Cook the bacon in a skillet over medium heat until crisp, then drain on paper towels and crumble into small pieces.
In a large mixing bowl, whisk together the mayonnaise, sour cream, and dry ranch seasoning until well combined.
Add the drained corn, crumbled bacon, shredded cheddar cheese, sliced green onions, and diced jalapeño to the bowl.
Toss all ingredients together until the corn is thoroughly and evenly coated with the dressing.
Season with black pepper to taste.
Cover the bowl and refrigerate for a minimum of 60 minutes prior to serving to allow the flavors to integrate.