Fries are crispy, comforting, and wildly addictive. But behind the golden crunch often hides a mountain of salt.
Some fast food fries sneak in more sodium than you’d expect—thanks to bold seasoning, massive portions, or secret flavor boosters.
This list uncovers the saltiest spuds from your favorite chains. Grab a napkin and let the salt storm begin.
1. Five Guys Large Fries

Hand-cut and double-fried, these fries are famously overflowing. But that generous portion also brings nearly a day’s worth of sodium.
The peanut oil adds depth, but it’s the sheer volume that turns this salty side into a sodium heavyweight.
2. Arby’s Curly Fries (Large)

That twisty, seasoned crust is full of flavor—and packed with sodium. Each bite hits with spice, crunch, and salt in full force.
Fans love the texture, but that deep-fried spiral hides a serious salt punch under its golden surface.
3. Checkers/Rally’s Seasoned Fries

Bold and peppery, these fries wear their seasoning like armor. It’s smoky, garlicky, and laced with sodium from end to end.
The flavor is addictive, but the salt stacks up quickly. Even a regular serving can leave your lips tingling.
4. McDonald’s Large Fries

Iconic for a reason, these fries are thin, crisp, and consistently salted to perfection. The flavor is simple but relentless.
Though lighter than some, the portion size adds up. You’ll feel the salt more than you realize by the last fry.
5. Popeyes Cajun Fries

These fries don’t hold back. Paprika, cayenne, and garlic coat every craggy edge with a salty Southern kick.
They complement spicy chicken beautifully, but the sodium rush is real—especially in a large order.
6. Wendy’s Large Natural-Cut Fries

Skins-on and thick, these fries have a hearty bite and a bold briny edge. Sea salt clings to every soft ridge.
They feel rustic, but the salt levels are modern fast food high. That natural look hides a not-so-natural sodium load.
7. KFC Secret Recipe Fries

Seasoned like the chicken, these fries carry that signature KFC blend. There’s a salty, savory depth that lingers after every bite.
Spices might be secret, but the salt is obvious. It’s a flavor bomb that keeps building with each fry.
8. Burger King Large Fries

Thicker and heartier than some, these fries soak up both oil and seasoning. The outer crunch seals in serious salt.
They’re deceptively mild-tasting, but the sodium count tells a different story. A large will leave you reaching for water fast.
9. Sonic Drive-In Large Fries

Soft-centered with a crisp edge, these fries feel light but carry a stealthy amount of sodium. The balance is subtle but strong.
They’re easy to eat fast, which means it’s easy to rack up the salt before you know it’s happening.
10. Jack In The Box Seasoned Curly Fries

Twists, curls, and crunchy tips mean more surface for seasoning. These fries are fully loaded with spice and serious sodium.
They’re fun to eat and packed with flavor—but the salt sticks to every nook and cranny with devotion.
11. Chick-Fil-A Waffle Potato Fries

Wide and airy, these waffle fries trap salt in every pocket. The potato flavor shines, but so does the sodium.
Even without added seasoning blends, the natural salt coating gives them a strong, lingering finish.
12. Carl’s Jr. Natural-Cut Fries

Unpeeled edges and a thick cut give these fries a rustic feel. The salt hits up front and doesn’t let go.
They’re dependable and filling, but the salt level pushes them well beyond a simple sidekick.
13. Dairy Queen Regular Fries

Surprisingly salty for their size, these shoestring-style fries come lightly golden with a heavy hand of seasoning.
They pair with burgers and Blizzards alike, but they carry more sodium than their small frame lets on.
14. Shake Shack Crinkle-Cut Fries

Crinkly ridges hold seasoning like a sponge. These fries may look simple, but the salt hits full throttle right away.
Their buttery crunch disguises just how much sodium is layered into every groove and corner.
15. Hardee’s Seasoned Curly Fries

Similar to its sister chain, these curly fries go heavy on spice and even heavier on salt. The flavor builds fast.
A side order feels like a meal, thanks to bold taste and sodium-laced coating. It’s a salty twist on a classic.