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: 2:00 p.m. 5/23/22 Change from 5/16/22
Confirmed  143,348 +2,106
Probable 19,506 +381

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.

Antigen test results are still positive cases, but conducted through rapid tests rather than molecular testing doing at laboratories. 

For more detailed county-level data, including deaths, please see the DOH Data Dashboard.

Hospital Data

  Last updated 5/25/22 Change from 5/24/22
COVID Positive
46 -2
COVID Ventilated 3 -1
Deaths 0 +0

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 7-day Rolling Period (updated Mondays)

case counts rate

*Starting in April 2022, case-rate data are by week, not a rolling 2-week time frame. This is in alignment with Washington State Department of Health

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

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

Case Rates per 100,000 by ZIP (April 3, 2022 - April 9, 2022) 

ZIP Code Case Rates 04.26 (1)

COVID-19 Vaccinations by ZIP (As of April 17)

ZIP Code Vax Rates ALL 4.26

CASE HEAT MAP (APRIL 3, 2022 - APRIL 9, 2022)

Heat Map 4.26.22

CITY cumulative case count (Last Updated 5/23/22)

city count picture

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.

*For cities that cross county lines, counts are for portions in Snohomish County only.