Who makes Kirkland Signature Pepperoni Pizza, Thin Crust, 19.05 oz, 4-count?
As of August 3, 2026, the manufacturer of Kirkland Signature Pepperoni Pizza, Thin Crust, 19.05 oz, 4-count is Palermo Villa, Inc., per on-label, first-party, or executive statement evidence.
The common claim
What’s commonly claimed, and what the evidence supports
The popular answer is Palermo's, and the evidence still points there — even though food-media pieces have speculated the partnership ended. Palermo's role became public in a 2012 labor dispute, when the Palermo Workers Union described its striking Milwaukee members as workers 'who make Costco's Kirkland-brand frozen pizza,' and the boycott expressly covered 'private label brand frozen pizza produced by Palermo, including Costco's Kirkland brand.' Costco reworked the pizza's crust and packaging around 2023, prompting guesses that a new maker had taken over, but as of a December 2025 capture, Costco's own product catalog still names Palermo Villa, Inc. (the corporate entity behind Palermo's) as the manufacturer of the Kirkland Signature Pepperoni Pizza. The attribution is confirmed on Costco's own naming plus the documented 2012 link, with the caveats kept on the record: the catalog field can name a supplier-of-record, and the independent documentation predates the circa-2023 reformulation — both flagged for re-verification.
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 4
Costco's product-detail page embeds catalog JSON whose manufacturer field, on the object titled 'Kirkland Signature Pepperoni Pizza, 19.05 oz, 4-count' (description 'Product of the USA.'), reads "mfName":"PALERMO VILLA INC" (verified in the 2025-12-19 Wayback capture; costco.com blocks automated fetch). Palermo Villa, Inc. is the corporate entity behind the Palermo's brand (Milwaukee, WI). Because Costco's manufacturer field can name a supplier-of-record rather than the physical plant, it grades probable.
Tier 4
Independent documentation of the Palermo-Kirkland link during the 2012 labor dispute: 'Palermo Pizza Factory workers in Milwaukee who make Costco's Kirkland-brand frozen pizza have been on strike since June 1, 2012,' and the national boycott 'covers ... private label brand frozen pizza produced by Palermo, including Costco's Kirkland brand.' On-the-record naming from the workers' union; predates Costco's circa-2023 reformulation of the pizza.
Tier 6
Represents the 'maybe it changed' narrative this record addresses: it recounts the 2012 strike that exposed Palermo's, then notes the pizza was later revamped and there is 'not much evidence, especially in recent years' identifying the current producer. Tier 6 food media; the current value in Costco's manufacturer field (Palermo Villa) plus the 2012 documentation carry the attribution.
Frequently asked
Who makes Kirkland Signature frozen pizza?
Did Palermo's stop making Costco's pizza?
Is Kirkland pizza the same as Palermo's own frozen pizza?
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