Costco Rockwall Gas Prices – State Highway 276
- Regular · today
- $3.629▼ −$0.070
- Premium · today
- $4.339▼ −$0.050
USD per gallon · Last updated September 30, 2026 · This station does not sell diesel
1225 State Highway 276, Rockwall, TX 75032-9376 · Open in Maps ↗
30-day range
where today sits- Regular$3.629 today · avg $3.573$3.399 low$3.769 high
- Premium$4.339 today · avg $4.227$3.999 low$4.389 high
Price history at Rockwall
Last 30 days · USD per gallonView data as table
| Date | Regular | Premium |
|---|---|---|
| Sep 1 | $3.459 | $3.999 |
| Sep 2 | $3.399 | $3.999 |
| Sep 3 | $3.399 | $3.999 |
| Sep 4 | $3.399 | $3.999 |
| Sep 5 | $3.399 | $3.999 |
| Sep 6 | $3.399 | $3.999 |
| Sep 7 | $3.399 | $4.059 |
| Sep 8 | $3.399 | $4.059 |
| Sep 9 | $3.449 | $4.059 |
| Sep 10 | $3.479 | $4.059 |
| Sep 11 | $3.599 | $4.199 |
| Sep 12 | $3.599 | $4.299 |
| Sep 13 | $3.599 | $4.299 |
| Sep 14 | $3.629 | $4.359 |
| Sep 15 | $3.749 | $4.369 |
| Sep 16 | $3.769 | $4.319 |
| Sep 17 | $3.659 | $4.249 |
| Sep 18 | — | — |
| Sep 19 | $3.649 | $4.359 |
| Sep 20 | $3.649 | $4.359 |
| Sep 21 | $3.649 | $4.359 |
| Sep 22 | $3.649 | $4.359 |
| Sep 23 | $3.649 | $4.359 |
| Sep 24 | $3.659 | $4.359 |
| Sep 25 | $3.659 | $4.339 |
| Sep 26 | $3.649 | $4.349 |
| Sep 27 | $3.649 | $4.349 |
| Sep 28 | $3.649 | $4.349 |
| Sep 29 | $3.699 | $4.389 |
| Sep 30 | $3.629 | $4.339 |
Last updated September 30, 2026. Prices are collected once daily and can lag same-day changes at the pump.
Today’s price in context
At $3.629 for Regular, Rockwall is tied for the 17th most expensive of 44 Costco gas stations in Texas today, in line with the Texas average of $3.619.
E Plano, 17.5 mi away, is $0.060 cheaper.
- vs the US average
- $0.977 below, at $4.606
- Premium over Regular
- $0.710 — the Texas median is $0.570
- Over the last 30 days
- up $0.170
- Days the price changed
- 13 of 29 reported days
- Cheapest day in the window
- September 8, 2026, at $3.399
- 15-gallon fill
- $54.44, $3.45 more than at the 30-day low
- Nearest cheaper station
- E Plano — 17.5 mi
Rockwall is located at 1225 State Highway 276, Rockwall, TX 75032-9376, in Texas. The gas station sits in the warehouse parking lot and is open to Costco members, selling Regular and Premium — this location does not sell diesel. Gas station hours are 6 a.m. – 10 p.m. on weekdays, 6 a.m. – 8:30 p.m. on Saturdays and 6 a.m. – 7:30 p.m. on Sundays, in local time.
Station details
Rockwall Gas station hours
- Mon–Fri
- 6 a.m. – 10 p.m.
- Saturday
- 6 a.m. – 8:30 p.m.
- Sunday
- 6 a.m. – 7:30 p.m.
Rockwall Warehouse hours
- Mon–Fri
- 10 a.m. – 8:30 p.m.
- Saturday
- 9:30 a.m. – 7 p.m.
- Sunday
- 10 a.m. – 6 p.m.
Costco gas near Rockwall
- 1ForneyForney, TX · 9.8 mi$3.679Regular
- 2E PlanoPlano, TX · 17.5 mi$3.569Regular
- 3DallasDallas, TX · 18.7 mi$3.659Regular
- 4AllenAllen, TX · 21.3 mi$3.569Regular
- 5W PlanoPlano, TX · 23.7 mi$3.579Regular
Distances are straight-line. Prices across the border are shown in that country’s units (¢ per litre).
Cities near Rockwall
- Costco gas prices Forney · TX · 10 mi$3.679
- Costco gas prices Dallas · TX · 19 mi$3.659
- Costco gas prices Plano · TX · 20 mi$3.574
- Costco gas prices Allen · TX · 21 mi$3.569
- Costco gas prices McKinney · TX · 25 mi$3.529
- Costco gas prices Frisco · TX · 29 mi$3.549
- Costco gas prices Lewisville · TX · 31 mi$3.629
- Costco gas prices Celina · TX · 32 mi$3.529
At this location
- Warehouse opened
- April 2009
- Warehouse phone
- (972) 772-1602
- Pumps open before the warehouse
- 4 hours on weekdays
Also at this warehouse: a food court, a pharmacy, an optical department and a tire center.
Costco publishes one number per warehouse; there is no separate line for the gas station.
Frequently asked questions
How much is gas at Costco Rockwall today?
As of the September 30, 2026 reading: Regular $3.629 and Premium $4.339 per gallon. Prices are collected once a day, so the pump can differ.
What time does the Costco Rockwall gas station open?
The pumps are open 6 a.m. – 10 p.m. weekdays, 6 a.m. – 8:30 p.m. Saturdays and 6 a.m. – 7:30 p.m. Sundays, in local time. The pumps open 4 hours before the warehouse on weekdays.
Does the Costco Rockwall gas station sell diesel?
No — this station sells Regular and Premium, and has reported no diesel price in the last 30 days.
Is Costco Rockwall cheaper than the average Costco station in Texas?
Not meaningfully: at $3.629, Regular here is level with the Texas Costco average of $3.619.
Where is the Costco Rockwall gas station?
At 1225 State Highway 276, Rockwall, TX 75032-9376. It sits in the Costco warehouse parking lot and is open to members only.
Do you need a Costco membership to buy gas?
Yes — a Gold Star, Executive or Business membership card has to be scanned at the pump before it will dispense, though a Costco Shop Card also works for non-members.
What payment methods does the Costco gas station accept?
Visa, PIN debit and the Costco Shop Card; US Costco fuel pumps take no cash and no Mastercard, American Express or Discover.
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