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COVID-19 Data

In an ongoing effort to understand COVID-19 transmission and improve clinical outcomes in our community, Lake County Public Health tracks demographic, geographic and clinical information about confirmed COVID-19 cases. Key datasets are displayed below and will be updated as our data collection and analysis improves, as more information becomes available, and as regulatory metrics evolve.

Every effort will be made to update COVID-19 Summary Data every weekday by 1:30 p.m. Demographic Data & Epi-Curve will be updated weekly on Tuesdays.

Please be aware that the data presented here is not real-time and may not reflect the most recent information. Delays of up to a day may occur between the reporting of cases and recording times at the local, state and national data levels (the sources for this page).


COVID-19 Summary Data

(Updated Monday-Friday by 1:30 p.m.)


Last Update: September 18, 2020 at 12:21 Pm


Lake County Snapshot


Source: Lake County Health Services
 Lake County Coronavirus Cases at a Glance
  Total Active Recovered Deaths
Total Cases 459 73 376 10

Source: Lake County Health Services
 Lake County Coronavirus Hospitalizations
  Currently Hospitalized Ever Hospitalized
 Total Cases 28 

Source: Lake County Healthcare Partners and CalREDIE
 Lake County Testing at a Glance 
Result Total Resulted
Percent of Total
Positive 459 4%
Negative 12,385 96%
Total 12,844  100%

A note about Lake County Testing data:

This data may not include pending tests, antibody tests or tests done at point-of-care providers. This data is not real-time. Delays may occur due to processing, reporting and recording times at state and local levels.

Positive: persons with a confirmed positive COVID-19 test by polymerase chain reaction (PCR).
Negative: persons with a non-positive COVID-19 test by negative PCR.
Total tests: total number of tests that have been completed and resulted to CalREDIE and healthcare partners by the performing lab. This is not reflective of the total number of tests administered.


Lake County Epi-Curve 

Epi Curve

Data Source: CalREDIE as of September 14, 2020 Data Note: Data may change as additional information is received. The Epi-Curve reflects the weekly count of the number of new cases identified per week (by episode date).


Demographic Data

(Updated Weekly)


last update: September 15, 2020 at 2:50 pm

Cases by Gender

Source: Lake County Health Services
Gender Cases Percent
Male 188 45%
Female 230 55%

Cases by Age Range

Source: Lake County Public Health
Age Range
(in years)
Cases Percent of Total
0-12 40 10% 
13-24 71 17%
25-34 80 19%
35-44 71 17%
45-54 56 13%
55-64 46 11%
65 and older 53 13%
Age Unknown 1 0%

Cases by District & Zip Code

Source: Lake County Health Services
 District District Total Zip Code Zip Code Total
 District 1 57  95457 21
 95467 19
 95461 17
 District 2 141  95422 139
 95424 2
 District 3 62  95423 18
 95458 16
 95464 17
 95485 10
 95493 1
 95443 0
 District 4 91  95453 89
 95435 2
 District 5 55  95426 4
 95451 51
 Unknown 12  Unknown 12

District Areas:
District 1:  Middletown, Hidden Valley Lake, Anderson Springs, Lower Lake, portions of Clearlake
District 2:  most of the City of Clearlake and areas east
District 3:  Spring Valley, Clearlake Oaks, Clearlake Park (north of the City limits), Glenhaven, Lucerne, Nice, Upper Lake, Blue Lakes, Lake Pillsbury
District 4:  Lakeport, Scotts Valley, Finley, Lampson Airport area, Rivera Heights, Highland Springs, most of Big Valley
District 5:  Kelseyville (town and general area), Riviera West, Clearlake Riviera, Buckingham, Loch Lomond, Cobb


If you are uncertain what Supervisorial District you live in, visit the Lake County District Map, and enter your address.


Cases by Source

Source: Lake County Health Services
Source Cases Percent
 of Total
Close Contact* to a Known Case 190 45%
Out of County Contact* to a Known Case 26 6%
Presumed Occupational Contact 31 7%
Presumed Community Transmission 18 4%
Congregate Living** Situation 26 6%
Under Investigation 78 19%
Other or Unknown 50 12%
*Close Contact:  Individual who has had close contact (<6 feet) for ≥15 minutes either with a person with COVID-19 who has symptoms (in the period from 2 days before symptom onset until they meet the CDC criteria for discontinuing home isolation), or with a person who has tested positive for COVID-19 (laboratory confirmed) but has not had any symptoms (in the 2 days before the date of specimen collection until they meet CDC criteria for discontinuing home isolation). Source: CDC.gov Public Health Guidance for Community-Related Exposure. **Congregate Living:  group living; includes jails, nursing homes, etc.

California's Blueprint for a Safer Economy

Learn more about California's Blueprint for a Safer Economy and the Tier Framework.



Lake County Story Map


World & US Snapshot


Source: Johns Hopkins University Coronavirus Resource Center