Portsmouth Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $3.45 | $3.94 | $4.39 | $4.11 | - |
| Month Ago Avg. | $3.45 | $3.94 | $4.39 | $4.11 | - |
Highest Recorded Average Gas Price In Portsmouth Year to Date
| Price | Date | |
|---|---|---|
| Regular | $3.47 | 07/01/25 |
| Diesel | $4.21 | 02/18/25 |
Top 10 Gas Stations & Cheap Fuel Prices in Portsmouth
Mobil in Portsmouth (201 Islington St)
201 Islington St, Portsmouth, New Hampshire,
$3.48
Sep 05, 2025
0¢ Cashback
Buzzy's Bypass Gas in Portsmouth (500 Maplewood Ave)
500 Maplewood Ave, Portsmouth, New Hampshire,
$3.49
Sep 05, 2025
0¢ Cashback
Sunoco in Portsmouth (565 Islington St)
565 Islington St, Portsmouth, New Hampshire,
$3.49
Sep 05, 2025
0¢ Cashback
Mobil in Portsmouth (803 Lafayette Rd)
803 Lafayette Rd, Portsmouth, New Hampshire,
$3.53
Sep 05, 2025
0¢ Cashback
Sunoco in Portsmouth (766 Lafayette Rd)
766 Lafayette Rd, Portsmouth, New Hampshire,
$3.53
Sep 05, 2025
0¢ Cashback
CITGO in Portsmouth (800 Lafayette Rd)
800 Lafayette Rd, Portsmouth, New Hampshire,
$3.53
Sep 05, 2025
0¢ Cashback
Irving in Portsmouth (2470 Lafayette Rd )
2470 Lafayette Rd, Portsmouth, New Hampshire,
$3.58
Sep 05, 2025
0¢ Cashback
Cumberland Farms in Portsmouth (1475 Lafayette Rd)
1475 Lafayette Rd, Portsmouth, New Hampshire,
$3.59
Sep 05, 2025
0¢ Cashback
Mobil in Portsmouth (1980 Woodbury Ave)
1980 Woodbury Ave, Portsmouth, New Hampshire,
$3.59
Sep 05, 2025
0¢ Cashback
Find Cheap Gas Prices By State
Click on the state to view the State details
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.