Costilla County, Colorado
Costilla County: County in Colorado, United States
About
Costilla County is a county located in the U.S. state of Colorado. As of the 2010 census, the population was 3,524 and a population density of 1 people per km². After 10 years in 2020 county had an estimated population of 3,921 inhabitants. Its county seat is San Luis. The county was created 163 years ago in 1861.
Quick Facts about Costilla County
| Population : | 3,921 (2020) |
| Country : | United States of America |
| State : | Colorado (United States) |
| Area : | 3187 km2 |
| Water as percent of area : | 0.3% |
| Land as percent of area : | 99.7% |
| Altitude : | 8,035 feet / 2449 meters |
| Capital : | San Luis |
| Establishment : | November 11, 1861 |
| Time Zone : | America/Denver |
| Local time : | 23:01:13 (22nd February 2025) |
| Density : | 1 Pop. per km² as of 2020 |
| Population growth : | 10.12% (2010-2020) |
Geography
Costilla County is located at 37°16'41"N 105°25'42"W (37.2781000, -105.4282700). It has 6 neighbors: Conejos County, Huerfano County, Las Animas County, Colfax County, Taos County and Alamosa County.
Costilla County map
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The largest city of Costilla County is San Luis with a population of 692. Other cities include and Blanca population 407. See all Costilla County cities & populated places.
Costilla County Populated Places
Cities, towns, neighborhoods & other populated places in Costilla County.
| City Name | Population | Title |
|---|---|---|
| San Luis | 692 | County seat of Costilla County, Colorado, United States |
| Blanca | 407 | Human settlement in Costilla County, Colorado, United States of America |
- Official Website
Official website of Costilla County
Costilla County has 6 neighbours.
- Conejos County county in Colorado, United States
- Huerfano County county in Colorado, United States
- Las Animas County county in Colorado, United States
- Colfax County county in New Mexico, United States
- Taos County county in New Mexico, United States
- Alamosa County county in Colorado, United States
Demographics
The population of Costilla County increased by 10.12% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 3,524 | - | census |
| 2011 | 3,641 | 3.21% | estimation process |
| 2012 | 3,603 | -1.05% | estimation process |
| 2013 | 3,541 | -1.75% | estimation process |
| 2014 | 3,561 | 0.56% | estimation process |
| 2015 | 3,576 | 0.42% | estimation process |
| 2016 | 3,693 | 3.17% | estimation process |
| 2017 | 3,756 | 1.68% | estimation process |
| 2018 | 3,812 | 1.47% | estimation process |
| 2019 | 3,887 | 1.93% | estimation process |
| 2020 | 3,921 | 0.87% | estimation process |
Colorado Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Denver | 735,538 | The twentieth most populous city in the United States and the center of the Denver metropolitan area. |
| Denver County | 735,538 | County in Colorado, United States, coterminous with the City of Denver |
| El Paso County | 728,310 | One of the 64 counties in the U. |
| Arapahoe County | 657,452 | County in Colorado, United States |
| Jefferson County | 583,283 | County in Colorado, United States |
| Adams County | 519,883 | County in Colorado, United States |
| Colorado Springs | 482,131 | The second most populous city in Colorado and the center of the Colorado Springs metropolitan area. |
| Aurora | 387,377 | The third most populous city in Colorado and the center of the Denver metropolitan area. |
| Douglas County | 360,750 | County in Colorado, United States |
| Larimer County | 360,428 | County in Colorado, United States |
| Weld County | 333,983 | County in Colorado, United States |
| Boulder County | 327,171 | County in Colorado, United States |
| Pueblo County | 169,823 | County in Colorado, United States |
| Fort Collins | 168,234 | The fifth most populous city in Colorado. |
| Lakewood | 157,429 | The fifth most populous city in Colorado. |
| Mesa County | 155,603 | County in Colorado, United States |
