Welcome to Tammukan ...

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

We've added Tammukan to our Gazetteer with the hope that we can develop more information. We would especially like to find the location of Tammukan - knowing its coordinates, we can explore things like its relationship to neighboring communities, nearby cemeteries, etc. If you can help us with Tammukan, please Contact Us.

While we don't have the exact location of Tammukan , we believe that it would have been located within present day Contra Costa County<2>.

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

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 Tammukan, 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 Contra Costa, have changed over time, we recommend the Atlas of Historical County Boundaries.