Place:Costilla, Colorado, United States

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NameCostilla
Alt namesCostillasource: Getty Vocabulary Program
TypeCounty
Coordinates37.267°N 105.433°W
Located inColorado, United States     (1861 - )
See alsoAlamosa, Colorado, United StatesChild county (source: Source:Population of States and Counties of the United States: 1790-1990)
Rio Grande, Colorado, United StatesChild county (source: Source:Population of States and Counties of the United States: 1790-1990)
Contained Places
Census-designated place
Fort Garland
Inhabited place
Blanca
Chama
Eastdale
Garcia
Garland City
Jaroso
La Valley
La Veta Pass
Lasauses
Los Fuertes
Mesita
Mortimer
Russell
San Acacio
San Luis
San Pablo
San Pedro
Viejo San Acacio
source: Getty Thesaurus of Geographic Names
source: Family History Library Catalog


the text in this section is copied from an article in Wikipedia

Costilla County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 3,499.[1] The county seat is San Luis, the oldest continuously occupied town in Colorado.

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History

the text in this section is copied from an article in Wikipedia

On July 8, 1694, Spanish Conquistador Don Diego de Vargas and his army, two weeks before the Battle of Astialakwa, reached Costilla County. Diego Vargas is not the first Spaniard in Colorado. Juan de Archuleta led an expedition into Colorado in 1664 - but his expedition is the first traceable Spanish expedition into Colorado. In 1647, Governor Luis Rosas fought with the Utes in northern New Mexico. While Rosa came near Colorado, it has not been verified he actually did.

Costilla County was the first area of Colorado to be settled by European-Americans. Hispanic settlers from Taos, New Mexico, officially established San Luis on April 9, 1851. Costilla County was one of the original 17 counties created by the Territory of Colorado on November 1, 1861. The county was named for Costilla Creek. Although San Miguel was originally designated the county seat, the county government was moved to San Luis in 1863.

The county's original boundaries extended over much of south-central Colorado. Much of the northern portion became part of Saguache County in 1866, and the western portions were folded into Hinsdale and Rio Grande counties in 1874. Costilla County arrived at its modern boundaries in 1913 when Alamosa County was created from its northwest portions.

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Timeline

Date Event Source
1861 County formed Source:Red Book: American State, County, and Town Sources
1861 Land records recorded Source:Red Book: American State, County, and Town Sources
1863 Marriage records recorded Source:Red Book: American State, County, and Town Sources
1870 First census Source:Population of States and Counties of the United States: 1790-1990
1876 Court records recorded Source:Red Book: American State, County, and Town Sources
1876 Probate records recorded Source:Red Book: American State, County, and Town Sources
1920 No significant boundary changes after this year Source:Population of States and Counties of the United States: 1790-1990
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Population History

source: Source:Population of States and Counties of the United States: 1790-1990
Census Year Population
1870 1,779
1880 2,879
1890 3,491
1900 4,632
1910 5,498
1920 5,032
1930 5,779
1940 7,533
1950 6,067
1960 4,219
1970 3,091
1980 3,071
1990 3,190
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Cemeteries

Cemeteries of Costilla County, Colorado, United States

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Research Tips

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