Regional Codes ...
For statistical purposes, the US Census Bureau has divided the country into four Regions. Mud Creek would have been located in Region #3 (the South Region).
In turn, the US Census Bureau has further divided each Region into Divisions. Mud Creek would have been located in Division #6 (the East South-Central Division).
The Office of Management and Budget (OMB) has created ten Federal Regions. Mud Creek would have been located in Region IV (Region 4).
Referenced GNIS Records ...
GNIS ID #139227 (Name of Record: Mud Creek (historical))
Class: populated place
A place or area having clustered or scattered buildings and a permanent population (such as a city, settlement, town or village). The boundaries may or may not coincide with the perceived population.
A 'populated place' record may have a corresponding 'census' or 'civil' record. The information contained in the 'populated place' record applies only to the class and should not be confused with either the 'census' and 'civil' classes.
Map Name: Mud Creek
Lat: 34.822862 Lon: -86.0574815 [Map]
Elev: 205 ft.
Referenced FIPS Records ...
FIPS Code: 01/52704 (Place Name: Mud Creek)
County: Jackson (FIPS State/County: 01/071)
Identifies a populated place (in this case, Mud Creek) 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).