Castle Rock Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $4.01 | $4.46 | $4.77 | $4.69 | - |
| Month Ago Avg. | $3.99 | $4.47 | $4.76 | $4.69 | - |
Highest Recorded Average Gas Price In Castle Rock Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $4.7 | 06/15/26 |
| Regular | $4.01 | 06/15/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Castle Rock
King Soopers in Castle Rock (5544 Promenade Pkwy)
5544 Promenade Pkwy, Castle Rock, Colorado,
$3.45
Jul 18, 2026
0¢ Cashback
Safeway in Castle Rock (880 S Perry St)
880 S Perry St, Castle Rock, Colorado,
$3.59
Jul 18, 2026
0¢ Cashback
7-Eleven in Castle Rock (810 Wilcox St)
810 Wilcox St, Castle Rock, Colorado,
$3.99
Jul 18, 2026
0¢ Cashback
Maverik in Castle Rock (4455 Lombard St)
4455 Lombard St, Castle Rock, Colorado,
$4.08
Jul 18, 2026
0¢ Cashback
Phillips 66 in Castle Rock (80 Plum Creek Pkwy)
80 Plum Creek Pkwy, Castle Rock, Colorado,
$4.74
Jul 18, 2026
0¢ Cashback
Phillips 66 in Castle Rock (6385 Promenade Pkwy)
6385 Promenade Pkwy, Castle Rock, Colorado,
$4.77
Jul 18, 2026
0¢ Cashback
Circle K in Castle Rock (94 W Wolfensberger Rd)
94 E Wolfensberger Rd, Castle Rock, Colorado,
$4.79
Jul 18, 2026
0¢ Cashback
Phillips 66 in Castle Rock (1175 Aloha St)
1175 Aloha St, Castle Rock, Colorado,
$4.79
Jul 18, 2026
0¢ Cashback
Circle K in Castle Rock (23 Wolfensberger Rd)
23 Wolfensberger Rd, Castle Rock, Colorado,
$4.79
Jul 18, 2026
0¢ Cashback
Maverik in Castle Rock (3991 LIMELIGHT)
3991 Limelight Ave, Castle Rock, Colorado,
$4.88
Jul 18, 2026
0¢ Cashback
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Gas Data Methodology
The fuel prices published in this guide are based on the results of research completed by Way.com’s data team. Using a mix of external and internal data, we analyzed millions of prices across U.S. ZIP codes and globally.