Rockville, MD
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LiveUpdated Jul 5Gas prices near 20850
Rockville, MD · MD average $3.85/gal
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Finding cheap gas in Rockville (20850)
This is the heart of Rockville proper, taking in the revitalized Rockville Town Center and the master-planned King Farm community out near the Shady Grove Metro station. It sits squarely on the Interstate 270 technology corridor in Montgomery County, surrounded by biotech and software employers and some of the higher household incomes in the Washington suburbs.
Affluence and density here mean a lot of stations, but it also means real-estate-driven pricing. Maryland's fuel tax, over 46 cents a gallon, already sets a high baseline, and stations close to the I-270 ramps and the busiest commuter junctions know their customers value a fast in-and-out more than the lowest number on the sign.
Your better odds are at the warehouse-club and grocery fuel scattered through the retail centers, which tend to undercut the freestanding branded corners by a useful margin. With Costco and similar anchors in the broader Rockville area, members can do noticeably better than the everyday stations along the main arterials. Comparing before you pull in is worth the minute, because the spread across this ZIP is wider than the dense layout might suggest.
Nearby ZIP codes in Rockville, MD
How to save more on gas in Rockville
1. Use warehouse clubs
Costco and Sam’s Club typically price 15-25 cents per gallon below nearby stations. Membership pays for itself within a few fill-ups.
2. Fill up early in the week
Stations often raise prices Thursday for weekend demand. Fill up Monday through Wednesday to avoid the lift.
3. Keep tires properly inflated
Properly inflated tires improve fuel economy by up to 3 percent at current prices. Check pressure once a month.
4. Check back tomorrow
Prices can shift 10-20 cents overnight during volatile markets. A quick check before you leave home avoids paying yesterday’s spike.
5. Pay cash at split-pricing stations
Stations with cash and credit split pricing typically save an average of 10 cents per gallon when you pay cash.
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About gas prices in Maryland
Maryland is a PADD 1B Central Atlantic state with reformulated gasoline requirements in the Baltimore-DC corridor that add 5 to 15 cents per gallon over the rest of the state. The state gas tax is around 47 cents per gallon, among the highest on the East Coast. Baltimore, Annapolis, and the DC suburbs (Bethesda, Silver Spring, Rockville) all draw supply from harbor terminals at Port of Baltimore plus pipeline imports through Plantation and Colonial systems. Costco, Sam's Club, BJ's Wholesale (popular in the suburbs), Wawa, and Royal Farms lead on value across Baltimore, Annapolis, and Rockville. Western Maryland (Hagerstown, Cumberland) typically tracks Pennsylvania pricing rather than the Baltimore-DC corridor.