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Welcome to Jefferson County ...
Time Zone: Jefferson County lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time.
The community of Watertown is the Seat for Jefferson County.
Jefferson County was founded in 1805 and was created by taking area from Oneida County.
From the Census Estimates for 2019, <1> Jefferson had a population of 109,834 people. This is a decrease of 5.8% since the last Census (which gave a population of 116,592 people in 2010).
At the time of the 2010 Census, Jefferson represented 0.6% of the total population of New York.
Below are some of the communities located in Jefferson County:
- Adams
(16 miles [25.7 km] to the south)
- Adams is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Adams
- Population from the 2020 Census: 1,687 people
- Jump to TripAdvisor's Tourism page for Adams <2>
- Alexandria
(19 miles [30.6 km] to the north)
- Alexandria is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Alexandria
- Population from the 2020 Census: 3,840 people
- Alexandria Bay
(20 miles [32.2 km] to the north)
- Antwerp
(20 miles [32.2 km] to the northeast)
- Black River
(7 miles [11.3 km] to the east)
- Brownville
(2 miles [3.2 km] to the southwest)
- Cape Vincent
(20 miles [32.2 km] to the west)
- Carthage
(17 miles [27.4 km] to the east)
- Continue List (34 more) ...
- Champion
(13 miles [20.9 km] to the east)
- Champion is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Champion
- Population from the 2020 Census: 4,236 people
- Chaumont
(9 miles [14.5 km] to the west)
- Clayton
(15 miles [24.1 km] to the northwest)
- Deferiet
(13 miles [20.9 km] to the east)
- Dexter
(5 miles [8 km] to the southwest)
- Ellisburg
(23 miles [37 km] to the southwest)
- Evans Mills
(7 miles [11.3 km] to the northeast)
- Glen Park
(2 miles [3.2 km] to the south)
- Glen Park is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Glen Park
- Population from the 2020 Census: 462 people
- Henderson
(17 miles [27.4 km] to the southwest)
- Henderson is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Henderson
- Population from the 2020 Census: 1,287 people
- Hounsfield
(14 miles [22.5 km] to the southwest)
- Hounsfield is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Hounsfield
- Population from the 2020 Census: 3,301 people
- Le Ray
(7 miles [11.3 km] to the east)
- Le Ray is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Le Ray
- Population from the 2020 Census: 20,680 people
- Lorraine
(19 miles [30.6 km] to the south)
- Lorraine is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Lorraine
- Population from the 2020 Census: 970 people
- Lyme
(13 miles [20.9 km] to the west)
- Lyme is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Lyme
- Population from the 2020 Census: 2,034 people
- Mannsville
(23 miles [37 km] to the south)
- Orleans
(11 miles [17.7 km] to the north)
- Orleans is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Orleans
- Population from the 2020 Census: 2,658 people
- Pamelia
(Less than 2 miles to the northeast)
- Pamelia is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Pamelia
- Population from the 2020 Census: 2,837 people
- Philadelphia
(14 miles [22.5 km] to the northeast)
- Rodman
(13 miles [20.9 km] to the south)
- Rodman is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Rodman
- Population from the 2020 Census: 1,109 people
- Rutland
(9 miles [14.5 km] to the southeast)
- Rutland is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Rutland
- Population from the 2020 Census: 2,845 people
- Sackets Harbor
(10 miles [16.1 km] to the southwest)
- Theresa
(14 miles [22.5 km] to the northeast)
- Theresa is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Theresa
- Population from the 2020 Census: 766 people
- Watertown
(7 miles [11.3 km] to the south)
- Watertown is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Watertown
- Population from the 2020 Census: 4,426 people
- West Carthage
(16 miles [25.7 km] to the east)
- West Carthage is located in Jefferson County (NY)
- Jump to our Gazetteer entry for West Carthage
- Population from the 2020 Census: 1,901 people
- Wilna
(17 miles [27.4 km] to the east)
- Wilna is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Wilna
- Population from the 2020 Census: 5,787 people
- Worth
(20 miles [32.2 km] to the south)
- Worth is located in Jefferson County (NY)
- Jump to our Gazetteer entry for Worth
- Population from the 2020 Census: 219 people
Websites of Interest ...
- Websites specific to New York
- Websites specific to Jefferson County
- Websites for nearby counties
- Saint Lawrence County
- Lewis County
- Oswego County
- Cemetery Information and Directories
Footnotes ...
| <1> | On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census. |
| <2> | While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program. |
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