A single orange contains about 237 mg of potassium. That covers roughly 5% of the 4,700 mg Daily Value used on nutrition labels, making oranges a moderate but meaningful source of this essential mineral. While they don’t pack as much potassium as bananas or potatoes, oranges contribute a solid amount alongside their well-known vitamin C.
Potassium by Size and Form
Most nutrition databases list a small to medium orange at 237 mg of potassium. Larger oranges will land slightly higher, but the difference between a small and large orange is modest, typically in the range of 30 to 50 mg.
The form you eat matters more than the size. A cup of fresh orange juice contains about 496 mg of potassium, roughly double what you get from eating a whole fruit. That’s because a full cup of juice requires more than one orange to produce. A cup of orange sections (about two small oranges’ worth) comes in around 326 mg. So if you’re specifically trying to boost potassium intake, juice delivers more per serving, though it also comes with more sugar and none of the fiber.
Canned mandarin orange sections are lower, at about 165 mg per half cup. Tangerines also come in below regular oranges at around 139 mg for a small fruit.
How Oranges Compare to Other High-Potassium Foods
Bananas are the food most people associate with potassium, and a medium banana does deliver nearly twice as much as an orange at 451 mg. A medium baked potato with skin blows both away at 926 mg. But potassium is cumulative throughout the day, and an orange at breakfast, a banana as a snack, and a potato at dinner adds up fast.
Here’s a quick comparison of common foods:
- Baked potato (1 medium, with skin): 926 mg
- Orange juice (1 cup): 496 mg
- Banana (1 medium): 451 mg
- Orange (1 small to medium): 237 mg
- Tangerine (1 small): 139 mg
Oranges won’t single-handedly meet your potassium needs, but they’re one of the easiest fruits to grab regularly. That consistency is what matters for hitting your daily target.
How Much Potassium You Actually Need
The Daily Value on food labels is set at 4,700 mg, but the actual recommended adequate intake varies by age and sex. Adult men need about 3,400 mg per day, while adult women need about 2,600 mg. Pregnant women need slightly more, around 2,900 mg. For a woman aiming for 2,600 mg, one orange covers about 9% of the daily target.
Most people in the U.S. fall short of these targets. Adding potassium-rich fruits and vegetables throughout the day is the most practical way to close the gap, since potassium from food is absorbed and used differently than potassium from supplements.
Why Potassium From Oranges Matters
Potassium relaxes the walls of blood vessels, which directly lowers blood pressure. It also plays a central role in muscle function, including keeping your heart beating in a steady rhythm. Getting enough potassium protects against muscle cramping, and a diet consistently rich in potassium is linked to lower risk of stroke and kidney stones over time.
Oranges pair their potassium with vitamin C, fiber, and folate, which makes them more useful than their potassium number alone suggests. Whole foods deliver minerals in a matrix of other nutrients that work together, something a supplement can’t replicate.
Kidney Disease and Potassium Limits
Oranges are classified as a higher-potassium fruit, which can matter if you have chronic kidney disease. Healthy kidneys filter excess potassium efficiently, but damaged kidneys may not, allowing blood levels to rise to a dangerous point.
That said, the National Kidney Foundation notes that most people with kidney disease or a kidney transplant do not need to limit citrus specifically because of potassium. Restrictions depend on your blood potassium levels, your medications, and whether you’re on dialysis. If your lab results show elevated potassium, a kidney dietitian can help you figure out how many servings of higher-potassium fruits fit safely into your meals. One additional note for transplant recipients: grapefruit and grapefruit juice need to be avoided entirely because they interfere with common transplant medications.