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Welcome to Jefferson County ...

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

The community of Oskaloosa is the Seat for Jefferson County.

Jefferson County is one of the original counties of Kansas and was founded August 25, 1855.

From the Census Estimates for 2019, <1> Jefferson had a population of 19,043 people. This is a decrease of 0.41% since the last Census (which gave a population of 19,121 people in 2010).

At the time of the 2010 Census, Jefferson represented 0.67% of the total population of Kansas.

Below are some of the communities located in Jefferson County:

  • McLouth
    (10 miles [16.1 km] to the east)
    • McLouth is located in Jefferson County (KS)
    • Jump to our Gazetteer entry for McLouth
    • Population from the 2020 Census: 838 people
    • Jump to TripAdvisor's Tourism page for McLouth <2>
  • Meriden
    (10 miles [16.1 km] to the west)
    • Meriden is located in Jefferson County (KS)
    • Jump to our Gazetteer entry for Meriden
    • Population from the 2020 Census: 776 people
    • Jump to TripAdvisor's Tourism page for Meriden <2>
  • Nortonville
    (12 miles [19.3 km] to the north)
  • Oskaloosa
    (4 miles [6.4 km] to the east)
    • Oskaloosa is located in Jefferson County (KS)
    • Jump to our Gazetteer entry for Oskaloosa
    • Population from the 2020 Census: 1,057 people
    • Jump to TripAdvisor's Tourism page for Oskaloosa <2>
  • Ozawkie
    (3 miles [4.8 km] to the west)
    • Ozawkie is located in Jefferson County (KS)
    • Jump to our Gazetteer entry for Ozawkie
    • Population from the 2020 Census: 622 people
    • Jump to TripAdvisor's Tourism page for Ozawkie <2>
  • Perry
    (10 miles [16.1 km] to the south)
    • Perry is located in Jefferson County (KS)
    • Jump to our Gazetteer entry for Perry
    • Population from the 2020 Census: 908 people
    • Jump to TripAdvisor's Tourism page for Perry <2>
  • Valley Falls
    (8 miles [12.9 km] to the northwest)
    • Valley Falls is located in Jefferson County (KS)
    • Jump to our Gazetteer entry for Valley Falls
    • Population from the 2020 Census: 1,152 people
    • Valley Falls has also been known as:
    • Sautrelle
    • Jump to TripAdvisor's Tourism page for Valley Falls <2>
  • Winchester
    (8 miles [12.9 km] to the northeast)

Websites of Interest ...

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.