Opioid Overdoses and Approved Naloxone by County

There are two heat maps of California.

Opioid Overdoses per 100,000 Residents

The first heat map displays the rate of overdoses per 100,000 residents in each county in 2022.

• Counties in northern California (ex. Humboldt, Del Norte, Mendocino) have the highest overdose rates, particularly in rural areas.
• Urban and central regions (ex. Los Angeles, Sacramento, Fresno) tend to have lower rates.
• Minimal or no overdoses are reported in Alpine and Sierra counties.

5 Counties with the Highest Rates of Opioid Overdoses:

1. Del Norte
2. Humboldt
3. Lake
4. Mendocino
5. Siskiyou

5 Counties with the Lowest Rates of Opioid Overdoses:

1. Alpine
2. Sierra
3. Madera
4. Monterey
5. Mariposa

Approved Naloxone Kits per 100,000 Residents

The second heat map displays the rate of approved naloxone kits per 100,000 residents between 2018 and 2024.

• Northern and rural counties (ex. Humboldt, Alpine, Mendocino) exhibit the highest naloxone distribution rates.
• Central and southern counties, including many urban areas (ex. San Bernardino, San Joaquin, Ventura), exhibit lower naloxone distribution rates.

5 Counties with the Highest Rates of Naloxone Distribution:

1. Lake
2. Humboldt
3. Alpine
4. Del Norte
5. Inyo

5 Counties with the Lowest Rates of Naloxone Distribution:

1. Mariposa
2. Tulare
3. San Mateo
4. Merced
5. San Bernardino