San Luis Flag

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.

635
Total Population
1,120
Density (mi²)
7 1.11%
Growth

San Luis Population

San Luis Population

Data after 2023 is projected based on recent change

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 and multiracial populations.

Population by Race

White (46.2%)

Other race (24.4%)

Two or more races (23.4%)

Native American (3.4%)

Black or African American (1.6%)

Asian (1.0%)

Race
Population
Percentage (of total)
White26946.22%
Other race14224.4%
Two or more races13623.37%
Native American203.44%
Black or African American91.55%
Asian61.03%

San Luis Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)