Kirkland Bourbon: Who Makes It and Which Bottle to Buy

Who actually makes Kirkland Signature bourbon

This shortlist is built from published specs, label disclosures, and named third-party reviews rather than firsthand tasting — you won't find invented "on the nose" notes here, just what's verifiable and what reviewers have gone on record saying.

Costco doesn't put out press releases naming its bourbon supplier, but the label does most of the talking, and multiple spirits outlets have confirmed the sourcing independently. Kirkland Signature's Kentucky bourbons are widely reported — by Tasting Table, The Whiskey Shelf, and Breaking Bourbon among others — to come from the Barton 1792 Distillery in Bardstown, Kentucky, which has operated continuously since 1879 and is owned by the Sazerac Company. The Barton connection isn't hidden; it's printed right on the back label, and the "distilled in Kentucky" and "bottled by" language on Kirkland bottles lines up with how Barton discloses its contract-bottling work for other private labels. Sazerac also owns Buffalo Trace, but the Kirkland Kentucky lineup is consistently traced to Barton 1792, not Buffalo Trace itself.

Why does a house brand get juice from a 145-year-old working distillery instead of a flavoring lab? Volume and relationship. Costco's private-label spirits program buys enormous quantities, and legacy distilleries like Barton have the barrel inventory and bottling capacity to supply that kind of order while still running their own branded lines — 1792, Very Old Barton, Ten High — alongside it.

The current Kirkland whiskey lineup

As of the most recent shelf checks, Costco's Kirkland Signature bourbon shelf typically holds three Kentucky bourbons, all traced to Barton 1792:

• Kirkland Signature Bottled-in-Bond Bourbon — 100 proof, 1 liter, recent shelf prices around $24–$28 depending on the warehouse and time of year.
• Kirkland Signature Small Batch Bourbon — 92 proof, 1 liter, recent shelf prices around $19–$21.
• Kirkland Signature Single Barrel Bourbon — 120 proof, 1 liter, recent shelf prices around $30–$33.

A quick correction on the premise here: the Small Batch bottling runs 92 proof, not 103 — that's a common mix-up online, possibly with a barrel-proof release from another brand. All three current Kirkland bourbons ship in 1-liter bottles, not 750ml, which matters when you're comparing price per standard 750ml pour (see the table below). Some warehouses have also carried a Kirkland Kentucky Straight Bourbon at 92 proof in a 1.75L handle, and Costco's spirits selection includes Kirkland-branded Canadian whisky and a blended Scotch in some regions — but availability of those varies far more by warehouse and state than the three Kentucky bourbons above, so verify locally before planning a trip around them.

What "bottled-in-bond" actually guarantees

The Bottled-in-Bond Act of 1897 is one of the oldest consumer-protection laws in the country, and it still means something specific today. To carry the label, a whiskey must:

• Be the product of one distillation season (either January–June or July–December) at a single distillery
• Be made by one distiller
• Be aged at least four years in a federally bonded warehouse
• Be bottled at exactly 100 proof

That's a legal floor, not a taste promise — but it does guarantee a minimum age statement and a single-distillery, single-season pedigree that a lot of bourbons twice the price don't disclose at all. Kirkland's Bottled-in-Bond meets that standard, which is part of why it gets cited so often as one of the better value plays in the bourbon aisle.

Comparison table

The shortlist verdict

For a house pour — the bottle you keep on the counter for guests, an Old Fashioned, or just a pour after dinner — the Bottled-in-Bond is the pick. It has the legal pedigree (single distillery, four-year minimum age, 100 proof) spelled out on the label, and reviewers consistently describe it as punching above its price against other entry-level bonded bourbons.

For a value cocktail base — where proof and subtlety matter less because you're mixing — the Small Batch at 92 proof is the one to stretch across a party. It's the cheapest per-ounce of the three and holds up fine in a Manhattan or a Whiskey Sour where sweeteners and bitters do a lot of the work.

For the person who wants proof — literally, someone chasing more intensity per pour — the Single Barrel at 120 proof is the outlier of the lineup. Single-barrel releases vary bottle to bottle by nature, so expect some inconsistency between purchases; that's part of the category, not a flaw specific to Kirkland.

Check availability at Bourbon Concierge if you want to compare the Bottled-in-Bond against other bonded bourbons before you commit a warehouse trip to it.

Costco caveats worth knowing before you drive there

Not every Costco warehouse stocks all three bourbons, and some don't carry spirits at all — liquor sales at Costco vary by state, and availability and shipping are determined by the retailer at checkout, whether that's Costco's own site or a specialist retailer. Call your local warehouse or check its posted inventory before making a special trip, especially for the Single Barrel, which tends to be the first of the three to sell out or rotate off shelves.

If your Costco is dry or out of stock

If liquor sales aren't available at your local warehouse, or the shelf is simply empty, a same-money alternative shortlist gets you a comparable bottle without the trip:

• 1792 Small Batch — recent shelf prices around $30, and it comes from the same Barton 1792 Distillery lineage as Kirkland's bourbons, just under its own name.
• Evan Williams Bottled-in-Bond — recent shelf prices around $20, another Bottled-in-Bond Act bourbon at 100 proof with a long track record as a value pick.
• Old Forester Signature 100 Proof — recent shelf prices around $27–$30, a 100-proof bourbon frequently recommended alongside Kirkland's Bottled-in-Bond in value comparisons.

See price at Bourbon Concierge to check current availability on any of these without waiting on a Costco run — and if you're building out a broader lineup rather than chasing one bottle, our top picks rounds up the shortlist across price points.

Serving it right

Whatever you pour, the glass changes what you taste. A tulip-shaped glass concentrates aroma better than a rocks glass, which matters more with a 120-proof pour than a 92-proof one. If your glassware collection is still a couple of mismatched rocks glasses, The Wine Enthusiast carries dedicated whiskey glassware and decanters worth a look before your next tasting session.

Pairing bourbon with something to eat alongside it also changes the evening — a bourbon-and-snacks pairing set is a low-effort way to turn a bottle into an occasion without overthinking the menu.

If you're building out a home bar rather than buying one bottle at a time, it's worth reading up on what a bourbon subscription actually costs per bottle before deciding whether a club or one-off purchases like these make more sense for your budget. And if Kirkland's bonded bourbon has you curious about the entry-level end of collecting more broadly, a starter guide for someone new to bourbon covers the next few bottles worth adding.

FAQ

Is Kirkland Signature bourbon actually made by a real distillery? Yes. It's widely reported and confirmed by the label itself that Kirkland's Kentucky bourbons come from the Barton 1792 Distillery in Bardstown, Kentucky, owned by the Sazerac Company. It isn't a mystery blend from an unnamed source — the distillery credit is printed on the bottle.

What does "bottled-in-bond" mean on a whiskey label? It's a legal designation under the Bottled-in-Bond Act of 1897 requiring the whiskey to be made by one distiller, at one distillery, in a single distillation season, aged at least four years in a federally bonded warehouse, and bottled at exactly 100 proof. It's a guarantee of provenance and minimum age, not a flavor promise.

Why are Kirkland bourbons sold in 1-liter bottles instead of 750ml? Costco's private-label spirits commonly use 1-liter bottles across its bourbon lineup, which is part of why the per-bottle price looks so low compared to 750ml bottles on a regular liquor store shelf. Comparing price per 750ml-equivalent, rather than per bottle, gives a fairer read against other brands.

Can I get Kirkland bourbon shipped if my Costco doesn't sell liquor? Availability and shipping are determined by the retailer at checkout, and that varies significantly by state and by warehouse — some states restrict liquor sales at Costco entirely. If your local warehouse can't sell you a bottle, a comparably priced alternative from an online specialist retailer is often the simpler path.

Is Kirkland Signature Single Barrel worth the higher proof and price? Reviewers note it delivers a more concentrated, higher-proof profile than the other two Kirkland bourbons, with the batch-to-batch variation that's typical of single-barrel releases generally. It's best suited to someone who specifically wants a stronger pour rather than someone looking for the mildest option on the shelf.

Bourbon and other spirits content on this site is intended for readers 21 and older. Drink responsibly, and never drink and drive.