San Luis

County:: Costilla County
County Seat:: Yes
Area (mi²):: 0.567
State:: Colorado

San Luis is a town located in Costilla County, Colorado. San Luis has a 2025 population of 635. It is also the county seat of Costilla County. San Luis is currently growing at a rate of 1.11% annually and its population has increased by 5.48% since the most recent census, which recorded a population of 602 in 2020.

The average household income in San Luis is $43,127 with a poverty rate of 37.37%. The median age in San Luis is 38.7 years: 37.4 years for males, and 41.1 years for females.

Demographics

The racial composition of San Luis includes 46.22% White, 24.4% other race, 3.44% Native American, and smaller percentages for Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Other race

Two or more races

Native American

Black or African American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	269	46.22%
Other race	142	24.4%
Two or more races	136	23.37%
Native American	20	3.44%
Black or African American	9	1.55%
Asian	6	1.03%
Native Hawaiian or Pacific Islander	0	0%

San Luis Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

San Luis' average per capita income is $36,667. Household income levels show a median of $30,481. The poverty rate stands at 37.37%.

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	$72,829	-
Families	$32,292	$49,470
Households	$30,481	$43,127
Non Families	$20,833	$28,699

$36,667

Average Income

$30,481

Median Household Income

37.37%

Poverty Rate