Department of Numbers

California COVID-19 Case and Testing Statistics

As of Friday October 23 2020, California had 886,865 cases of COVID-19 and 17,262 deaths. Over the past week, California was finding 3,627 new cases per day on average and recording 61.7 deaths per day. Data for California is provided by the COVID Tracking Project and will be updated daily.

Compare California COVID-19 data to other states.

California average daily new cases

The current 7 day rolling average of new case discovery in California is 3,627.0. The 7 day rolling average of new case discovery last peaked on Saturday July 25 2020 at 10,005.3 and is now 6,378.3 lower (63.75%). From a post peak low of 2,942.9 on Wednesday October 07 2020, the 7 day rolling average of new case discovery for California has now grown by 684.1 (23.25%).

Note: If testing is insufficient the above curve will underrepresent true case discovery. Nationwide daily testing per million residents is currently 3263.6. Reported California testing per million residents per day is 3114.2.

California average daily deaths

The current 7 day rolling average of reported deaths in California is 61.7. The 7 day rolling average of reported deaths last peaked on Friday August 07 2020 at 143.7 and is now 82.0 lower (57.06%). From a post peak low of 54.1 on Sunday October 18 2020, the 7 day rolling average of reported deaths for California has now grown by 7.6 (13.98%).

Statistics for positive cases of COVID-19 in California

Total Cases and Total Cases per 1M residents are cumulative counts. Daily Positive measures are rolling 7 day averages.

Date Total
Cases
Total
Cases
per 1M
Daily
Positives
(7d Avg)
Daily
Positives
per 1M
(7d Avg)
10/23/20 886,865 22,445 3,627 91.8
10/22/20 880,724 22,290 3,189 80.7
10/21/20 877,784 22,216 3,245 82.1
10/20/20 874,077 22,122 3,096 78.3
10/19/20 870,791 22,039 2,966 75.1
10/18/20 867,317 21,951 2,963 75.0
10/17/20 864,455 21,878 3,097 78.4
10/16/20 861,476 21,803 3,267 82.7
10/15/20 858,401 21,725 3,372 85.3
10/14/20 855,072 21,641 3,407 86.2
10/13/20 852,406 21,573 3,421 86.6
10/12/20 850,028 21,513 3,321 84.0
10/11/20 846,579 21,426 3,264 82.6
10/10/20 842,776 21,330 3,334 84.4
10/09/20 838,606 21,224 3,047 77.1

more history ...

Death statistics for COVID-19 in California

Total Deaths and Total Deaths per 1M residents are cumulative counts. Daily Death measures are rolling 7 day averages.

Date Total
Deaths
Total
Deaths
per 1M
Daily
Deaths
(7d Avg)
Daily
Deaths
per 1M
(7d Avg)
10/23/20 17,262 436.9 61.7 1.6
10/22/20 17,189 435.0 61.7 1.6
10/21/20 17,027 430.9 55.4 1.4
10/20/20 16,992 430.0 58.7 1.5
10/19/20 16,970 429.5 56.9 1.4
10/18/20 16,943 428.8 54.1 1.4
10/17/20 16,899 427.7 57.0 1.4
10/16/20 16,830 425.9 57.4 1.4
10/15/20 16,757 424.1 56.6 1.4
10/14/20 16,639 421.1 58.7 1.5
10/13/20 16,581 419.6 57.7 1.5
10/12/20 16,572 419.4 60.4 1.5
10/11/20 16,564 419.2 63.4 1.6
10/10/20 16,500 417.6 60.9 1.5
10/09/20 16,428 415.8 63.1 1.6

more history ...

COVID-19 testing statistics in California

All measures below are rolling 7 day averages except Total Tests and Total Tests per 1M residents which are cumulative counts of COVID-19 tests as of the date reported. Testing statistics are dependent on high quality reporting of negative test results by states. Not all states report all tests and thus some of these measures may not represent the true testing picture.

Date Total
Tests
Total
Tests
per 1M
Daily
Tests
(7d Avg)
Daily
Tests
per 1M
(7d Avg)
Daily
Positive
Rate
(7d Avg)
10/23/20 17,483,293 442,478 123,048 3,114 2.9%
10/22/20 17,358,770 439,327 120,137 3,040 2.6%
10/21/20 17,293,139 437,666 123,950 3,137 2.6%
10/20/20 17,189,070 435,032 122,193 3,093 2.5%
10/19/20 17,042,408 431,320 121,581 3,077 2.4%
10/18/20 16,892,062 427,515 120,723 3,055 2.5%
10/17/20 16,756,711 424,089 125,467 3,175 2.5%
10/16/20 16,621,956 420,679 126,494 3,201 2.6%
10/15/20 16,517,812 418,043 127,741 3,233 2.6%
10/14/20 16,425,487 415,706 124,112 3,141 2.7%
10/13/20 16,333,717 413,384 129,042 3,266 2.6%
10/12/20 16,191,341 409,781 127,094 3,217 2.6%
10/11/20 16,047,004 406,128 126,674 3,206 2.6%
10/10/20 15,878,445 401,862 125,651 3,180 2.6%
10/09/20 15,736,497 398,269 124,009 3,139 2.5%

more history ...

A final word on this analysis

Please take my calculations and amatuer epidemiological speculations with a grain of salt as I'm moving quickly to get what I hope are meaningful measures online. There may be errors in my data and my thinking! Also, this data may be revised as states revise and backfill their data.

These statistics were inspired by posts on Calculated Risk and the Bondad Blog regarding metrics to track for COVID-19.

Last but not least, thanks to the folks at COVID Tracking Project for making this data available to everyone.