RoadsideThoughts
A Gazetteer for the United States and Canada
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Welcome to Mormon Island ...

So far, we found very little information about Mormon Island. The little that we've found leads us believe that the community is historic.<1>

We've added Mormon Island to our Gazetteer with the hope that we can develop more information. If you can help us with Mormon Island, please Contact Us.

Mormon Island would have been located within present day Sacramento County<2>.

While we don't have a date for the founding of Mormon Island, you might consider that their post office opened  in 1851. The community was inundated by Folsom Lake.

Time Zone: The area where Mormon Island was located is in the Pacific Time Zone (PST/PDT) and observes daylight saving time

Communities near Mormon Island ...

We have created a list of 10 communities that are near Mormon Island.

To Help With Your Genealogy Research ...

We have a couple of sections for those tracing their genealogy.

We created a list of cemeteries that are in the area around Mormon Island. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Mormon Island.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Mormon Island. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around Mormon Island.

We also have a detailed list of newspapers that have been published in the area around Mormon Island. See our Newspapers Page for Mormon Island.

Adding Mormon Island to Our Gazetteer ...

The earliest source we've referenced which mentioned Mormon Island was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<5>

From that list, the Mormon Island post office opened in 1851.

We also found Mormon Island in the book titled List of Post Offices in the United States (1870).

For more details, see References and Mentions for Mormon Island.

Footnotes ...

<1>We use the term 'Historic' broadly and it generally means that the community no longer exists. However, it can also mean that the community might still exist, but was significantly larger or had a more 'official' existence in the past than it does now. Unfortunately our sources of data have proven to be unreliable. If you can provide us with more specific information about Mormon Island, please let us know so that we can improve our accuracy.
<2>If you're interested in how the shape of California's counties, including Sacramento, have changed over time, we recommend the Atlas of Historical County Boundaries.
<3>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<4>The location has been supplied by the Geographic Names Information System - which is maintained by the U.S. Geological Survey (USGS). While these values should be definitive, we found that accuracy can vary and you should double-check the location if accuracy is required.
<5>A copy of their list with background information can be found at:

      https://cblevins.github.io/us-post-offices/data-biography/