COVID-19 Case Count Info


The Snohomish Health District is providing regular updates on case counts in Snohomish County. We are committed to providing accurate information while respecting the medical privacy of those who become ill with COVID-19.

As of April 24, updates will only be posted by 2 p.m. Monday-Friday. Information received or completed over the weekend will be reflected in the Monday update.

Also, starting May 8, we are no longer providing a daily breakdown of cases and deaths at individual long-term care facilities. Total number of cases and deaths associated with long-term care facilities will be provided daily Monday-Friday, and a breakdown by individual long-term care facilities will be updated weekly.

This change in data reporting is to help prioritize time and effort for case investigation, contact tracing, and long-term planning. It also is important for our long-term care response team to be able to focus on testing and assisting at facilities with cases, and for long-term care facilities with a small number of known cases to feel confident reaching out for testing and support. 

In order to be able to look at dialing back some of our mitigation strategies, public health needs to have adequate case investigation and contract tracing capacity.

The Health District has added some temporary staff, coordinated with the state, and reassigned staff from other programs. However, it also needs to prioritize the work teams are doing. That includes the time spent downloading data and updating charts over the weekend.

Instead, the team’s limited resources will be focused on case investigations. By getting those unknown cases down closer to zero, the team will stand ready to respond to slight increases in cases that will invariably happen when mitigation measures begin to ease.

As a reminder, some high-level Snohomish County data is available in the statewide updates online at

Case Count Last Updated: 1:45 p.m. 6/5/2020
Confirmed 3,044
Probable 428

Confirmed: positive test result. Probable: symptomatic close contact associated with a confirmed case, or positive serologic test for antibodies to COVID-19 and credible history of COVID-like illness.
As of March 13, the Snohomish Health District is no longer reporting suspect, pending or ruled out case numbers. As more commercial labs begin providing COVID-19 testing, the District no longer receives reports of all residents who are tested and awaiting results or who have tested negative.

Current Status Last Updated: 1:45 p.m. 6/5/2020
Isolation (home or in long-term care) 228
At isolation and quarantine facility 0
Hospitalized 26
Recovered 2,960
Deceased 152
Under investigation/Unknown 106
Type of Contact Last Updated: 1:45 p.m. 6/5/2020
Community Acquired / Close Contact 2,233
Long-term care facility associated 609
Monroe Correctional Complex (staff and inmates) 24
Healthcare Worker 273
Travel  54
Under Investigation/Unknown 279

Detailed updates for long-term care facility case counts and testing are provided weekly. See the weekly update here(Last updated 6/4/20)

Gender Last Updated: 1:45 p.m. 6/5/2020
Female 1,865
Male 1,607

Cases by Age Group

COVID-19 cases by age group

Case Count by City

City Number of cases (Last Updated: 1:45 p.m. 6/5/2020)
Arlington 128  (118 recovered)
Bothell* 218  (199 recovered)
Brier 22  (22 recovered)
Darrington <5  (<5 recovered)
Edmonds 352  (301 recovered)
Everett 1,024  (816 recovered)
Gold Bar <5  (<5 recovered)
Granite Falls 29  (23 recovered)
Index 0
Lake Stevens 123  (115 recovered)
Lynnwood 659  (567 recovered)
Marysville 256  (219 recovered)
Mill Creek 58  (47 recovered)
Monroe 89  (76 recovered)
Mountlake Terrace 115  (103 recovered)
Mukilteo 67  (60 recovered)
Snohomish 162  (147 recovered)
Stanwood 109  (91 recovered)
Sultan 8  (8 recovered)
Tulalip 24  (20 recovered)
Woodinville* 12  (11 recovered)
Woodway 8  (8 recovered)
Unknown/Other <5  (<5 recovered)

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.

Total cases of COVID-19 in Snohomish County by date

total cases graph

New cases of COVID-19 Reported in Snohomish County by Date

COVID-19 case count graph new cases by day

Status of COVID-19 Cases in Snohomish County by Date

status of cases graph

Number of cases by symptom onset date

Number of cases by symptom onset date

Snohomish County COVID-19 Case Rate per 100,000 for 2-Week Rolling Periods (March 1 - May 30, 2020)

Cases per two week period

Case rates per 100,000 by race and ethnicity

Race and Ethnicity_April 17

Deaths of Snohomish County Residents

The Snohomish Health District receives reports of deaths associated with COVID-19 from a number of sources. These include hospitals or healthcare facilities, other state or local health jurisdictions, the Snohomish County Medical Examiner’s Office, or through case investigations.

All death data provided are confirmed either through test results done before or after a death. There could be underlying health conditions, but COVID-19 is still considered a contributing factor. 

Note that county-level death data will likely not match numbers provided by the Washington State Department of Health or the Snohomish County Medical Examiner’s Office. We provide numbers for Snohomish County residents with deaths associated with COVID-19. If a resident died in a hospital or facility in another county, they would still be included in our numbers. Numbers can also vary based on the time of day when reports are run.

Gender Last Updated: 1:45 p.m. 6/5/2020
Female 70
Male 82
Underlying conditions Last Updated: 1:45 p.m. 6/5/2020
Yes 144
No 8
Unknown 0
Type of contact Last Updated: 1:45 p.m. 6/5/2020
Community acquired/close contact 71
Travel 3
Long-term care facility associated 78
Under investigation/Other 0

Deaths by Age

deaths by age graph
Deaths by city Last Updated: 1:45 p.m. 6/5/2020
Arlington 2
Bothell* 8
Brier 0
Darrington 0
Edmonds 25
Everett 59
Gold Bar 0
Granite Falls 0
Index 0
Lake Stevens 2
Lynnwood 23
Marysville 12
Mill Creek 5
Monroe 1
Mountlake Terrace 2
Mukilteo 0
Snohomish 3
Stanwood 9
Sultan 0
Tulalip 0
Woodinville* 1
Woodway 0

*Counts are for portions in Snohomish County only

COVID-19 Related Deaths in Snohomish County by Date

number of deaths by date


Snohomish County COVID-19 Testing by Date

Testing graph
Week Total Total negative Total positive Percent positive
3/3 - 3/9 450 374 76 16.9%
3/10 - 3/16 2891 2543 348 12.0%
3/17 - 3/23 3396 2976 420 12.4%
3/24 - 3/30 3396 2889 507 14.9%
3/31 - 4/6 3229 2859 370 11.5%
4/7 - 4/13 2548 2274 274 10.8%
4/14 - 4/20 2533 2328 205 8.1%
4/21 - 4/27 2520 2306 214 8.5%
4/28 - 5/4 2996 2816 180 6.0%
5/5 - 5/11 2996 2870 126 4.2%
5/12 - 5/18 3369 3263 106 3.1%
5/19 - 5/25 2657 2563 94 3.5%
*5/26 - 6/2 3508 3449 59 1.7%

*Data incomplete for most recent dates

Testing table last updated: 6/4/20
Source: Washington State Department of Health