RoadsideThoughts
A Gazetteer for the United States and Canada
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Welcome to Riverhead ...

Riverhead is located in Suffolk County<1> and is the County Seat for Suffolk County.

While we don't have a date for the founding of Riverhead, you might consider that their post office opened  in 1855.

Riverhead is near sea level<2>.

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

Area Codes for Riverhead: 631 & 934<3>

The ZIP code for Riverhead: 11901<4>

Communities Also Named Riverhead ...

Using our Gazetteer, we found that there are 11 communities that are also named Riverhead - they are located in Florida, Newfoundland and Labrador (9) and Nova Scotia.

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

Websites for Riverhead ...

Official Website: www.riverheadli.com/

Communities near Riverhead ...

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

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

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

We also have a detailed list of newspapers that have been published in the area around Riverhead. Our list includes 16 papers. See our Newspapers Page for Riverhead.

TripAdvisor Tourism Pages for Riverhead ...

Looking for more information about Riverhead? 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 Riverhead, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Riverhead.

Adding Riverhead to Our Gazetteer ...

We originally found mention of Riverhead 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 Riverhead was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<7>

From that list, the Riverhead post office opened in 1855.

We also found Riverhead in the book titled List of Post Offices in the United States (1870).

For more details, see References and Mentions for Riverhead.

Footnotes ...

<1>If you're interested in how the shape of New York's counties, including Suffolk, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>The elevation is an estimate for the area around Riverhead - it will be higher in some places and lower in others.
<3>When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 631 code has been Overlayed with the 934 area code. New phone numbers in the Riverhead area will be assigned with one of these codes: 631 or 934. As a result, placing a call in the Riverhead area will require 10-digit dialing (where you enter both the area code and then the phone number).
<4>ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a community (such as Riverhead). When looking for a ZIP Code, whether Riverhead or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<5>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<6>The location has been supplied by the Geographic Names Information System - which is maintained by the U.S. Geological Survey (USGS). While these values should be definitive, we found that accuracy can vary and you should double-check the location if accuracy is required.
<7>A copy of their list with background information can be found at:

      https://cblevins.github.io/us-post-offices/data-biography/