Welcome to Adelphi ...

Adelphi is primarily located in Prince George's County<1>. A portion of Adelphi extends into Montgomery County.

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

Adelphi was established in 1796.

Adelphi is 170 feet [52 m] above sea level.<3>.

Time Zone: Adelphi lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time

Telephone area codes for Adelphi: (301) & (240)<4>

Communities Also Named Adelphi ...

Using our Gazetteer, we found that there are 4 communities that are also named Adelphi - they are located in Iowa, New York and Ohio (2).

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

Communities near Adelphi ...

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

• Arlington
  (11 miles [17.7 km] to the southwest)
  • Jump to our Gazetteer entry for Arlington
  • Arlington is located in Arlington County (VA)
  • Population from the 2010 Census: 207,627 people
  • Jump to TripAdvisor's Tourism page for Arlington <5>
• Alexandria
  (14 miles [22.5 km] to the south)
  • Jump to our Gazetteer entry for Alexandria
  • Alexandria is located in Alexandria City (VA)
  • Population from the 2020 Census: 158,726 people
  • Jump to TripAdvisor's Tourism page for Alexandria <5>
• Rockville
  (11 miles [17.7 km] to the northwest)
  • Jump to our Gazetteer entry for Rockville
  • Rockville is located in Montgomery County
  • Population from the 2020 Census: 69,512 people
  • Jump to TripAdvisor's Tourism page for Rockville <5>
• Gaithersburg
  (15 miles [24.1 km] to the northwest)
  • Jump to our Gazetteer entry for Gaithersburg
  • Gaithersburg is located in Montgomery County
  • Population from the 2020 Census: 67,741 people
  • Jump to TripAdvisor's Tourism page for Gaithersburg <5>
• Bowie
  (13 miles [20.9 km] to the east)
  • Jump to our Gazetteer entry for Bowie
  • Bowie is located in Prince George's County
  • Population from the 2020 Census: 58,212 people
  • Jump to TripAdvisor's Tourism page for Bowie <5>
• Laurel
  (8 miles [12.9 km] to the northeast)
  • Note: The GPS coordinates that we are using for Laurel have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Laurel
  • Laurel is located in Prince George's County
  • Population from the 2020 Census: 25,548 people
  • Jump to TripAdvisor's Tourism page for Laurel <5>
• Greenbelt
  (4 miles [6.4 km] to the east)
  • Note: The GPS coordinates that we are using for Greenbelt have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Greenbelt
  • Greenbelt is located in Prince George's County
  • Population from the 2020 Census: 23,229 people
  • Jump to TripAdvisor's Tourism page for Greenbelt <5>
• Hyattsville
  (3 miles [4.8 km] to the south)
  • Note: The GPS coordinates that we are using for Hyattsville have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Hyattsville
  • Hyattsville is located in Prince George's County
  • Population from the 2020 Census: 18,217 people
  • Jump to TripAdvisor's Tourism page for Hyattsville <5>
• Vienna
  (17 miles [27.4 km] to the southwest)
  • Jump to our Gazetteer entry for Vienna
  • Vienna is located in Fairfax County (VA)
  • Population from the 2020 Census: 16,518 people
  • Jump to TripAdvisor's Tourism page for Vienna <5>
• Falls Church
  (13 miles [20.9 km] to the southwest)
  • Jump to our Gazetteer entry for Falls Church
  • Falls Church is located in Falls Church City (VA)
  • Population from the 2020 Census: 14,631 people
  • Jump to TripAdvisor's Tourism page for Falls Church <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 Adelphi. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Adelphi.

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

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

TripAdvisor Tourism Pages for Adelphi ...

Looking for more information about Adelphi? 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.

In addition to the Tourism page for Adelphi, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Adelphi.

Adding Adelphi to Our Gazetteer ...

We originally found mention of Adelphi in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.

From our notes, the earliest published mention we've found for Adelphi was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<6>

From that list, the Adelphi post office opened in 1880.

For more details, see References and Mentions for Adelphi.

Off-the-Road Links ...

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

The official website for Prince George's County: www.co.pg.md.us/

The official website for State of Maryland: https://www.maryland.gov/