Medium Diet Coke Price at McDonald's (2026) — Illinois
A Medium Diet Coke costs $1.99 at McDonald's in Illinois, United States (updated June 2026).
A Medium Diet Coke® at McDonald's costs $1.99 in the United States as of June 2026. That's about 33% below the average McDonald's drink item — the 11th-cheapest of 32 we track. It's available at around 472 McDonald's locations across the United States. Prices are sourced from delivery platforms and refreshed regularly. Check the full McDonald's menu or compare drink prices on MenuPriceToday.
Frequently asked questions
How much does Medium Diet Coke cost at Mcdonalds in United States?
Medium Diet Coke costs $1.99 at Mcdonalds in United States as of June 2026. Prices are sourced from Uber Eats and updated regularly on MenuPriceToday.
Where can I order Medium Diet Coke in United States?
You can order Medium Diet Coke from Mcdonalds via Uber Eats in United States. Compare prices on MenuPriceToday first so you never overpay.
How often are Mcdonalds prices updated?
We refresh Mcdonalds menu prices regularly from delivery platforms, so the Medium Diet Coke price you see reflects the latest available data.