Local Case Counts

We update confirmed and probable case numbers for the county and by city weekly. Depending on when you check the tables, numbers may vary from those reported by the state Department of Health. Because new reports of positive tests come in and disease investigations are done throughout the week, the numbers vary based on when the data is run. Please check the "Data as of" or "Last Updated" note to confirm the most current number. 

Case Count (cumulative since Jan. 2020) Last Updated: 2:30 p.m. 10/25/21 Change from 10/18/21
Confirmed  58,232 +1,477
Probable 6,896 +252
Deaths 753 +9*

Note: “Probable” cases include close contacts of a confirmed case who become symptomatic, positive antigen test, or positive serology/antibody test AND a credible history of COVID-like illness. For full definition of a "Probable" case, please see the Department of Health guidance

** Based on what is reported to the Health District daily, and a weekly reconciliation with state Department of Health data. 

To better align with the Washington State Department of Health’s data dashboard, the Snohomish Health District has incorporated positive antigen results into case reporting.

Effective April 19, the weekly case count update now includes a bar chart with total positive cases for the week broken into molecular and antigen cases. The rolling 2-week case rate has also been updated to incorporate antigen cases going back in time. This recalibration has resulted in a slight increase in rolling 2-week case rates.

Antigen test results are still positive cases, but conducted through rapid tests rather than molecular testing doing at laboratories. This addition of antigen-positive cases is not what’s driving the observed increase in the rolling 2-week COVID rate. The overall increase in case rates is due to increased transmission. Only 18% of confirmed cases over the past month are antigen-positive cases. 

Hospital Data

  Last updated 10/27/21 Change from 10/26/21 
COVID Positive
69 +1
COVID Ventilated 23 +1
Deaths 1 +1

Hospitalization data is updated daily on weekdays. Numbers represent COVID-positive patients currently hospitalized in Snohomish County.

COVID-19 Cases Reported in Snohomish County by Date (Updated Weekly)

case count by date

Snohomish County COVID-19 Case Rate per 100,000 for 2-week Rolling Period (updated Mondays)

case counts_dec 28

Snohomish County COVID-19 Related Deaths by Week (updated weekly)

Snohomish County COVID-19 Related Deaths by Week

Snohomish County Longterm Care Facility Associated COVID-19 Cases by Onset Date (updated weekly)

Snohomish County Longterm Care Facility Associated COVID-19 Cases by Onset Date


hospital admissions


covid testing by week 4-5

COVID rate and heat maps (click an image to view larger)

These maps are updated every two weeks. To see previous versions, see last section on our Reports page.

Case count heat map (September 19, 2021 - october 2, 2021)

Heat Map 10.18

Cases heat map (January 2020 - october 2, 2021) 

Heat Map to Date 10.18

Case Rates per 100,000 by ZIP (september 19, 2021 - october 2, 2021) 

ZIP Code Case Rates 10.18

COVID-19 Vaccinations by ZIP (As of october 10)

thumbnail_ZIP Code Init Vacc 10.10

Case Count by City, cumulative since Jan. 2020 (last updated 10/25/21)

City               Total     Survived**     
Arlington 4,431 3,825
Bothell* 4,487 4,075
Brier 354 325
Darrington 153 124
Edmonds 3,419 3,044
Everett 14,777 13,553
Gold Bar 376 338
Granite Falls 954 830
Index 13 11
Lake Stevens 4,437 3,975
Lynnwood 8,057 7,401
Marysville 7,398 6,595
Mill Creek 1,211 1,085
Monroe 3,075 2,813
Mountlake Terrace 1,541 1,425
Mukilteo 1,144 1,041
Snohomish 4,909 4,368
Stanwood 2,286 1,989
Sultan 662 593
Tulalip 1,144 1,014
Woodinville* 190 175
Woodway 79 76
Unknown/Other 31 27

City counts include both confirmed and probable cases. Numbers less than 5 are suppressed to protect medical privacy. Not all cases are within city limits and totals may include nearby unincorporated Snohomish County. Unknown includes cases still under investigation.

*Counts are for portions in Snohomish County only

**No longer in isolation, not hospitalized at this time, not deceased