The county's known total is now at 128,963 cases and 1,792 deaths.
Average percentage of positive viral tests in the past week, as of Monday: 19.5%.
Known infections now number 17,111 total, going back to March.
Based on guidance from the CDC's Advisory Committee on Immunization Practices (ACIP), COVID-19 vaccine will be rolled out in Lewis and Clark County in several phases.
King County continues to have the highest numbers in Washington, with 58,968 cases and 964 deaths.
The county's reported death total per the Department of Health also increased from 15 to 19.
One of the deceased was a man and the other a woman, both age 65 or older.
"Because Los Angeles County is experiencing an unprecedented surge of COVID-19 cases, hospitalizations, and deaths, every effort to prevent the spread of COVID-19 to congregants and to the entire community is critical", a county statement read.
December so far has seen 43 county residents die after contracting the virus. The number of patients in intensive care units also remains the same at about 175 patients. The only area not under the state's regional stay-at-home order is Northern California, which is at 22.4%.
Lee Health officials said they're expecting a few thousand doses of Pfizer's COVID-19 vaccine to arrive Tuesday morning.