Caldwell County was formed fromLivingston County in 1809. Prior to that, Caldwell County had been part ofChristian,Logan, andLincoln Counties — Lincoln County having been one of the three original counties of Kentucky.
In the early nineteenth-century, Caldwell County witnessed the passage of theforced migration of theCherokee to the West on theTrail of Tears duringIndian removal. The Cherokee camped for several weeks in Caldwell County during the winter of 1838, mainly at Big Springs, now in downtown Princeton; at Skin Frame Creek, and in the Centerville area near Fredonia.
In 1860, the construction of Princeton College began, but it was delayed by theCivil War. Strongly pro-Confederate and one of the counties that sent a secessionist delegate to the Russellville Convention, which signed an Ordinance of Secession forming theConfederate government of Kentucky.Confederate troops camped on the grounds of Princeton College in 1861, using one of its buildings as a hospital when Princeton came under Confederate control. Following the Confederate retreat in early 1862, however, Union soldiers occupied Princeton for the remainder of the war. In December 1864, raiding Kentucky Confederate cavalry commanded by GeneralHylan B. Lyon burned the Caldwell County courthouse in Princeton, since it was being used to house the Union garrison.
The expansion ofrailroads in the late nineteenth century made Princeton an important junction on several major railway lines, most notably theIllinois Central and theLouisville & Nashville.
By the turn of the century, an agricultural boom in Dark Fired Tobacco had made Caldwell County, along with Christian County, a major tobacco-growing area. It was part of what was called the "Black Patch", which used a special process to cure the tobacco. It included about 30 counties in western Kentucky and Tennessee. But the monopolization of the tobacco market byJames B. Duke, who formed theAmerican Tobacco Company, forced prices lower, leaving many farmers in debt and discontented.
In response, planters formed the Dark Tobacco DistrictPlanters' Protective Association of Kentucky and Tennessee (PPA), to work together in pooling their commodity in order to gain higher prices. They initially used persuasion to urge other farmers to join them.
Under the leadership of Dr.David Amoss ofCobb in Caldwell County, a vigilante force calledthe Night Riders was formed to strengthen the persuasion. The Night Riders terrorized those who cooperated with the tobacco company by destroying crops, burning warehouses, and attacking individuals. The Night Riders took over Princeton one night in December 1906, burning all of the Duke tobacco warehouses. They raided other towns, conducting similar raids and destroying resources. The "Black Patch Wars" came to an end around 1908, finally suppressed with the aid of the Kentucky state militia.
Since 1925, Caldwell County has housed theUniversity of Kentucky Research and Education Center, a campus of the University of Kentucky's College of Agriculture. The "UKREC" in Princeton is a leader in horticultural and biological sciences.
In the mid-twentieth century, Caldwell County began to shift from agriculture to industrialization. Caldwell County is still largely agricultural, but it is also home to factories such as Bremner, the largest private cookie and cracker factory in North America.
According to theU.S. Census Bureau, the county has a total area of 348 square miles (900 km2), of which 345 square miles (890 km2) is land and 3.4 square miles (8.8 km2) (1.0%) is water.[3]
As of the2020 census, the county had a population of 12,649. The median age was 44.2 years. 21.7% of residents were under the age of 18 and 21.7% of residents were 65 years of age or older. For every 100 females there were 94.2 males, and for every 100 females age 18 and over there were 90.6 males age 18 and over.[9][10]
47.9% of residents lived in urban areas, while 52.1% lived in rural areas.[11]
There were 5,277 households in the county, of which 28.4% had children under the age of 18 living with them and 28.5% had a female householder with no spouse or partner present. About 30.1% of all households were made up of individuals and 15.1% had someone living alone who was 65 years of age or older.[9]
There were 6,082 housing units, of which 13.2% were vacant. Among occupied housing units, 74.3% were owner-occupied and 25.7% were renter-occupied. The homeowner vacancy rate was 1.9% and the rental vacancy rate was 8.7%.[9]
As of thecensus[12] of 2000, there were 13,060 people, 5,431 households, and 3,801 families residing in the county. Thepopulation density was 38 per square mile (15/km2). There were 6,126 housing units at an average density of 18 per square mile (6.9/km2). The racial makeup of the county was 93.89%White, 4.81%Black orAfrican American, 0.15%Native American, 0.16%Asian, 0.01%Pacific Islander, 0.39% fromother races, and 0.60% from two or more races. 0.61% of the population wereHispanic orLatino of any race.
There were 5,431 households, out of which 28.50% had children under the age of 18 living with them, 57.10% weremarried couples living together, 9.80% had a female householder with no husband present, and 30.00% were non-families. 27.50% of all households were made up of individuals, and 14.00% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 2.85.
In the county, the population was spread out, with 22.40% under the age of 18, 7.00% from 18 to 24, 26.30% from 25 to 44, 26.30% from 45 to 64, and 18.00% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 92.60 males. For every 100 females age 18 and over, there were 89.90 males.
The median income for a household in the county was $28,686, and the median income for a family was $35,258. Males had a median income of $31,475 versus $20,390 for females. Theper capita income for the county was $16,264. About 12.20% of families and 15.90% of the population were below thepoverty line, including 20.40% of those under age 18 and 15.60% of those age 65 or over.