Welcome to Harbor Island ...
Although we found mention of Harbor Island during our research, we have little information about it.<1> Given the context of how Harbor Island was mentioned, we believe that it was a community rather than some type of landmark. We have done a cursory search and if it's a community, we haven't been able to find any evidence that it still exists.
While we are confident that Harbor Island was located in Orange County, we don't know its actual location within the county.
We've added Harbor Island to our Gazetteer with the hope that we can develop more information. We would especially like to find the location of Harbor Island - knowing its coordinates, we can explore things like its relationship to neighboring communities, nearby cemeteries, etc. If you can help us with Harbor Island, please Contact Us.
A typical abbreviation for Harbor Island: Harbor Is. (in Canada, 'Isld.' is the more common abbreviation.)
Time Zone: The area where we believe that Harbor Island might be (or was) located is in the Pacific Time Zone (PST/PDT) and observes daylight saving time