Welcome to Union ...

Union is located in San Luis Obispo County<1>.

The location of Union has been provided by the Geographic Names Information System (ie- the GNIS).<2>

While we don't have a date for the founding of Union, you might consider that their post office opened  in 1900.

Union is 1,030 feet [314 m] above sea level.<3>.

Time Zone: Union lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time

Union lies within the (805) area code.

Communities Also Named Union ...

While we believe that this Union is located in San Luis Obispo County, we know of another 2 California communities named Union. Those communities are located in the following counties: Merced and Napa County.

Beyond California, there are 121 communities that are also named Union - they are located in Alabama (10), Arizona, Arkansas (5), Colorado, Connecticut, Florida, Georgia (10), Illinois (5), Indiana, Iowa (2), Kansas (5), Kentucky (3), Louisiana, Maine, Michigan, Minnesota, Mississippi (6), Missouri (3), Montana, Nebraska, Nevada, New Hampshire, New Jersey (3), New Mexico, New York (3), North Carolina (5), North Dakota, Nova Scotia, Ohio (3), Oklahoma (3), Ontario (4), Oregon, Pennsylvania, Prince Edward Island, South Carolina (4), Tennessee (6), Texas (9), Utah, Virginia (2), Washington (2), West Virginia (3) and Wisconsin (3).

For more information, see our Tidbits & Trivia Page for Union.

Communities near Union ...

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

• El Paso de Robles
  (5 miles [8 km] to the west)
  • Note: The GPS coordinates that we are using for El Paso de Robles have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for El Paso de Robles
  • El Paso de Robles is located in San Luis Obispo County
  • Population from the 2020 Census: 31,521 people
• Atascadero
  (11 miles [17.7 km] to the southwest)
  • Jump to our Gazetteer entry for Atascadero
  • Atascadero is located in San Luis Obispo County
  • Population from the 2020 Census: 30,254 people
  • Jump to TripAdvisor's Tourism page for Atascadero <4>
• Linne
  (4 miles [6.4 km] to the south)
  • Jump to our Gazetteer entry for Linne
  • Linne is located in San Luis Obispo County
• Estrella
  (5 miles [8 km] to the northwest)
  • Jump to our Gazetteer entry for Estrella
  • Estrella is located in San Luis Obispo County
• Oak Park
  (7 miles [11.3 km] to the west)
  • Note: The GPS coordinates that we are using for Oak Park have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Oak Park
  • Oak Park is located in San Luis Obispo County
• Paso Robles
  (7 miles [11.3 km] to the west)
  • Jump to our Gazetteer entry for Paso Robles
  • Paso Robles is located in San Luis Obispo County
  • Jump to TripAdvisor's Tourism page for Paso Robles <4>
• Creston
  (8 miles [12.9 km] to the south)
  • Jump to our Gazetteer entry for Creston
  • Creston is located in San Luis Obispo County
  • Jump to TripAdvisor's Tourism page for Creston <4>
• Wellsona
  (8 miles [12.9 km] to the northwest)
  • Jump to our Gazetteer entry for Wellsona
  • Wellsona is located in San Luis Obispo County
• San Miguel
  (10 miles [16.1 km] to the northwest)
  • Jump to our Gazetteer entry for San Miguel
  • San Miguel is located in San Luis Obispo County
  • Jump to TripAdvisor's Tourism page for San Miguel <4>
• Shandon
  (10 miles [16.1 km] to the east)
  • Jump to our Gazetteer entry for Shandon
  • Shandon is located in San Luis Obispo County
  • Jump to TripAdvisor's Tourism page for Shandon <4>

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 Union. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Union.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Union. 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 Union.

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

TripAdvisor Tourism Pages for Union ...

Looking for more information about Union? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.

While we are unaware of a Tourism page that is specific to Union, there are neighboring communities that do have Tourism pages. A map of those communities can be found with our TripAdvisor Page for Union.

Adding Union to Our Gazetteer ...

We originally found mention of Union in the GNIS. For more information, see the Referenced GNIS Codes section on our Miscellaneous Page.

From our notes, the earliest published mention we've found for Union was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<5>

From that list, the Union post office opened in 1900.

For more details, see References and Mentions for Union.

Off-the-Road Links ...

Unfortunately, we don't know of a website for Union. If you can help, please contact us through our Feedback Page.

The official website for San Luis Obispo County: www.co.slo.ca.us/

The official website for State of California: https://www.ca.gov/