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 2026 population of 642. It is also the county seat of Costilla County. San Luis is currently growing at a rate of 1.1% annually and its population has increased by 7% since the most recent census, which recorded a population of 600 in 2020.

The median household income in San Luis is $26,708 with a poverty rate of 21.56%. The median age in San Luis is 43.9 years: 49.1 years for males, and 43.7 years for females. For every 100 females there are 93.8 males.

642
Total Population
1,133
Density (mi²)
7 1.1%
Growth

San Luis Population

San Luis Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202664271.1%
202563571.11%
2024628101.62%
202361820.32%
2022616-2-0.32%
2021618183%
202060010.17%
201969960.87%
201869360.87%
2017687142.08%
2016673213.22%
201565260.93%
201464620.31%
2013644-7-1.08%
2012651-2-0.31%
2011653243.82%
201062900%

Median Age

Overall: 43.9 years
Female: 43.7 years
Male: 49.1 years

San Luis Adults

There are 459 adults, (68 of whom are seniors) in San Luis.

Sex Ratio

Female: 289 (51.6%)
Male: 271 (48.4%)

Demographics

The racial composition of San Luis includes 19.29% other race, 18.93% White, 6.61% Native American, 3.93% Asian, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
Two or more races27849.64%
Other race10819.29%
White10618.93%
Native American376.61%
Asian223.93%
Black or African American91.61%
Race
Population ↓
Percentage (of total)
Two or more races26547.32%
Other race10819.29%
White407.14%
Native American376.61%
Race
Population ↓
Percentage (of total)
White6611.79%
Asian223.93%
Two or more races132.32%
Black or African American91.61%

San Luis Marital Status

Economics and Income Statistics

San Luis ' average per capita income is $27,434. Household income levels show a median of $26,708. The poverty rate stands at 21.56%.

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
Families$26,964$45,822
Households$26,708$44,013
Non Families$24,712$37,651
Married Families--

$27,434

Average Income

$26,708

Median Household Income

21.56%

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)