'San Luis' definitions:

San Luis, AZ -- U.S. city in Arizona

From: Gazetteer 2000
Name :
San Luis, AZ -- U.S. city in Arizona
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
Note :
some ZIP codes may be omitted esp. for suburbs.

San Luis, CO -- U.S. town in Colorado

From: Gazetteer 2000
Name :
San Luis, CO -- U.S. town in Colorado
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
Note :
some ZIP codes may be omitted esp. for suburbs.