Welcome to Cornwall ...

Cornwall is located in Contra Costa County<1>.

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

While we don't have a date for the founding of Cornwall, you might get a feel for it by knowing that during our research the earliest mention that we found (so far) was in a book dated 1895.

When the people of Cornwall refer to themselves (known as a demonym), they frequently use Cornwallite<3>

Cornwall is 30 feet [9 m] above sea level.<4>.

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

The area code for Cornwall: (925)

Communities Also Named Cornwall ...

Using our Gazetteer, we found that there are 14 communities that are also named Cornwall - they are located in Alabama, Connecticut, Idaho (2), Kansas, Missouri, New York, North Carolina, Ontario, Pennsylvania, Prince Edward Island, Vermont, Virginia and Washington.

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

Communities near Cornwall ...

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

• Concord
  (9 miles [14.5 km] to the west)
  • Jump to our Gazetteer entry for Concord
  • Concord is located in Contra Costa County
  • Population from the 2020 Census: 128,544 people
  • Jump to TripAdvisor's Tourism page for Concord <5>
• Fairfield
  (18 miles [29 km] to the northwest)
  • 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 <5>
• Antioch
  (4 miles [6.4 km] to the east)
  • Jump to our Gazetteer entry for Antioch
  • Antioch is located in Contra Costa County
  • Population from the 2020 Census: 111,605 people
  • Jump to TripAdvisor's Tourism page for Antioch <5>
• San Ramon
  (17 miles [27.4 km] to the south)
  • Jump to our Gazetteer entry for San Ramon
  • San Ramon is located in Contra Costa County
  • Population from the 2020 Census: 82,865 people
  • Jump to TripAdvisor's Tourism page for San Ramon <5>
• Walnut Creek
  (12 miles [19.3 km] to the southwest)
  • Jump to our Gazetteer entry for Walnut Creek
  • Walnut Creek is located in Contra Costa County
  • Population from the 2020 Census: 69,936 people
  • Jump to TripAdvisor's Tourism page for Walnut Creek <5>
• Brentwood
  (11 miles [17.7 km] to the southeast)
  • Jump to our Gazetteer entry for Brentwood
  • Brentwood is located in Contra Costa County
  • Population from the 2020 Census: 65,017 people
  • Jump to TripAdvisor's Tourism page for Brentwood <5>
• Danville
  (15 miles [24.1 km] to the southwest)
  • Jump to our Gazetteer entry for Danville
  • Danville is located in Contra Costa County
  • Population from the 2020 Census: 44,883 people
  • Former name for Danville:
  • Inmanville
  • Jump to TripAdvisor's Tourism page for Danville <5>
• Oakley
  (9 miles [14.5 km] to the east)
  • Jump to our Gazetteer entry for Oakley
  • Oakley is located in Contra Costa County
  • Population from the 2020 Census: 42,710 people
  • Jump to TripAdvisor's Tourism page for Oakley <5>
• Martinez
  (13 miles [20.9 km] to the west)
  • Jump to our Gazetteer entry for Martinez
  • Martinez is located in Contra Costa County
  • Population from the 2020 Census: 38,027 people
  • Jump to TripAdvisor's Tourism page for Martinez <5>
• Pleasant Hill
  (11 miles [17.7 km] to the southwest)
  • Jump to our Gazetteer entry for Pleasant Hill
  • Pleasant Hill is located in Contra Costa County
  • Population from the 2020 Census: 34,781 people
  • Jump to TripAdvisor's Tourism page for Pleasant Hill <5>

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

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

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

TripAdvisor Tourism Pages for Cornwall ...

Looking for more information about Cornwall? 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 Cornwall, there are neighboring communities that do have Tourism pages. A map of those communities can be found with our TripAdvisor Page for Cornwall.

Adding Cornwall to Our Gazetteer ...

We originally found mention of Cornwall 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 Cornwall was in the book titled Business Atlas and Shippers' Guide (1895).

For more details, see References and Mentions for Cornwall.

Off-the-Road Links ...

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

The official website for Contra Costa County: www.co.contra-costa.ca.us/

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