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

Rio is located in Martin County<1>.

While we don't have a date for the founding of Rio, you might consider that their post office opened in 1897.

Rio is near sea level<2>.

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

Area Code for Rio: 772

Communities Also Named Rio ...

Using our Gazetteer, we found that there are 12 communities that are also named Rio - they are located in Georgia, Illinois, Kansas, Kentucky, Louisiana, Mississippi, New York, North Dakota, Utah, Virginia, West Virginia and Wisconsin.

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

Communities near Rio ...

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

  • Port Saint Lucie
    (8 miles [12.9 km] to the northwest)
  • Fort Pierce
    (16 miles [25.7 km] to the north)
  • Tequesta
    (19 miles [30.6 km] to the southeast)
  • Jupiter Island
    (14 miles [22.5 km] to the southeast)
    • Jupiter Island is located in Martin County
    • Jump to our Gazetteer entry for Jupiter Island
    • Population from the 2020 Census: 941 people
  • Saint Lucie
    (19 miles [30.6 km] to the north)
    • Saint Lucie is located in Saint Lucie County
    • Jump to our Gazetteer entry for Saint Lucie
    • Population from the 2020 Census: 648 people
  • Saint Lucie Village
    (19 miles [30.6 km] to the north)
    • Saint Lucie Village is located in Saint Lucie County
    • Jump to our Gazetteer entry for Saint Lucie Village
    • Estimated population in 2015: 619 people
  • Hutchinson Island South
    (5 miles [8 km] to the north)
  • Port Salerno
    (5 miles [8 km] to the southeast)
  • Indian River Estates
    (10 miles [16.1 km] to the northwest)
    • Indian River Estates is located in Saint Lucie County
    • Jump to our Gazetteer entry for Indian River Estates
  • Hobe Sound
    (12 miles [19.3 km] to the southeast)

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

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

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

TripAdvisor Tourism Pages for Rio ...

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

Adding Rio to Our Gazetteer ...

We originally found mention of Rio 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 (so far) for Rio was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<4>

From that list, the Rio post office opened in 1897. The Rio post office closed in 1927.

For more details, see References and Mentions for Rio.

Footnotes ...

<1>If you're interested in how the shape of Florida's counties, including Martin, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>The elevation is an estimate for the area around Rio - it will be higher in some places and lower in others.
<3>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<4>A copy of the Blevins & Helbock Post Office list with background information can be found at:

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