One cup of diced celery has 96 milligrams of sodium, which is 4 percent of the recommended daily allowance of sodium for adults. This is higher than many other raw vegetables, such as broccoli with 30 milligrams per diced cup.
According to Fox News, a large rib of celery has 50 milligrams of sodium. This is a small percentage of the total recommended daily amount, but it is enough to add a flavor boost to other dishes. Adding celery to soups, salads and casseroles adds a hint of salt for those on low-salt diets. Other sodium-rich vegetables, such as carrots and beets, work similarly to add flavor to dishes without adding table salt.