At different times, I’ve seen references to Winterwarm and it’s on maps just south of Fallbrook, labelled as if it’s a separate town. The name Winterwarm appears in various places — Yelp has a page for it, Zillow recognizes it, and there’s a Winterwarm Farms on Winterwarm Drive in south Fallbrook.
From the Fallbrook Historical Society:
Winterwarm, sometimes spelled Winterwurm, was not imagined to be its own town. It was always intended as a real estate development, called Winterwarm Farms Tract on the old Palomares Ranch that was subdivided into home plots.
Everyone did their shopping, and the kids went to school in Fallbrook or Bonsall. In the late 1920s, it was referred to as the Winterwarm Tract. The Fallbrook post office began delivering mail to Winterwarm in 1928. The Fallbrook Chamber of Commerce was very interested in the development of Winterwarm, and all of the former Rancho Monserate.
Information/photos courtesy of Fallbrook Historical Society, curators of Fallbrook history since 1976
