Diet Coke Price at McDonald's (2026) — Pennsylvania

A Diet Coke costs $2.39 at McDonald's in Pennsylvania, United States (price last updated October 2026).

Based on the latest tracked prices, the Diet Coke® from McDonald's costs $2.39 in the United States (October 2026). That's about 17% below the typical McDonald's drink item — the 11th-cheapest of 53 we track. It's available at around 471 McDonald's locations across the United States. Prices are sourced from delivery platforms and refreshed regularly. Set a free alert to know the moment this price changes on MenuPriceToday.

Compare McDonald's prices across countries — Fast-Food Price Index →