Trillium Realty Group Share: Real Estate, Rentals, Relocation Trillium Realty Group Visit Website 1660 Central Ave. Ste. D McKinleyville, CA 95519 1-707-616-3085 About Map About Residential Real Estate Brokerage. Dedicated to serving Humboldt County with a commitment to integrity and community. What's Nearby? Distance: 5 10 15 20 25 50 mi.