IN-N-OUT BURGER #144
4310 ONTARIO MILLS, CA 91761
Last inspected May 20, 2026 · score 97
Official source: San Bernardino County Public Health (dph.sbcounty.gov) · All data sources
Excellent. Top marks — the latest inspection found no serious issues, or few enough to earn the health department's best band.
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The record, in plain English
San Bernardino County Public Health reports one inspection on record for IN-N-OUT BURGER #144, from May 2026.
No violations were recorded at the most recent inspection.
49% of the 17,746 San Bernardino establishments CleanPlate tracks currently share this standing.
Every sentence above is computed directly from the official record — CleanPlate adds no opinions. How our grading works →
Inspection history
May 20, 2026
Score: 97
A
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Source: San Bernardino County Public Health (dph.sbcounty.gov). Data shown unmodified from the official government record. CleanPlate is an independent service, not affiliated with any government agency. See something wrong? Report a data issue.