Are There Ticks in California? A Guide to California Tick Species

Exploring the great outdoors in California offers breathtaking views and invigorating hikes, but it also brings the risk of encountering ticks. These tiny creatures can attach to your skin unnoticed, hiding in less visible areas and feeding on your blood, which is essential for their development and reproduction.

If you're planning an adventure in the Golden State, you might be asking, "What kind of ticks are there in California?" This guide provides the necessary information to keep you informed and prepared.

Does California Have Ticks?

California's diverse ecosystems, ranging from coastal areas to dense forests and grasslands, provide habitats for several tick species. Not all ticks are harmful to humans, but understanding which ones are can help prevent tick-borne diseases.

Ticks belong to the order Ixodida, a category of arachnids, which also includes spiders. These ectoparasites live on the outside of their hosts and can transmit disease-causing germs, some of which are dangerous to humans. Being aware of these ticks can help you take steps to protect yourself.

How Common Are Ticks in California?

Ticks can be found in many parts of California's vast landscape, which covers over 163,000 square miles. The likelihood of encountering ticks depends on the specific environment and habitat.

Some types of ticks prefer moist, shaded areas and are more commonly found in wooded, and brushy environments. Other types of ticks prefer open grassland habitats. Tick population density can vary, but areas with higher humidity and suitable animal hosts tend to support larger tick populations.

Types of Ticks in California

Different types of ticks transmit different disease germs, so here’s a list of the most common California tick species and the germs they may carry:

Western Blacklegged Ticks

Usually found in wooded and brush covered landscapes, the western blacklegged tick is prevalent in California. This species is a primary vector for Lyme disease in the western United States. They prefer large mammals, such as deer, for their adult life stage but will also feed on humans and other mammals in all life stages.

Adult stages are most active from fall to early spring, making tick checks essential after outdoor activities during these months. In addition to Lyme disease, they can transmit germs causing anaplasmosis, babesiosis, and a relapsing fever.

Rocky Mountain Wood Ticks

The Rocky Mountain wood tick can be found in shrubby, grassy, and wooded habitats typical of California's more mountainous regions. This tick species is a known vector for Colorado tick fever, Rocky Mountain spotted fever, and tularemia. They are most active during the spring and early summer months when outdoor activities in their habitats are common.

Adults and nymphs prefer larger mammals such as deer and livestock, but will not hesitate to feed on humans if given the opportunity. Due to their ability to transmit several diseases, it is important to take preventive measures and perform thorough tick checks after spending time in areas where they are prevalent.

Pacific Coast Ticks

This tick species is widespread in California and can be found in a variety of habitats, from coastal areas to sagebrush and even deserts. While less commonly associated with human diseases, the Pacific Coast tick can transmit spotted fever group germ called Rickettsia phillipi, as well as the bacteria causing tularemia.

American Dog Ticks

Though more common in other parts of the United States, the American dog tick is also present in California, especially at lower elevations. It prefers grassy areas and can transmit Rocky Mountain spotted fever and tularemia to humans. This species is known for biting dogs but will also bite humans.

Brown Dog Ticks

Somewhat unique among ticks, the brown dog tick can complete its entire life cycle indoors, making it a concern especially for pet owners. While brown dog ticks primarily target dogs, it also does bite humans. It is known to transmit Rocky Mountain spotted fever among dogs and people and is a growing health threat to people in southern California.

When Is Tick Season in California?

Tick activity in California varies by species and geographical area, but encounters are possible year-round. The peak activity for many species occurs during the spring and early summer. However, the western blacklegged tick, which is a concern for Lyme disease, also is active throughout the fall and winter.

Being vigilant about tick checks and protective measures is crucial, especially if you're spending time in areas known for tick activity.

How to Protect Yourself from Ticks in California

Protecting yourself from ticks in California requires a combination of personal precautions and environmental awareness. Before heading outdoors, especially into areas known for tick activity such as wooded, brushy, or grassy locations, apply permethrin to your clothing and gear. Permethrin insect repellent provides long-lasting protection and is effective against ticks and other biting insects found in California. Wearing light-colored clothing can help you spot ticks more easily, and tucking your pants into your socks or boots and your shirt into your pants can prevent ticks from crawling under your clothes. Additionally, conducting regular tick checks on yourself, your children, and pets after outdoor activities is crucial for early detection and removal of ticks.

Insect Shield: Protect Yourself From California Ticks

Understanding the presence of ticks in California is the first step in protecting yourself from potential health risks. Wearing Insect Shield clothing can provide an additional layer of defense against ticks, mosquitoes, fleas, and other insects.

Explore our collection of insect-repellent clothing today and enjoy California's natural beauty with peace of mind.