Thornhill

County:: Jefferson County
County Seat:: No
Area (mi²):: 0.045
State:: Kentucky

Thornhill is a city located in Jefferson County, Kentucky. Thornhill has a 2025 population of 180. Thornhill is currently declining at a rate of -0.55% annually and its population has decreased by -2.17% since the most recent census, which recorded a population of 184 in 2020.

The average household income in Thornhill is $166,151 with a poverty rate of 0.61%. The median age in Thornhill is 42.5 years: 41.5 years for males, and 44 years for females.

Demographics

The racial composition of Thornhill includes 95.09% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	155	95.09%
Two or more races	5	3.07%
Black or African American	2	1.23%
Native American	1	0.61%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Thornhill Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Thornhill's average per capita income is $98,750. Household income levels show a median of $151,250. The poverty rate stands at 0.61%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$171,875	-
Families	$171,250	$218,093
Households	$151,250	$166,151
Non Families	$81,250	$82,069

$98,750

Average Income

$151,250

Median Household Income

0.61%

Poverty Rate