 23
Current Residence: Nashville, Tenn. via Indianapolis, Ind.
Occupation: Bartender

Justin "Jay" Starrett
Age: 27
Current Residence: Fort Lauderdale, Fla.
Occupation: Real Estate Agent

Mari Takahashi
Age: 31
Current Residence: Los Angeles via San Francisco
Occupation: Professional Gamer

Michaela Bradshaw
Age: 25
Current Residence: Fort Worth, Texas
Occupation: Vacation Club Sales

Michelle Schubert
Age: 28
Current Residence: Yakima, Wash.
Occupation: Missionary Recruiter

Taylor Lee Stocker
Age: 24
Current Residence: Postfalls, Idaho via Spokane, Wash.
Occupation: Ski Instructor

Will Wahl
Age: 18
Current Residence: Long Valley, N.J.
Occupation: High School Student

Zeke Smith
Age: 28
Current Residence: Brooklyn, N.Y.
Occupation: Asset Manager

And now, the Takali, or Gen X, tribe:Bret LaBelle
Age: 42
Current Residence: Dedham, Mass.
Occupation: Police Sergeant

Chris Hammons
Age: 38
Current Residence: Moore, Okla.
Occupation: Trial Lawyer

Ciandre "CeCe" Taylor
Age: 39
Current Residence: Granada Hills, Calif. via Buffalo, N.Y.
Occupation: Insurance Adjuster

David Wright
Age: 42
Current Residence: Sherman Oaks, Calif. via Philadelphia, Penn.
Occupation: Television Writer

Jessica Lewis
Age: 37
Current Residence: Voorheesville, N.Y.
Occupation: Assistant District Attorney

Ken McNickle
Age: 33
Current Residence: Denver via Hana, Maui
Occupation: Model

Lucy Huang
Age: 42
Current Residence: Diamond Bar, Calif.
Occupation: Dietician

Paul Wachter
Age: 52
Current Residence: Sugarloaf Key, Fla. via Long Island
Occupation: Boat Mechanic

Rachel Ako
Age: 37
Current Residence: Los Angeles. Originally from Honolulu, Hawaii.
Occupation: Recruiting Director

Sunday Burquest
Age: 45
Current Residence: Otsego, Minn.
Occupation: Youth Pastor

"Survivor: Millennials vs. Gen X" premieres Wednesday, Sept. 21 at 8 p.m. on CBS.

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