Check your Costilla County registration.
Confirm what Colorado has on file first, then use Costilla County's official election channels below.
Check my registration with Scan Check ProtectUse the official Colorado lookup
County profile
About Costilla County
Costilla County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 3,499. The county seat is San Luis, the oldest continuously occupied town in Colorado.
Description adapted from Wikipedia, CC BY-SA 4.0.
At a glance
Costilla County at a glance
- County seat
- San Luis
- Population
- 3,499 (2020)
- Land area
- 1,231 sq mi
- Founded
- 1861
Communities
Largest communities in Costilla County
| Community | Population |
|---|---|
| San Luis County seat | 598 |
| Fort Garland | 464 |
| Blanca | 322 |
| San Acacio | 56 |
History
History of Costilla County
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 – 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 have been colonized. The county made up the major part of the Sangre de Cristo Land Grant awarded by the government of New Mexico to the Charles H. Beaubien family in 1843. 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.
Adapted from Wikipedia, CC BY-SA 4.0.
Start here
Confirm you're ready to vote in Costilla County
-
1 · Run a guided check
Scan Check Protect walks you through verifying your Colorado registration and flags anything that needs fixing — free.
-
2 · Ask Costilla County directly
Your county election office handles registration, mail ballots, and polling places.
Official channels
Costilla County election resources
Statewide tools and every Colorado resource in one place: the Colorado page at Scan Check Protect →
Neighbors
Neighboring counties
About
Part of Colorado Voter Check
This is the Costilla County page of Colorado Voter Check, a project of True the Vote, pointing Colorado voters at the official tools that already exist — and at Scan Check Protect to verify your registration.
Where anything here differs from what Costilla County or the Colorado Secretary of State publishes, they are right and this page is not.