Arroyo Seco has a post office, with the ZIP code 87514. The 87514 ZIP Code Tabulation Area had a population of 1,310 at the 2000 census, with 996 housing units, a land area of 53.63 sq. miles, a water area of 0.05 sq. miles, and a population density of 24.43 people per sq. mile at Census 2000. Arroyo Seco's elevation is 7,634 feet.
Overlooking Arroyo Seco stands Lucero Peak, a 10,780 foot rock formation. Housed in the Peak is a cave that is sacred to the local Native American population of Taos Pueblo. The cave inspired D.H. Lawrence's short story "The Woman who Rode Away" after he visited it in May 1924 with Mabel Dodge Luhan, her husband Tony, and Lawrence's wife Frieda.
Arroyo Seco's annual Fourth of July parade is locally popular.
The words "She wrote her name there on my windshield, Just to remind me where she was from' Tina Louise, Arroyo Seco, New Mexico, 1971" in the Commander Cody and the Lost Planet Airmen song Tina Louise from their 1976 album Tales From the Ozone.