If you're a millennial, you're probably living with a roommate (or two or three), considering how rough the economy has been for this generation and how high rent is in most major cities. Remember this meme?

As of July 2016, Zillow, the popular online real estate marketplace, reported that only 9 percent of millennials live alone.

But there are some cities where it really does make sense to have a roommate.

Joking aside, having a roommate can save you a lot of cash — especially if you're living in one of these 10 major cities in the United States, according to SmartAsset, a personal finance technology company.

Here's their breakdown on what renters would save on average each month if they opted for communal living.

1. San Francisco, CA

You're probably not surprised to see San Francisco top the chart. According to SmartAsset, if you're not looking for a roommate then you should be prepared to make "about $152,057 a year to afford a one-bedroom apartment."

With a roommate you would save: $1,106

2. New York, NY

Yup, NYC is another given. It's hard to find someone in NYC who doesn't have a roommate, considering most New Yorkers would have to dish out around $2,891 on average for a standard one-bedroom apartment and approximately $2,587 for a studio, according to SmartAsset. Though, honestly, this seems like a low estimate on their part.

With a roommate you would save: $1,030

3. San Jose, CA

If San Jose seems like a curve ball, realize that many of these cities on this list are on the coast, particularly the (spoiler alert) West Coast, which doesn't happen to be very budget-friendly.

With a roommate you would save: $841

4. Boston, Massachusetts

According to SmartAsset, the average rent is Boston has gone up by 0.66 percent since 2015. A roommate isn't a terrible idea.

With a roommate you would save: $810

5. Oakland, CA

Rent is Oakland is only getting higher, and if you're looking to buy, the average home is around $631,000, which is 13 percent higher than it was last year.

With a roommate you would save: $733

6. Washington, D.C.

The cost of living in D.C. is on the higher side, according to SmartAsset. A typical D.C. resident will spend around $17,976 per year on housing costs, the financial website reports.

With a roommate you would save: $590

7. San Diego, CA

Ron Burgundy only had a dog for a roommate, but you're not racking in the big bucks from a high-profile anchor job, you could save nearly $7,000 on rent a year if you had a roommate.

With a roommate you would save: $564

8. Los Angeles, CA

The cost of rent in the City of Angels continues to shoot up. According to pricing date from Apartment List, in the last year rents in LA have increased 3.1 percent, compared to a national average of 2.1 percent.

With a roommate you would save: $558

9. Long Beach, CA

Moving south of LA won't save you that much cash in this case. SmartAsset notes that rent for one-bedrooms has gone up by 25.2 percent since last year.

With a roommate you would save: $554

10. Portland, OR

The Portlandia sketches aren't too far off. Though SmartAsset notes that renting in Portland isn't "as cutthroat" as other cities, they warn it's not going to get any better as the city becomes a desirable alternative to places like LA and New York.

With a roommate you would save: $546

And here's a handy chart:

SmartAsset - smartasset.com

[h/t LifeHacker]