B737-700
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 292
Situational Awareness; Confusion
Ground Event / Encounter Other / Unknown
Flight Crew Became Reoriented
Human Factors; Airport
Our taxi out clearance from ATC was: Runway 21 via Bravo; Charlie; Alpha; and hold short of Runway 15.  While taxiing northeast on Taxiway Charlie; we were looking for signage or taxiway markings to indicate Taxiway Alpha.  None existed.  We were able to determine Taxiway Alpha by referencing the taxi diagram and counting taxiways.  We did not miss our turn.  This lack of proper signage and markings could be very hazardous at night or low visibility conditions.
The reporter reiterates that there are definitely no painted markings on the taxiway's and he is almost certain there are no vertical taxiway signs.
B737 Captain reports a lack of taxiway signs and markings at CHS.