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Costco Merrillville Gas Prices – 79th Ave

Regular · today
$3.769▼ −$0.030
Premium · today
$4.829▼ −$0.010

USD per gallon · Last updated October 31, 2026 · This station does not sell diesel

1310 E 79th Ave, Merrillville, IN 46410-5768 · Open in Maps ↗

30-day range

where today sits
  • Regular$3.769 today · avg $3.666
    $3.489 low$3.899 high
  • Premium$4.829 today · avg $4.680
    $4.489 low$4.899 high

Price history at Merrillville

Last 30 days · USD per gallon
RegularPremium

Regular: $3.599 on Oct 2 to $3.769 on Oct 31, low $3.489, high $3.899. Premium: $4.599 on Oct 2 to $4.829 on Oct 31, low $4.489, high $4.899.

Last updated October 31, 2026. Prices are collected once daily and can lag same-day changes at the pump.

Today’s price in context

At $3.769 for Regular, Merrillville is the 4th most expensive of 9 Costco gas stations in Indiana today, $0.050 above the Indiana average of $3.719.

None of the 5 nearest Costco stations is cheaper today.

vs the US average
$0.506 below, at $4.275
Premium over Regular
$1.060 — the Indiana median is $1.030
Regular over the last 30 days
up $0.170
Days the price changed
15 of 30 reported days
Latest day at the 30-day low
October 8, 2026, at $3.489
15-gallon fill
$56.54, $4.20 more than at the 30-day low

Merrillville is located at 1310 E 79th Ave, Merrillville, IN 46410-5768, in Indiana. 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

Merrillville 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.

Merrillville 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 Merrillville

  1. 1Orland ParkOrland Park, IL · 29.2 mi$4.739Regular
  2. 2Bedford Park Business CenterChicago, IL · 29.3 mi$4.459Regular
  3. 3Chicago South LoopChicago, IL · 32.1 mi$4.899Regular
  4. 4North Riverside ILNorth Riverside, IL · 35.7 mi$4.599Regular
  5. 5Lincoln ParkChicago, IL · 36.3 mi$5.199Regular

Distances are straight-line.

Cities near Merrillville

At this location

Warehouse opened
October 2001
Warehouse phone
(219) 641-6400
Pumps open early
4 hours before the warehouse on weekdays

Also at this warehouse: a food court, a pharmacy, an optical department, a hearing aid center and a tire center.

Frequently asked questions

How much is gas at Costco Merrillville today?

As of October 31, 2026: Regular $3.769 and Premium $4.829 per gallon. Prices are collected once a day, so the pump can differ.

What time does the Costco Merrillville 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 Merrillville gas station sell diesel?

No — this station sells Regular and Premium, and has reported no diesel price in the last 30 days.

Is Costco Merrillville cheaper than the average Costco station in Indiana?

No — at $3.769, Regular here is $0.050 above the average Costco price in Indiana, $3.719.

Where is the Costco Merrillville gas station?

At 1310 E 79th Ave, Merrillville, IN 46410-5768. 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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