With oil prices down more than 50 percent from mid-2014 levels, Americans are enjoying the cheapest gas prices they’ve had in years.

However, some are saving more money on cheap gas than others.

Here’s a breakdown of where U.S. gas is cheapest, and where it’s most expensive, according to Gas Buddy.

The Cheapest States

1. Missouri: The average gas price is $1.764 in Missouri, nearly 30 cents below the national average of $2.055.

2. Oklahoma: Drivers are paying only $1.786 per gallon in the Sooner State.

3. Kansas: The trend of cheap gas in the Midwest continues, as gas in Kansas averages only $1.819.

4. Texas: Drivers in the Lone Star State pay only $1.823 per gallon. Texas is also home to the city with the cheapest gas in the country, Lubbock ($1.695 per gallon).

5. New Mexico: New Mexico rounds out the top five with a price of only $1.842 per gallon.

The Most Expensive States

1. Hawaii: With the cost of shipping, it’s understandable why Hawaii’s $3.315 gas price would be highest in the country. Honolulu takes the honor of the U.S. city with the most expensive gas ($3.145 per gallon).

2. Alaska: For exactly the same reason as Hawaii, Alaska takes the number two spot with gas prices of $2.776 per gallon.

3. California: California takes the top spot for expensive gas among the contiguous states, where drivers pay $2.488 per gallon. San Francisco is the most expensive city in the contiguous states ($2.708).

4. New York: The Empire State trails California by less than a cent, with an average price of $2.481.

5. Vermont: Finishing off the top five is Vermont, where drivers pay $2.415 for a gallon of gas.

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