Kirkland Signature · Pantry

Who makes Kirkland Signature Organic Unbleached All-Purpose Flour, 10 lb (2-count)?

Rumored Community reporting only, unverified

Citable fact

Kirkland Signature Organic Unbleached All-Purpose Flour, 10 lb (2-count) is rumored (unverified) to be made by Central Milling; no tier 1–5 evidence supports the claim as of August 17, 2026.

Verified August 17, 2026

The common claim vs. the evidence

What’s commonly claimed, and what the evidence supports

The widely repeated claim is that Central Milling, the Utah miller founded in 1867, makes Kirkland Signature Organic Unbleached All-Purpose Flour, and some roundup articles go further, saying Central Milling's own website admits it. The circumstantial case is strong but not conclusive, and that second part is a misread. Costco previously sold flour openly branded "Central Milling," then replaced it in the same bins with the Kirkland Signature organic bag around late 2022; bakers who tracked the switch report the flour changed little, and the Kirkland package still carries Utah organic certification. But the Kirkland packaging does not name Central Milling, and Central Milling's FAQ "wink wink" actually points customers to Whole Foods and Safeway, not Costco, for its retail flour. So Central Milling is rumored (unverified) to be the miller behind the current Kirkland organic flour, on strong circumstantial grounds, but no company statement, label, or regulatory record confirms it.

The sources

Evidence & sources

Each source is graded on the six-tier evidence rubric, where tier 1 is strongest. Sources are archived, so a citation still works if the original page moves or goes behind a paywall.

Tier 6 The Fresh Loaf (community forum) Central Milling Product and Packaging Name Change at Costco Published December 23, 2022 · accessed July 5, 2026

Baker-community account of the rebrand (tier 6): "The Organic AP Flour in the 'Bin' at Costco may now look different label wise but in fact the flour is little changed from the previous 'Central Milling' Branded AP Flour sold by Costco. The 'newly labelled product' is part of a private label program being carried out by Central Milling for Costco and remains certified 'Organic' by the State of Utah." Key caveat, same post: "Print on the packaging does not mention anything about Central Milling as a source agent."

Archived snapshot ↗ Original ↗

Tier 6 Food Republic Costco's Organic Flour Is Likely Manufactured By Central Milling Published · accessed July 5, 2026

Roundup article asserting (hedged in its own headline, "Likely Manufactured By") that Central Milling mills the Kirkland organic flour, citing that the Kirkland package is "certified organic by the Utah Department of Agriculture and Food." Its further claim that Central Milling's own FAQ hints Costco carries its flour is a misread: the FAQ 'wink wink' actually names Whole Foods and Safeway, not Costco (verified against the Central Milling FAQ, archived https://web.archive.org/web/20250810222628/https://centralmilling.com/faqs-flour-grains/ ). Tier 6.

Archived snapshot ↗ Original ↗

Frequently asked

Does Central Milling make Kirkland Signature organic flour?

It is rumored (unverified) to. Costco used to sell flour openly branded Central Milling, then swapped it for the Kirkland Signature organic bag in the same bins around late 2022, and bakers who followed the change say the flour barely changed and still carries Utah organic certification. That points to Central Milling, but the Kirkland package does not name the mill, and no company statement or regulatory record confirms the link, so it stays a strong rumor rather than a documented fact.

Does Central Milling's website say it supplies Costco?

Not for flour. A popular claim holds that Central Milling's FAQ hints (with a "wink wink") that its organic all-purpose flour is the one sold at Costco. The actual FAQ text points readers to Whole Foods and Safeway for that flour, not Costco; Central Milling only mentions Costco separately, when explaining why it stopped stocking its pancake mix there. So its own site does not confirm the Kirkland flour connection.

Is the regular (non-organic) Kirkland all-purpose flour also from Central Milling?

This record covers the organic unbleached all-purpose flour, the product tied to Central Milling. Costco's conventional Kirkland Signature all-purpose flour is a separate item, and the Central Milling evidence here does not extend to it; it is sometimes rumored to come from a large conventional miller such as Ardent Mills, but that is not documented and is out of scope for this organic-flour record.

Prefer the name brand? King Arthur Organic All-Purpose Flour The closest name-brand equivalent to this Kirkland Signature product.

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