Kiefer is a town in Creek County, Oklahoma, United States. The population was 2,187 at the 2020 census, a 30% increase over the 1,685 population recorded at the 2010 census, which itself was a 64 percent increase over the 1,026 figure recorded in 2000.
History
Kiefer was originally known as "Praper" when a post office was first established in 1901. The St. Louis, Oklahoma and Southern Railway (later the St. Louis and San Francisco Railway) constructed a line south from Sapulpa through Praper between 1900 and 1901. The route is today operated by BNSF. Praper became an oil boom town by 1906, when it grew into a major shipping point for crude from the Glenn Pool field. The post office was renamed "Kiefer" on December 12, 1906. According to the Encyclopedia of Oklahoma History and Culture, the name honored at least one of three different people named Kiefer who lived in the area.
The Kiefer Searchlight was a weekly newspaper published in Kiefer that included local, state, and national news along with advertising. 123 issues from 1908 to 1911 are available online.
In the 21st century, Kiefer is mostly a commuter town, with 94.6 percent of workers living in town commuting to jobs elsewhere, primarily in Tulsa.
thumb|"Kiefer Castle" in July of 2025
Kiefer is the site of an extensive residence known to locals as the Kiefer Castle, having been built to resemble a fairy-tale castle.
Geography
Kiefer is located in eastern Creek County. U.S. Highway 75A passes through the center of the town, leading north to the center of Sapulpa, the county seat, and south to Mounds. Oklahoma State Highway 67 leads east from Kiefer to the U.S. Route 75 freeway in Glenpool. Via Highways 67 and 75 it is north to downtown Tulsa.
According to the United States Census Bureau, Kiefer has a total area of , of which , or 1.04%, is water.
Education
Kiefer has an elementary, middle, and high school. The school teams are known as the Trojans. At Kiefer public schools, they have many sports such as football, basketball, and baseball, but there are other sports like academic, softball, and E-sports.
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2020 census
As of the 2020 census, Kiefer had a population of 2,187. The median age was 34.2 years. 29.0% of residents were under the age of 18 and 11.8% of residents were 65 years of age or older. For every 100 females there were 91.8 males, and for every 100 females age 18 and over there were 90.2 males age 18 and over.
There were 768 households in Kiefer, of which 44.3% had children under the age of 18 living in them. Of all households, 55.9% were married-couple households, 13.4% were households with a male householder and no spouse or partner present, and 22.8% were households with a female householder and no spouse or partner present. About 17.7% of all households were made up of individuals and 6.7% had someone living alone who was 65 years of age or older.
! Race !! Number !! Percent
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| White || 1,497 || 68.4%
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| Black or African American || 21 || 1.0%
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| American Indian and Alaska Native || 309 || 14.1%
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| Asian || 13 || 0.6%
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| Native Hawaiian and Other Pacific Islander || 3 || 0.1%
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| Some other race || 77 || 3.5%
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| Two or more races || 267 || 12.2%
|-
| Hispanic or Latino (of any race) || 164 || 7.5%
|}
2000 census
As of the census