Regional Codes ...
For statistical purposes, the US Census Bureau has divided the country into four Regions. Aleppo is located in Region #2 (the Midwest Region).
In turn, the US Census Bureau has further divided each Region into Divisions. Aleppo is located in Division #4 (the West North-Central Division).
The Office of Management and Budget (OMB) has created ten Federal Regions. Aleppo is located in Region VII (Region 7).
Referenced FIPS Records ...
FIPS Code: 20/01000 (Place Name: Aleppo)
County: Sedgwick (FIPS State/County: 20/173)
Identifies a populated place (in this case, Aleppo) located wholly or substantially outside the boundaries of an incorporated place or CDP (Census Designated Place) but whose name has not been verified as authoritative by the U.S. Geological Survey (USGS).
MSA Code: 9040