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Las Animas County, Colorado facts for kids

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Not to be confused with Las Animas, Colorado.
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Las Animas County
Las Animas County Courthouse in Trinidad
Las Animas County Courthouse in Trinidad
Map of Colorado highlighting Las Animas County
Location within the U.S. state of Colorado
Map of the United States highlighting Colorado
Colorado's location within the U.S.
Country  United States
State  Colorado
Founded February 9, 1866
Named for Animas River
Seat Trinidad
Largest city Trinidad
 • Total 4,775 sq mi (12,370 km2)
 • Land 4,773 sq mi (12,360 km2)
 • Water 2.7 sq mi (7 km2)  0.06%%
 • Estimate 
 • Density 3.2/sq mi (1.2/km2)
Time zone UTC−7 (Mountain)
 • Summer (DST) UTC−6 (MDT)
Congressional district 4th
Statue of Liberty replica, Trinidad, CO IMG 5027
Statue of Liberty replica at the Las Animas Courthouse in Trinidad
Trinidad, CO, Public Library IMG 5020
Public library in Trinidad serves Las Animas County.

Las Animas County is one of the 64 counties in the U.S. state of Colorado. As of the 2010 census, the population was 15,507. The county seat is Trinidad. The county takes its name from the Mexican Spanish name of the Purgatoire River, originally called El Río de las Ánimas Perdidas en Purgatorio, which means "River of the Lost Souls in Purgatory."


According to the U.S. Census Bureau, the county has a total area of 4,775 square miles (12,370 km2), of which 4,773 square miles (12,360 km2) is land and 2.7 square miles (7.0 km2) (0.06%) is water. It is the largest county by area in Colorado.

Adjacent counties

Protected areas

Historic trails and landmarks

Scenic byways


Historical population
Census Pop.
1870 4,276
1880 8,903 108.2%
1890 17,208 93.3%
1900 21,842 26.9%
1910 33,643 54.0%
1920 38,975 15.8%
1930 36,008 −7.6%
1940 32,369 −10.1%
1950 25,902 −20.0%
1960 19,983 −22.9%
1970 15,744 −21.2%
1980 14,897 −5.4%
1990 13,765 −7.6%
2000 15,207 10.5%
2010 15,507 2.0%
Est. 2015 14,058 −9.3%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2015

As of the census of 2000, there were 15,207 people, 6,173 households, and 4,092 families residing in the county. The population density was 3 people per square mile (1/km²). There were 7,629 housing units at an average density of 2 per square mile (1/km²). The racial makeup of the county was 82.63% White, 0.39% Black or African American, 2.54% Native American, 0.37% Asian, 0.20% Pacific Islander, 10.03% from other races, and 3.83% from two or more races. 41.45% of the population were Hispanic or Latino of any race.

There were 6,173 households out of which 28.80% had children under the age of 18 living with them, 49.90% were married couples living together, 11.60% had a female householder with no husband present, and 33.70% were non-families. 29.70% of all households were made up of individuals and 14.30% had someone living alone who was 65 years of age or older. The average household size was 2.40 and the average family size was 2.97.

In the county, the population was spread out with 24.20% under the age of 18, 7.90% from 18 to 24, 24.00% from 25 to 44, 25.90% from 45 to 64, and 18.00% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 95.80 males. For every 100 females age 18 and over, there were 93.70 males.

The median income for a household in the county was $28,273, and the median income for a family was $34,072. Males had a median income of $27,182 versus $20,891 for females. The per capita income for the county was $16,829. About 14.00% of families and 17.30% of the population were below the poverty line, including 20.00% of those under age 18 and 17.20% of those age 65 or over.


Historic American Buildings Survey Frederick D. Nichols, Photographer August 1936 VIEW OF FRONT AND SIDE - Santa Nina de Atoche, Tijeras Plaza, Tijeras, Las Animas County, CO HABS COLO,36-TIJER,1-1
Santa Nina de Atoche church, Tijeras Plaza, Las Animas County, c.1934
Philatelic cover postmarked Officer, Colorado on the last day of service. Mail from this discontinued post office was then handled at Villegreen, Colorado, now also a discontinued post office.



Census-designated places

Unincorporated communities

Ghost towns

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