These foods are good sources of Potassium..
Food Sources of Potassium ranked by milligrams of potassium per standard amount, also showing calories in the standard amount. (The AI for adults is 4,700 mg/day potassium.)
Food, Standard Amount
Potassium (mg)
Calories
Sweetpotato, baked, 1 potato (146 g)
694
131
Tomato paste, ¼ cup
664
54
Beet greens, cooked, ½ cup
655
19
Potato, baked, flesh, 1 potato (156 g)
610
145
White beans, canned, ½ cup
595
153
Yogurt, plain, non-fat, 8-oz container
579
127
Tomato puree, ½ cup
549
48
Clams, canned, 3 oz
534
126
Yogurt, plain, low-fat, 8-oz container
531
143
Prune juice, ¾ cup
530
136
Carrot juice, ¾ cup
517
71
Blackstrap molasses, 1 Tbsp
498
47
Halibut, cooked, 3 oz
490
119
Soybeans, green, cooked, ½ cup
485
127
Tuna, yellowfin, cooked, 3 oz
484
118
Lima beans, cooked, ½ cup
484
104
Winter squash, cooked, ½ cup
448
40
Soybeans, mature, cooked, ½ cup
443
149
Rockfish, Pacific, cooked, 3 oz
442
103
Cod, Pacific, cooked, 3 oz
439
89
Bananas, 1 medium
422
105
Spinach, cooked, ½ cup
419
21
Tomato juice, ¾ cup
417
31
Tomato sauce, ½ cup
405
39
Peaches, dried, uncooked, ¼ cup
398
96
Prunes, stewed, ½ cup
398
133
Milk, non-fat, 1 cup
382
83
Pork chop, center loin, cooked, 3 oz
382
197
Apricots, dried, uncooked, ¼ cup
378
78
Rainbow trout, farmed, cooked, 3 oz
375
144
Pork loin, center rib (roasts), lean, roasted, 3 oz
371
190
Buttermilk, cultured, low-fat, 1 cup
370
98
Cantaloupe, ¼ medium
368
47
1%-2% milk, 1 cup
366
102-122
Honeydew melon, 1/8 medium
365
58
Lentils, cooked, ½ cup
365
115
Plantains, cooked, ½ cup slices
358
90
Kidney beans, cooked, ½ cup
358
112
Orange juice, ¾ cup
355
85
Split peas, cooked, ½ cup
355
116
Yogurt, plain, whole milk, 8 oz container
352
138
From here
http://health.gov/dietaryguidelines/dga2005/document/html/appendixb.htm