Manzanita is a coastal city in Tillamook County, Oregon, United States. Take a look below for 10 obscure and amazing facts about Manzanita, Oregon, United States. 1. It is located on U.S. Route 101 about 25 miles (40 km) south of Seaside and 25 miles (40 km) north of Tillamook. 2. The population was 393…