Gas Prices in Sioux City, IA Today

Updated April 5, 2026 — Prices updated regularly from EIA data

$3.10

Average Regular Unleaded — Sioux City, Iowa

Current Gas Prices in Sioux City

The average cost to fill up in Sioux City, Iowa is $$3.10 per gallon for regular gas right now. Compared to the national average, Sioux City drivers are paying $0.89 below the national average, reflecting local market dynamics.

Fuel TypePrice / GallonGradeTrend
Regular Unleaded$3.1087 octane▲ Rising
Mid-Grade$3.5889 octane▲ Rising
Premium$3.8791-93 octane▲ Rising
Diesel$4.20N/A▲ Rising

Price Comparison

Sioux City Average
$3.10
Regular Unleaded
Iowa State Average
$2.88
$0.22 above the Iowa average
National Average
$3.99
$0.89 below the national average

About Gas Prices in Sioux City

The Sioux City fuel market reflects Iowa's broader pricing environment while adding local demand characteristics. With a growing population and rising commuter traffic, demand pressure in Sioux City is steady. Warehouse club stations and discount brands regularly beat street prices by 10-20 cents per gallon.

Gas Prices by Brand in This City

Estimated prices based on brand modifiers. Sorted cheapest to most expensive.

CHEAPEST
Costco
$2.95
Speedway
$3.07
Circle K
$3.08
Sunoco
$3.11
Marathon
$3.12
BP
$3.14
Mobil
$3.15
Exxon
$3.16
Shell
$3.18
Chevron
$3.20

Fuel Type Prices in This City

Regular Unleaded
87 octane
Premium Gasoline
91-93 octane
Diesel Fuel
N/A

Gas Prices in Nearby Cities

Sioux Falls$3.03Omaha$3.10Bellevue$2.76
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Frequently Asked Questions

Sioux City and surrounding cities typically track similar fuel prices given shared supply infrastructure. Differences of 5-15 cents between nearby cities are common depending on local tax differences and competition levels.
A 10-cent savings on 15 gallons equals $1.50. If the cheaper station is 5 miles away and your car gets 25 MPG, the detour costs about 0.4 gallons. Savings above 15 cents per gallon are consistently worth moderate detours.
Most states have price gouging statutes that activate during declared emergencies. Outside of emergency declarations, gas stations set prices based on market conditions. Normal price variation between stations is competition, not gouging.
GasBuddy is the most comprehensive option for Sioux City with millions of user-reported prices updated in real time. Waze integrates gas prices into navigation. GetUpside/Upside offers cashback on purchases at qualifying stations.
Each gallon of gas in Sioux City, Iowa includes 18.4 cents in federal excise tax plus {tax} cents in Iowa state fuel tax — a combined {totalTax} cents per gallon. On a 15-gallon fill-up, you pay ${taxTotal} in fuel taxes alone.

Related Gas Price Pages

Gas Prices in IowaCheapest Gas in Sioux CityGas Prices Near Sioux CityCompare All StatesRegular Unleaded in Sioux CityPremium Gasoline in Sioux CityDiesel Fuel in Sioux CityShell - Sioux CityExxon - Sioux CityBP - Sioux CityChevron - Sioux CityMobil - Sioux CityGas Prices in Sioux FallsGas Prices in OmahaGas Prices in Bellevue