Los Angeles County Coronavirus (COVID-19) vaccination tracker by community. In Arcadia City, vaccination rates are: ages 12+, 83.8%, ages 65+ 88.7%. In unincorporated Arcadia vaccination rates are: 12+, 80.7% and 65+, 91%. Includes number of cases. Los Angeles County total cases: 1,475,694. Arcadia City has had 3366 total cases and unincorporated Arcadia has had 736 total cases.