What is "san luis"

Population (2000): 15322
Housing Units (2000): 3325
Land area (2000): 26.437806 sq. miles (68.473600 sq. km)
Water area (2000): 0.026670 sq. miles (0.069074 sq. km)
Total area (2000): 26.464476 sq. miles (68.542674 sq. km)
FIPS code: 63470
Located within: Arizona (AZ), FIPS 04
Location: 32.496116 N, 114.768327 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:

Population (2000): 739
Housing Units (2000): 376
Land area (2000): 0.475173 sq. miles (1.230692 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 0.475173 sq. miles (1.230692 sq. km)
FIPS code: 68105
Located within: Colorado (CO), FIPS 08
Location: 37.201988 N, 105.422360 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords: