Department of Numbers

California COVID-19 Case and Testing Statistics

As of Wednesday January 13 2021, California had 2,781,039 cases of COVID-19 and 31,102 deaths. Over the past week, California was finding 42,688 new cases per day on average and recording 520.0 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 42,687.6. The 7 day rolling average of new case discovery last peaked on Tuesday December 22 2020 at 43,948.1 and is now 1,260.6 lower (2.87%). From a post peak low of 34,604.7 on Thursday December 31 2020, the 7 day rolling average of new case discovery for California has now grown by 8,082.9 (23.36%).

Note: If testing is insufficient the above curve will underrepresent true case discovery. Nationwide daily testing per million residents is currently 5875.3. Reported California testing per million residents per day is 8294.1.

California average daily deaths

At 520.0, the 7 day rolling average of reported deaths for California is at a new high as of Wednesday January 13 2021.

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)
01/13/21 2,781,039 70,384 42,688 1080.4
01/12/21 2,747,288 69,530 42,136 1066.4
01/11/21 2,710,801 68,607 41,415 1048.2
01/10/21 2,670,962 67,598 39,957 1011.3
01/09/21 2,621,277 66,341 39,338 995.6
01/08/21 2,568,641 65,009 39,439 998.1
01/07/21 2,518,611 63,743 39,033 987.9
01/06/21 2,482,226 62,822 37,726 954.8
01/05/21 2,452,334 62,065 37,873 958.5
01/04/21 2,420,894 61,270 37,845 957.8
01/03/21 2,391,261 60,520 38,351 970.6
01/02/21 2,345,909 59,372 39,035 987.9
01/01/21 2,292,568 58,022 35,754 904.9
12/31/20 2,245,379 56,827 34,605 875.8
12/30/20 2,218,142 56,138 36,295 918.6

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)
01/13/21 31,102 787.1 520.0 13.2
01/12/21 30,513 772.2 501.4 12.7
01/11/21 29,965 758.4 475.7 12.0
01/10/21 29,701 751.7 451.9 11.4
01/09/21 29,233 739.9 410.9 10.4
01/08/21 28,538 722.3 366.7 9.3
01/07/21 28,045 709.8 379.9 9.6
01/06/21 27,462 695.0 357.7 9.1
01/05/21 27,003 683.4 353.9 9.0
01/04/21 26,635 674.1 335.9 8.5
01/03/21 26,538 671.6 331.1 8.4
01/02/21 26,357 667.1 339.1 8.6
01/01/21 25,971 657.3 289.1 7.3
12/31/20 25,386 642.5 250.1 6.3
12/30/20 24,958 631.6 239.1 6.0

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)
01/13/21 36,842,651 932,437 327,719 8,294 13.0%
01/12/21 36,508,384 923,977 311,086 7,873 13.5%
01/11/21 36,170,528 915,426 291,931 7,388 14.2%
01/10/21 35,826,824 906,728 287,720 7,282 13.9%
01/09/21 35,353,748 894,755 280,329 7,095 14.0%
01/08/21 35,027,330 886,494 281,288 7,119 14.0%
01/07/21 34,760,355 879,737 272,125 6,887 14.3%
01/06/21 34,548,621 874,378 275,078 6,962 13.7%
01/05/21 34,330,784 868,865 279,473 7,073 13.6%
01/04/21 34,127,013 863,708 285,500 7,226 13.3%
01/03/21 33,812,786 855,755 283,727 7,181 13.5%
01/02/21 33,391,442 845,091 277,843 7,032 14.1%
01/01/21 33,058,311 836,660 284,493 7,200 12.6%
12/31/20 32,855,482 831,527 297,962 7,541 11.6%
12/30/20 32,623,076 825,645 307,788 7,790 11.8%

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.