Cheapest Grocery Store in 2026: 9 US Chains, Ranked

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Everyone has a store they’ve always shopped at. But loyalty doesn’t guarantee the lowest bill. The cheapest grocery store in 2026 depends on what’s in your cart, your household size, and which chains are near you. Aldi wins on most basket comparisons, but Costco beats it on per-unit bulk price, and Walmart beats it when you need name brands.

This article ranks the 9 US grocery chains that Mittsy supports by price using a standardized basket, breaks down what makes each one cheap or expensive, and explains a two-store strategy that typically cuts a weekly grocery bill more than picking any single chain.

The cheapest grocery store for most US households is Aldi. A 2026 comparison of 109 directly comparable items found Aldi 15.3% cheaper than Kroger and 5.8% cheaper than Walmart. For a family spending ~$150/week, that gap is ~$500-1,100 per year in savings. Costco wins on bulk staples per unit but needs a ~$65/year membership and large-format packs.

How Grocery Store Price Rankings Work

Grocery store price comparisons produce different results depending on the basket. A study comparing 15 store-brand items in one city ranks stores differently than a study comparing 109 national brands across 20 cities. The methodology matters as much as the conclusion.

A 2026 US Grocery Price Index built from 29,519 real shelf prices across 1,704 stores put each chain on a 100-point scale where lower scores = cheaper shopping. Aldi scored 88, Walmart 92, Costco 95, Kroger 101, and Publix 110. Consumer Reports separately found Aldi 8.3% cheaper than Walmart on average across six US cities in 2026. Trader Joe’s isn’t included in that index because it doesn’t make shelf prices publicly accessible; regional surveys consistently place it 5-10% above Aldi but below standard supermarkets. H-E-B, Target, and Whole Foods were also absent from the index; comparable regional surveys put H-E-B around 97-99 (for Texas shoppers), Target around 103-105, and Whole Foods at ~120-125. Those estimates carry more uncertainty than the indexed chains. The through-line across all studies: Aldi leads on everyday staples, Walmart leads on name-brand convenience, and Costco leads when you actually use the bulk pack size before it goes bad.

The 9 Cheapest Grocery Stores, Ranked

The table below uses the GroceryChop US Grocery Price Index where available and regional survey estimates (marked ~est.) for the remaining chains. Lower = cheaper.

Store	Price Index	Best for
Aldi	88	Private-label staples
Walmart	92	Name brands, one-stop shop
Costco	95	Bulk staples with high turnover
H-E-B	~97 ~est.	Texas shoppers; competitive produce
Kroger	101	Branded goods, fuel rewards
Target	~103 ~est.	Convenience + Circle discounts
Trader Joe’s	~107 ~est.	Private-label specialties
Publix	110	BOGO deals, service
Whole Foods	~122 ~est.	Specialty and organic items

Aldi

About 90% of Aldi’s products are its own private label. No slotting fees, no name-brand premiums, and a stripped-back layout that needs fewer staff than a standard supermarket. GroceryChop estimates households switching from an average supermarket to Aldi save ~$1,500-3,000 per year. The trade-off: limited selection, no fresh-cut meat counter at most locations, and no brand-name options in most categories.

Mittsy users who set Aldi as one of their two stores get an aisle-sorted grocery list split for each location. With Mittsy Pro, estimated prices based on typical Aldi shelf costs appear on every line.

Walmart

Walmart’s buying power makes it the cheapest single option for name-brand items: cereals, condiments, cleaning products. For private-label staples, it runs about 5-8% higher than Aldi. The main advantage is selection: a single Walmart trip covers the whole list, which matters when you shop one store per week.

Costco

Costco’s per-unit prices are among the lowest for the bulk staples it carries. A 5 lb bag of bone-in chicken thighs or a 25 lb bag of rice runs significantly cheaper per ounce than the comparable unit at Walmart or Kroger. The catches: a ~$65/year Gold Star membership, pack sizes that require a large household or a freezer, and food waste risk on perishables. Families cooking 5+ nights per week usually recoup the membership fee within a few months. Smaller households often find Walmart cheaper in practice.

H-E-B

H-E-B operates primarily in Texas and ranks among the most competitive regional chains in the US. Its private-label line runs close to Aldi pricing on many staples, and produce pricing consistently comes in below Kroger or Publix equivalents. Texas shoppers often find H-E-B competitive with Walmart on a 25-item basket comparison.

Kroger

Kroger is mid-range on everyday price but has a solid fuel-rewards program. Regular drivers who redeem points at the pump (~$0.10-0.30 per gallon) see meaningful savings on effective grocery cost. Without fuel redemptions, Kroger runs about 15% above Aldi and 9% above Walmart on a comparable basket. The store brands (Simple Truth and Private Selection) narrow the gap on many categories.

If you want a week of dinners priced specifically at Kroger, the Kroger meal plan breaks it out dinner by dinner with estimated costs.

Target

Target sits near Kroger on most basket comparisons. Its Circle program gives 5% back and runs regular category-specific discounts. At regular shelf prices alone, most surveys place Target about 3-5% above Kroger. Regular Circle users often close that gap on pantry staples.

Trader Joe’s

Trader Joe’s sells mostly its own private-label line at prices below standard supermarkets but above Aldi. On comparable items — eggs, pasta, canned beans, milk — it typically runs 10-15% more than Aldi. Most shoppers use it alongside a main store rather than as a replacement, given the distinct selection.

Publix

Publix prices run higher than the national average, offset by an aggressive BOGO (buy one, get one) program. Stock up during BOGO weeks on items you use regularly and the per-unit cost can match Kroger or better. At regular price, most basket comparisons put Publix 15-20% above Walmart.

Whole Foods

Whole Foods is the most expensive chain in this group. Amazon Prime members get 10% off select items and access to weekly deeper discounts, which can make specific purchases competitive. Without Prime, Whole Foods typically runs ~$25-35 more than Walmart on a 25-item staples basket in most US cities.

How to Pick the Cheapest Grocery Store for Your Cart

The cheapest grocery store overall isn’t always cheapest for your household. It depends on what you buy most often.

If your cart is mostly private-label staples — pasta, canned goods, dairy, eggs — Aldi wins most weeks. If you need specific name-brand items your family won’t trade out, Walmart closes the gap considerably. If you cook in volume and reliably use large packs before they go bad, a Costco membership pays off.

The most common mistake is choosing a store based on its headline advantage. Aldi’s savings disappear when you need name brands it doesn’t carry. Costco’s bulk prices become food waste if a 3 lb bag of salad greens spoils by Thursday.

Splitting Two Stores Beats Any Single One

Shopping two stores in the same week often saves more than committing to one. Buy Aldi’s private-label staples — the items where it saves 15-20% — and buy name brands or large packs at Walmart or Costco. That split typically runs ~$10-20 cheaper per week than shopping either chain alone.

Mittsy supports up to two stores and splits the grocery list by location automatically. When you set Aldi and Walmart as your two stores, the aisle-sorted list shows which items go to each trip. With Mittsy Pro, estimated prices appear on every ingredient line against a weekly budget bar, so you can see the projected total before you leave the house. Prices are typical-shelf estimates, not live store data.

The Aldi meal plan and Walmart meal plan each show a full week of dinners priced at their respective stores — a useful starting point for testing the two-store split.

Frequently Asked Questions

Is Aldi really cheaper than Walmart? Yes, on most directly comparable items. A 2026 comparison of 109 items found Aldi about 5.8% cheaper than Walmart. The gap is larger on private-label staples (eggs, pasta, canned goods) and smaller on categories where Walmart stocks brands Aldi doesn’t carry at all.

Is Costco cheaper than Aldi? Costco is cheaper per unit on the bulk items it carries. But the ~$65/year membership fee and large pack sizes mean the savings depend on your household. Families that regularly use bulk packs and can freeze proteins often come out ahead with Costco annually. For 1-2 person households, Aldi usually wins.

Which grocery store has the best produce prices? Aldi and H-E-B (for Texas shoppers) consistently rank lowest for produce in regional surveys. Aldi’s produce selection is more limited than larger chains, but unit prices on common vegetables — carrots, broccoli, peppers, onions — typically run 20-30% below Kroger or Publix.

Does switching stores actually save that much money? The structural price gap between Aldi and an average supermarket runs 15-25% year-round on comparable items. For a household spending ~$150/week, switching from Kroger to Aldi saves roughly ~$500-1,100 per year based on 2026 basket comparisons. Sales and coupons help, but they don’t close a 15% structural gap consistently week over week.

Knowing which store is cheapest is one piece of keeping a grocery budget under control. The other is planning the week before you shop, so you buy exactly what you need at the right store. Mittsy handles both: it builds the plan around your stores and shows what the week will cost before you go. Download it free on the App Store or Google Play.