If you have eaten out in Seattle, you have walked past the sign a hundred times: a small placard near the door with a cartoon face on it, somewhere between beaming and grimacing. It is not decoration. It is King County's official food safety rating, and it encodes more information than most diners realize — and hides a few things too.

Unlike New York's letter grades or Los Angeles County's numeric scores, King County's system is not a snapshot of one inspection. It is a rolling average, and that single design choice changes what the sign on the door actually tells you.

The four-tier placard system

Every rated food business in King County gets one of four ratings, each with its own emoji-style face:

The first thing to internalize is that "Okay" is not a failing grade. If a business is permitted and open, it meets the county's minimum standards. "Okay" means exactly that: minimum met, nothing more. Whether that is good enough is a judgment call the county deliberately hands back to you.

The second thing: unlike the other three, "Needs to improve" is not calculated from an average. It is a status flag. A business lands there because of a recent closure or a pattern of failed follow-ups — an event, not a trend line.

How the score behind the face is actually calculated

King County inspectors assign points for unsafe food handling practices. Lower is better — zero is a clean inspection. The rating then averages recent routine inspections, and how many get averaged depends on the establishment's risk category.

The county sorts businesses into three risk categories based on how much cooking and handling happens on site:

For Risk 3 establishments, the rating is the average of the last four routine inspections. The published grade breaks are: Excellent at 0.00–3.75, Good at 3.76–16.25, and Okay at 16.26 and above.

For Risk 1 and 2 establishments, the rating averages up to the last two routine inspections, and the bar is much tighter: Excellent requires a flat 0.00, Good runs 0.01–5.00, and Okay is 5.01 and above.

That asymmetry matters. A coffee stand rated "Good" may have picked up a single minor point once. A restaurant rated "Good" could be averaging a dozen points across four visits. The same word on the placard means very different things depending on what kind of business you are standing in front of.

Why a rolling average can mask a bad inspection

Averaging is the system's biggest feature and its biggest blind spot.

The feature: one unlucky Tuesday does not brand a well-run kitchen. Inspection scores are noisy — inspectors vary, timing varies, a walk-in cooler fails on the wrong morning. Averaging four visits smooths that noise and rewards businesses that are consistently careful rather than occasionally lucky.

The blind spot: a serious recent problem can sit underneath a comfortable rating. A Risk 3 restaurant with three near-perfect inspections and one bad one can still average into "Excellent" or "Good" territory. The placard is showing you the trend. It is not showing you what happened last month.

There is also a lag issue. Routine inspections are not frequent, so the four visits being averaged may span a long stretch of time. Ownership changes. Kitchen managers leave. A rating earned under a previous crew can outlive the crew.

None of that makes the placard useless. It makes it a starting point rather than a verdict. The fix is the same in every city: read the underlying inspection record, not just the summary.

Seattle vs. NYC vs. LA: three philosophies of disclosure

Three of the most-copied restaurant disclosure systems in the country answer the same question in three incompatible ways.

Practical consequence: you cannot compare these numbers across cities. A score of 12 is a middling result in King County, an A in New York, and would be a failing grade in Los Angeles. Anyone quoting a raw "restaurant score" without naming the jurisdiction is quoting noise.

The philosophies differ too. New York optimizes for immediacy — this is how the kitchen looked when we walked in. Los Angeles optimizes for legibility — everyone understands a letter. King County optimizes for fairness to operators — one bad day should not sink you — at the cost of some immediacy for diners.

What the placard does not cover

The rating system covers most permitted food businesses in King County: restaurants, coffee shops, bars, grocery store delis, catering operations, meat and fish vendors, and — since a 2025 expansion — mobile food vendors like food trucks and stands.

It does not cover farmers market vendors, food vendors at temporary events, grocery stores themselves, or school food services. If you are eating from one of those, there is no placard to read, though inspection records may still exist.

Businesses are required to post the sign within five feet of the main public entrance, or in another conspicuous spot approved by their inspector. Failing to post correctly carries escalating penalty fees tied to a percentage of the business's annual permit fee. So if you cannot find a placard at a rated establishment, that absence is itself information worth noticing.

How to actually check before you eat

A useful two-minute habit:

King County publishes all of this. Every routine inspection, every violation cited, every follow-up visit is public record. Most people never look because the records are scattered across county portals with interfaces built for compliance staff rather than diners.

That gap is the whole reason FoodCodeScout exists: pull the public inspection data from a jurisdiction, put the full history for a specific address in front of a person in a few seconds, and let them decide. The placard tells you the trend. The record tells you what happened.

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About the author — Rick Jenkins is the founder of AI Revenue Forge. ARF builds vertical-specific AI virtual receptionists for service businesses in HVAC, dental, medspa, real estate, home health, credit repair, and pawn shops. Headquartered in Charlotte, NC. Part of Jenkins Worldwide Enterprises.