Jefferson County, Kansas

**Jefferson County** (county code **JF**) is a county in the U.S. state of Kansas. In 2020, 18,368 people lived there. Its county seat is Oskaloosa. Its biggest city is Valley Falls.

## Geography

The U.S. Census Bureau says that the county has a total area of . Of that,  is land and  (4.3%) is water.

## People

Jefferson County is included in the Topeka, KS Metropolitan Statistical Area.

### Presidential elections

|Year|Republican|Democratic|Third Parties|||||
| --- | --- | --- | --- | --- | --- | --- | --- |
|style="text-align:center;"|**2020**|style="text-align:center;"|**64.8%** _6,334_|style="text-align:center;"|32.7% _3,194_|style="text-align:center; background:honeyDew;"|2.6% _254_|
|style="text-align:center;"|**2016**|style="text-align:center;"|**61.8%** _5,213_|style="text-align:center;"|29.8% _2,518_|style="text-align:center; background:honeyDew;"|8.4% _709_|
|style="text-align:center;"|**2012**|style="text-align:center;"|**60.2%** _4,827_|style="text-align:center;"|37.2% _2,977_|style="text-align:center; background:honeyDew;"|2.6% _209_|
|style="text-align:center;"|**2008**|style="text-align:center;"|**58.3%** _5,220_|style="text-align:center;"|39.6% _3,542_|style="text-align:center; background:honeyDew;"|2.1% _188_|
|style="text-align:center;"|**2004**|style="text-align:center;"|**61.5%** _5,408_|style="text-align:center;"|37.0% _3,253_|style="text-align:center; background:honeyDew;"|1.5% _132_|
|style="text-align:center;"|**2000**|style="text-align:center;"|**56.2%** _4,423_|style="text-align:center;"|38.1% _3,000_|style="text-align:center; background:honeyDew;"|5.8% _454_|
|style="text-align:center;"|**1996**|style="text-align:center;"|**49.3%** _3,781_|style="text-align:center;"|36.0% _2,757_|style="text-align:center; background:honeyDew;"|14.7% _1,130_|
|style="text-align:center;"|**1992**|style="text-align:center;"|33.0% _2,569_|style="text-align:center;"|32.6% _2,538_|style="text-align:center; background:honeyDew;"|**34.4%** _2,673_|
|style="text-align:center;"|**1988**|style="text-align:center;"|**55.5%** _3,605_|style="text-align:center;"|43.3% _2,810_|style="text-align:center; background:honeyDew;"|1.2% _77_|
|style="text-align:center;"|**1984**|style="text-align:center;"|**68.9%** _4,524_|style="text-align:center;"|30.3% _1,990_|style="text-align:center; background:honeyDew;"|0.8% _49_|
|style="text-align:center;"|**1980**|style="text-align:center;"|**64.6%** _4,046_|style="text-align:center;"|28.4% _1,776_|style="text-align:center; background:honeyDew;"|7.0% _441_|
|style="text-align:center;"|**1976**|style="text-align:center;"|**55.1%** _3,225_|style="text-align:center;"|42.2% _2,470_|style="text-align:center; background:honeyDew;"|2.7% _156_|
|style="text-align:center;"|**1972**|style="text-align:center;"|**72.7%** _3,679_|style="text-align:center;"|24.4% _1,237_|style="text-align:center; background:honeyDew;"|2.9% _145_|
|style="text-align:center;"|**1968**|style="text-align:center;"|**56.6%** _2,781_|style="text-align:center;"|27.6% _1,355_|style="text-align:center; background:honeyDew;"|15.9% _779_|
|style="text-align:center;"|**1964**|style="text-align:center;"|**53.1%** _2,380_|style="text-align:center;"|46.1% _2,066_|style="text-align:center; background:honeyDew;"|0.9% _39_|
|style="text-align:center;"|**1960**|style="text-align:center;"|**65.7%** _3,353_|style="text-align:center;"|34.1% _1,739_|style="text-align:center; background:honeyDew;"|0.2% _9_|
|style="text-align:center;"|**1956**|style="text-align:center;"|**70.2%** _3,677_|style="text-align:center;"|29.3% _1,536_|style="text-align:center; background:honeyDew;"|0.4% _22_|
|style="text-align:center;"|**1952**|style="text-align:center;"|**73.5%** _3,980_|style="text-align:center;"|26.1% _1,411_|style="text-align:center; background:honeyDew;"|0.5% _26_|
|style="text-align:center;"|**1948**|style="text-align:center;"|**59.0%** _2,986_|style="text-align:center;"|39.7% _2,010_|style="text-align:center; background:honeyDew;"|1.2% _62_|
|style="text-align:center;"|**1944**|style="text-align:center;"|**68.7%** _3,504_|style="text-align:center;"|30.9% _1,575_|style="text-align:center; background:honeyDew;"|0.4% _19_|
|style="text-align:center;"|**1940**|style="text-align:center;"|**65.8%** _4,330_|style="text-align:center;"|33.6% _2,212_|style="text-align:center; background:honeyDew;"|0.6% _38_|
|style="text-align:center;"|**1936**|style="text-align:center;"|**54.3%** _3,711_|style="text-align:center;"|45.4% _3,105_|style="text-align:center; background:honeyDew;"|0.4% _25_|
|style="text-align:center;"|**1932**|style="text-align:center;"|47.4% _2,974_|style="text-align:center;"|**50.8%** _3,185_|style="text-align:center; background:honeyDew;"|1.8% _112_|
|style="text-align:center;"|**1928**|style="text-align:center;"|**74.8%** _4,810_|style="text-align:center;"|24.9% _1,601_|style="text-align:center; background:honeyDew;"|0.3% _22_|
|style="text-align:center;"|**1924**|style="text-align:center;"|**72.7%** _4,422_|style="text-align:center;"|21.7% _1,320_|style="text-align:center; background:honeyDew;"|5.6% _340_|
|style="text-align:center;"|**1920**|style="text-align:center;"|**68.9%** _3,463_|style="text-align:center;"|30.5% _1,535_|style="text-align:center; background:honeyDew;"|0.6% _31_|
|style="text-align:center;"|**1916**|style="text-align:center;"|**50.5%** _3,174_|style="text-align:center;"|46.4% _2,919_|style="text-align:center; background:honeyDew;"|3.1% _193_|
|style="text-align:center;"|**1912**|style="text-align:center;"|29.8% _1,155_|style="text-align:center;"|**39.6%** _1,537_|style="text-align:center; background:honeyDew;"|30.7% _1,190_|
|style="text-align:center;"|**1908**|style="text-align:center;"|**55.6%** _2,270_|style="text-align:center;"|42.1% _1,720_|style="text-align:center; background:honeyDew;"|2.3% _95_|
|style="text-align:center;"|**1904**|style="text-align:center;"|**65.3%** _2,568_|style="text-align:center;"|30.5% _1,199_|style="text-align:center; background:honeyDew;"|4.3% _168_|
|style="text-align:center;"|**1900**|style="text-align:center;"|**54.7%** _2,374_|style="text-align:center;"|44.0% _1,912_|style="text-align:center; background:honeyDew;"|1.3% _57_|
|style="text-align:center;"|**1896**|style="text-align:center;"|**50.0%** _2,322_|style="text-align:center;"|49.0% _2,276_|style="text-align:center; background:honeyDew;"|1.0% _47_|
|style="text-align:center;"|**1892**|style="text-align:center;"|**50.0%** _2,026_||style="text-align:center; background:honeyDew;"|50.0% _2,030_||
|style="text-align:center;"|**1888**|style="text-align:center;"|**57.0%** _2,268_|style="text-align:center;"|40.2% _1,601_|style="text-align:center; background:honeyDew;"|2.8% _110_|

### Unified school districts

- Valley Falls USD 338
- Jefferson County North USD 339
- Jefferson West USD 340
- Oskaloosa USD 341
- McLouth USD 342
- Perry-Lecompton USD 343

### Cities

- McLouth
- Meriden
- Nortonville
- Oskaloosa
- Ozawkie
- Perry
- Valley Falls
- Winchester

## References

- Notes

## More reading

- _Standard Atlas of Jefferson County, Kansas_; Geo. A. Ogle & Co; 69 pages; 1916.
- _Descriptive Atlas of Jefferson County, Kansas_; Acme Publishing Co; 44 pages; 1899.

## Other websites

- County
- Jefferson County - Directory of Public Officials
- Jefferson County - Economic Development
- Maps
- Jefferson County Maps: Current , Historic , KDOT
- Kansas Highway Maps: Current , Historic , KDOT
- Kansas Railroad Maps: Current , 1996, 1915, KDOT and Kansas Historical Society

## Infobox (u.s. county)

- **county**: Jefferson County
- **state**: Kansas
- **type**: County (United States), County
- **ex image**: Jefferson county courthouse kansas.jpg
- **ex image cap**: Jefferson County Courthouse in Oskaloosa, Kansas, Oskaloosa (1971)
- **founded**: August 25, 1855
- **named for**: Thomas Jefferson
- **seat wl**: Oskaloosa
- **largest city wl**: Valley Falls
- **area total sq mi**: 557
- **area land sq mi**: 533
- **area water sq mi**: 24
- **area percentage**: 4.3%
- **population as of**: 2020
- **population total**: 18368
- **population density sq mi**: 34.5
- **district**: 1st
- **time zone**: Central