Welcome to Union ...

Union is located in Napa County<1>.

Union is 70 feet [21 m] above sea level.<2>.

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

Union lies within the (707) area code.

Communities Also Named Union ...

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

• Vallejo
  (15 miles [24.1 km] to the south)
  • Jump to our Gazetteer entry for Vallejo
  • Vallejo is located in Solano County
  • Population from the 2020 Census: 120,747 people
  • Jump to TripAdvisor's Tourism page for Vallejo <3>
• Fairfield
  (15 miles [24.1 km] to the east)
  • Jump to our Gazetteer entry for Fairfield
  • Fairfield is located in Solano County
  • Population from the 2020 Census: 117,580 people
  • Jump to TripAdvisor's Tourism page for Fairfield <3>
• Vacaville
  (17 miles [27.4 km] to the east)
  • Jump to our Gazetteer entry for Vacaville
  • Vacaville is located in Solano County
  • Population from the 2020 Census: 101,332 people
  • Jump to TripAdvisor's Tourism page for Vacaville <3>
• Petaluma
  (18 miles [29 km] to the west)
  • Jump to our Gazetteer entry for Petaluma
  • Petaluma is located in Sonoma County
  • Population from the 2020 Census: 60,632 people
  • Jump to TripAdvisor's Tourism page for Petaluma <3>
• Suisun City
  (15 miles [24.1 km] to the east)
  • Jump to our Gazetteer entry for Suisun City
  • Suisun City is located in Solano County
  • Population from the 2020 Census: 29,305 people
  • Suisun City has also been known as:
  • Suisun
  • Jump to TripAdvisor's Tourism page for Suisun City <3>
• American Canyon
  (10 miles [16.1 km] to the south)
  • Jump to our Gazetteer entry for American Canyon
  • American Canyon is located in Napa County
  • Estimated population in 2015: 20,554 people
  • Jump to TripAdvisor's Tourism page for American Canyon <3>
• Sonoma
  (8 miles [12.9 km] to the west)
  • Jump to our Gazetteer entry for Sonoma
  • Sonoma is located in Sonoma County
  • Population from the 2020 Census: 10,973 people
  • Jump to TripAdvisor's Tourism page for Sonoma <3>
• Saint Helena
  (15 miles [24.1 km] to the northwest)
  • Jump to our Gazetteer entry for Saint Helena
  • Saint Helena is located in Napa County
  • Population from the 2020 Census: 5,960 people
  • Jump to TripAdvisor's Tourism page for Saint Helena <3>
• Yountville
  (6 miles [9.7 km] to the northwest)
  • Jump to our Gazetteer entry for Yountville
  • Yountville is located in Napa County
  • Population from the 2020 Census: 2,970 people
  • Jump to TripAdvisor's Tourism page for Yountville <3>
• Suscol ‑ Historic
  (5 miles [8 km] to the south)
  • Note: The GPS coordinates that we are using for Suscol have been provided by the GNIS.<4> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Suscol
  • Suscol is located in Napa County
  • Suscol has also been known as:
  • Soscol
  • Susqual

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.

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 Napa County: www.co.napa.ca.us/

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