San Luis, CO Profile: Facts & Data


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San Luis, Colorado - Basic Facts

The Town of San Luis had a population of 699 as of July 1, 2020. San Luis ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Colorado. See peer rankings below.

The primary coordinate point for San Luis is located at latitude 37.2008 and longitude -105.4239 in Costilla County. The formal boundaries for the Town of San Luis encompass a land area of 0.56 sq. miles and a water area of 0 sq. miles. Costilla County is in the Mountain time zone (GMT -7). The elevation is 7,982 feet.

The Town of San Luis (GNIS ID: 2413253) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Colorado is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Town of San Luis is located within San Luis Division of Costilla County.

Alternate Unofficial Names for San Luis: Culebra, Plaza del Medio, San Luis de Culebra.


San Luis, CO Data & Demographics (As of July 1, 2020)


Total Population 699 (100%)
Population in Households 699 (100.0%)
Population in Families 521 (74.5%)
Population in Group Quarters1 0
Population Density 1,233
Diversity Index2 74


Median Household Income $25,427
Average Household Income $31,908
% of Income for Mortgage4 17%
Per Capita Income $14,724
Wealth Index5 23


Total HU (Housing Units) 409 (100%)
Owner Occupied HU 147 (35.9%)
Renter Occupied HU 170 (41.6%)
Vacant Housing Units 92 (22.5%)
Median Home Value $104,286
Average Home Value $120,946
Housing Affordability Index3 152


Total Households 317
Average Household Size 2.21
Family Households 181
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2020 2020-2025
Population 1.03% 0.9%
Households 1.08% 0.93%
Families 0.79% 0.87%
Median Household Income   1.14%
Per Capita Income   1.67%
Owner Occupied HU   1.32%


San Luis, CO - Peer Comparisons by Rank and Percentile

The table below compares San Luis to the other 459 incorporated cities, towns and CDPs in Colorado by rank and percentile using July 1, 2020 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 254 45th
Population Density # 158 66th
Median Household Income # 455 1st
Housing Affordability Index # 314 68th
Per Capita Income # 452 2nd
Diversity Index # 35 93rd

Additional comparisons and rankings can be made with a VERY EASY TO USE Colorado Census Data Comparison Tool.

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