Welcome to Jefferson ...

The city of Jefferson is located in Union County<1>.

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

While we don't have a date for the founding of Jefferson, you might consider that their post office opened  in 1873.

From the  Census Estimates for 2019, Jefferson has a population of 515 people<3> (see below for details).

Jefferson is 1,110 feet [338 m] above sea level.<4>.

Time Zone: Jefferson lies in the Central Time Zone (CST/CDT) and observes daylight saving time

The area code for Jefferson: (605)

Population Details ...

Taken from the 2019 Census Estimates, Jefferson had an population of 515 people. This is a decrease of 5.85% since the 2010 Census (or a decrease of 12.12% since the 2000 Census).

At the time of the 2010 Census, Jefferson had a population of 547 people. This makes Jefferson the county's 5th most populous community.

The population of Jefferson represents 0.07% of the total population of South Dakota (which has 814,180 people), making it the state's 147th most populous community.

With a 2010 count of 547 people, the population of Jefferson decreased 6.66% from the 2000 Census (with a count of 586 people).

More information can be found on the Census Page for Jefferson.

Communities Also Named Jefferson ...

Using our Gazetteer, we found that there are 58 communities that are also named Jefferson - they are located in Alabama (2), Arkansas (2), California, Colorado (2), Georgia (3), Illinois, Indiana, Iowa, Kansas (3), Louisiana (2), Maine, Maryland, Massachusetts, Michigan (4), Mississippi (2), Montana, Nevada, New Hampshire, New Jersey, New York (2), North Carolina, Nova Scotia, Ohio (5), Oklahoma, Ontario, Oregon, Pennsylvania (5), South Carolina, Tennessee (2), Texas, Virginia (2), Washington, West Virginia (2) and Wisconsin.

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

Communities near Jefferson ...

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

• Sioux City
  (11 miles [17.7 km] to the southeast)
  • Jump to our Gazetteer entry for Sioux City
  • Sioux City is located in Woodbury County (IA)
  • Population from the 2020 Census: 82,759 people
  • Jump to TripAdvisor's Tourism page for Sioux City <5>
• South Sioux City
  (12 miles [19.3 km] to the southeast)
  • Note: The GPS coordinates that we are using for South Sioux City have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for South Sioux City
  • South Sioux City is located in Dakota County (NE)
  • Population from the 2020 Census: 12,833 people
  • Jump to TripAdvisor's Tourism page for South Sioux City <5>
• Sergeant Bluff
  (17 miles [27.4 km] to the southeast)
  • Note: The GPS coordinates that we are using for Sergeant Bluff have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Sergeant Bluff
  • Sergeant Bluff is located in Woodbury County (IA)
  • Population from the 2020 Census: 5,119 people
  • Jump to TripAdvisor's Tourism page for Sergeant Bluff <5>
• North Sioux City
  (5 miles [8 km] to the southeast)
  • Note: The GPS coordinates that we are using for North Sioux City have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for North Sioux City
  • North Sioux City is located in Union County
  • Population from the 2020 Census: 2,952 people
  • Jump to TripAdvisor's Tourism page for North Sioux City <5>
• Elk Point
  (8 miles [12.9 km] to the northwest)
  • Note: The GPS coordinates that we are using for Elk Point have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Elk Point
  • Elk Point is located in Union County
  • Population from the 2020 Census: 1,874 people
  • Jump to TripAdvisor's Tourism page for Elk Point <5>
• Dakota City
  (14 miles [22.5 km] to the southeast)
  • Jump to our Gazetteer entry for Dakota City
  • Dakota City is located in Dakota County (NE)
  • Population from the 2020 Census: 1,863 people
  • Jump to TripAdvisor's Tourism page for Dakota City <5>
• Akron
  (15 miles [24.1 km] to the north)
  • Note: The GPS coordinates that we are using for Akron have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Akron
  • Akron is located in Plymouth County (IA)
  • Population from the 2020 Census: 1,454 people
  • Jump to TripAdvisor's Tourism page for Akron <5>
• Hinton
  (13 miles [20.9 km] to the east)
  • Jump to our Gazetteer entry for Hinton
  • Hinton is located in Plymouth County (IA)
  • Population from the 2020 Census: 954 people
  • Jump to TripAdvisor's Tourism page for Hinton <5>
• Ponca
  (7 miles [11.3 km] to the west)
  • Jump to our Gazetteer entry for Ponca
  • Ponca is located in Dixon County (NE)
  • Population from the 2020 Census: 913 people
  • Jump to TripAdvisor's Tourism page for Ponca <5>
• Merrill
  (17 miles [27.4 km] to the northeast)
  • Note: The GPS coordinates that we are using for Merrill have been provided by the GNIS.<2> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Merrill
  • Merrill is located in Plymouth County (IA)
  • Population from the 2020 Census: 723 people
  • Jump to TripAdvisor's Tourism page for Merrill <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 Jefferson. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Jefferson.

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

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

TripAdvisor Tourism Pages for Jefferson ...

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

Adding Jefferson to Our Gazetteer ...

We originally found mention of Jefferson 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 Jefferson was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<6>

From that list, the Jefferson post office opened in 1873.

We also found Jefferson in the book titled Business Atlas and Shippers' Guide (1895).

For more details, see References and Mentions for Jefferson.

Off-the-Road Links ...

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

The official website for State of South Dakota: sd.gov/