Dec 5, 2020

3 min read

COVID in King County, charts per city (Dec 3, 2020)

Here are charts for King County cities. These charts rely on the King County outbreak summary dashboard together with population estimates from the JC_Rook’s daily spreadsheet report on King County.

I have produced charts of new cases of COVID-19 as

  • 7-day trailing averages
  • scaled to cases per 100k.

Google sheets link

All of my charts and tables are shared in a public Google sheets document:

King County

King County appears to have dropped below the Washington State average since the last few days of November.

King County vs Washington State (dotted line)


Seattle itself is well below the county average.

Seattle trailing average of new cases

King County cities ranked as of 12/3/2020

  • Only cities with population > 5k
  • All of USA, King County, Yakima County in June, and King County at the last recent peak are included as reference points.
Lakeland North
Lakeland South
Des Moines


I chose these the average and 100k transformations to help readers identify how COVID-19 is trending in each chart and to allow readers to make fairly direct comparisons city-to-city.

These charts compare each city against the entire county. This allows us to say whether or not a city has generally been doing better or worse than the rest of the county. I am using the trailing averages and trend line comparison to mitigate the way that testing patterns have changed since the early months.

I generally refrain from speculation about the reasons for each county’s performance in this post and concentrated on simple language: above vs below average and a month to month comparison.