Portland, Oregon and its immediate vicinity is the setting for all of the contemporary action in Grimm. Every single episode has taken place primarily in Portland, with the exception of "The Thing With Feathers", although there were still scenes that took place there.
Portland is a city located in the U.S. state of Oregon, near the confluence of the Willamette and Columbia rivers. As of the 2010 Census, it had a population of 583,776, estimated to have reached 587,865 in 2012 making it the 28th most populous city in the United States. Portland is Oregon's most populous city, and the third most populous city in the Pacific Northwest region, after Seattle, Washington, and Vancouver, British Columbia. Approximately 2,289,800 people live in the Portland metropolitan area (MSA), the 19th most populous MSA in the United States. Also within the Portland metropolitan area are the cities of Vancouver, Washington, Gresham, Oregon, and Hillsboro, Oregon. In Grimm: The Warlock Issue 1, it is revealed that the basketball team in Portland is known as the "Portland Tomahawks" a spin on the real world Portland basketball team the Portland Trail Blazers. In "Twelve Days of Krampus" it is revealed that Portland's central square is known as "O'Brian Square" this is most likely a spin on real life Pioneer Courthouse Square located in downtown Portland.
Located in the Marine west coast climate region, Portland has a climate marked by both warm, dry summers and wet, cool-to-chilly winter days. This climate is ideal for growing roses. For more than a century, Portland has been known as the "City of Roses", with many rose gardens – most prominently the International Rose Test Garden. The city is also known for its abundant outdoor activities, liberal political values, and beer and coffee enthusiasm. Portland is home to a collection of independent microbreweries, microdistilleries and food carts that contribute to the unofficial but widely utilized slogan "Keep Portland Weird".