It's the same. According to checking the information about Starbucks, Starbucks lattes and oatmeal lattes have the same calorie content, both are 470 calories. Starbucks Coffee Company was founded in 1971, headquartered in Seattle, Washington, U.S., is committed to commercially and ethically sourcing and roasting the world's high-quality Arabica coffee, in 82 markets around the world, with more than 32,000 stores Starbucks is the world's premier specialty coffee roasters and retailers.