- Humboldt State University (20)
- Arcata Pet Supplies
Offering dog, cat, ferret, bird, fish, and reptile supplies.
- Michael Olaf Montessori Company
Produces publications providing practical information on using Montessori theory in homes and schools.
- Arcata Eye
Includes local news, feature stories, and an unusually entertaining Police log.
- City of Arcata
- Humboldt Folklife Society
Exists to preserve and promote the folk arts in music, dance, and craft.
- Californians for Alternatives to Toxics
Dedicated to preventing harm caused by the unwise use of toxic chemicals in the environment, particularly pesticides.
- Plum Flower Press
Specializes in the Chinese internal styles, particularly Pa Kua, Xing Yi, Tai Ji, Taoism, and Chinese medicine. Offers books and videos.
- Sacred Grounds Organic Coffee Roasters
Sells certified organic coffees, retail and wholesale.
- Mad River Rapids RV Park
On the Northern California coast. Nearby is HSU, fishing, redwoods, beaches, golfing, wildlife.
- Friends of the Dunes
Community-based nonprofit organization dedicated to conserving the native coastal dune environments in Humboldt County.
- Minor Theatres
North Coast movie source with listings and showtimes for Humboldt County.
- Muddy Waters Coffee Co.
Featuring conventional, certified organic, and free-trade coffees. Includes events calendar, industry news, and more.
- Cafe Tomo
Featuring live music, lunch, dinner.
- Expo Art
Designs signs and automotive graphics.
- Humboldt Light Opera Company
Providing artistic opportunities for local talent through live musical theatre productions.
- Bebop and Brew
Annual jazz festival and micro-brew tasting event in a redwood setting in Arcata, CA.
International folk dance band, from Arcata, CA playing dance music for events, bar mitzvahs, cultural celebrations, festivals, and more.