The phrase identifies a specific type of festive gathering centered around the Halloween holiday, occurring within the geographical boundaries of Orange County, California. These events typically involve costumes, themed decorations, and activities aligned with the Halloween tradition, such as costume contests and haunted houses. For example, a resident searching online for local holiday events might use the phrase to find relevant options.
Such celebrations provide opportunities for community engagement and economic activity. Local businesses benefit from increased patronage related to costumes, decorations, and party supplies. Historically, the rise in popularity of Halloween celebrations has led to a substantial industry dedicated to providing associated goods and services, and the local iteration of that industry flourishes with these gatherings.