San Bernardino County released city-by-city data Monday, March 30, in a list on its website and Yucaipa has the most confirmed cases after 12 residents in a nursing facility there tested positive over the weekend.

The city has 18 of the 111 confirmed cases released Sunday. No new cases had been reported as of 6:45 p.m. Monday.

Three people in the county have died of COVID-19, including an 89-year-old with underlying health issues who lived in the Yucaipa nursing home. The residences of the other two have not been disclosed.

In Riverside County, there have been nine COVID-19 deaths with 291 cases reported Monday, while Orange County reported four deaths and 464 cases. Los Angeles County, which has a much larger population, has confirmed 44 deaths and 2,505 cases.

Here’s where the confirmed cases are:

Yucaipa, 18

Rancho Cucamonga, 14

Fontana, 8

Highland, 7

Redlands, 7

Rialto, 7

San Bernardino, 6

Upland, 6

Victorville, 6

Chino Hills, 5

Ontario, 5

Barstow, 3

Chino, 3

Loma Linda, 3

Bloomington, 2

Running Springs, 2

Big Bear Lake, 1

Colton, 1

Hesperia, 1

Montclair, 1

Oak Hills, 1

Phelan, 1

Yucca Valley, 1

The locations of two cases remains undetermined. Cities and communities not listed have no positive cases.

“The number of cases by city provides a picture of community spread within our county,” Dr. Erin Gustafson, acting health officer, said in a statement. “However, residents of cities not listed or with low case numbers should assume and behave as if there are cases within their communities and comply with the statewide stay-at-home order. Residents of cities that are listed should not panic and feel the need to go somewhere else. I cannot stress strongly enough the importance of staying at home and practicing good hygiene to reduce further community spread.”

Data is based on information contained on lab slips that accompany test results. In some cases, the location might be of the hospital where a patient is being treated, a detention facility where a patient is being held or something else, officials said. The numbers may change as that information is corrected, officials said.

Ontario city officials urged residents and businesses to remain vigilant in practicing social distancing, after learning they had five cases. The city filed a public records request last week with the county seeking a city breakdown of the data.

“As we have fully expected, the numbers of confirmed cases throughout our region, state and nation are increasing and will continue to do so in the coming weeks. Now that we have local data, it underscores the need to redouble our efforts in practicing social distancing and safe health habits,” said Mayor Paul Leon, in a news release.

On Monday, Riverside County officials announced that Harvest Christian Fellowship in Riverside will become a drive-thru testing site, open to all, not just residents of that county. Those who want to be tested must show symptoms and call 800-945-6171 for an appointment. Drive-ups without an appointment will not be tested. Those exposed to a confirmed case also can be tested.

San Bernardino County held its first drive-thru testing on Friday at the National Orange Show Events Center where they tested hundreds. Additional events will be scheduled and announced as testing materials become available, county spokesman David Wert said. The goal is to hold such events elsewhere in the county.

Assemblyman James Ramos, D-Highland, will hold a telephone town hall with county health officials from 2 to 3 p.m. Tuesday, March 31. To RSVP, email Assemblymember.Ramos@assembly.ca.gov or call the district office at 909-476-5023.

To join the town hall call 816-423-4282 or 866-590-5055. The access code is 9671462.