I could not find it anywhere in the Ford Technical Service Publication CD, but most cars idle at around 750 RPM.
You might want to search through the owner's manual and see if you find anything.
1996 Contour SE Sedan 4D (Royal Blue)
Duratec V6 2.5L 24-valve DOHC
Automatic
75,000 miles
No Mods (unless you call the DMD a mod)
Replaced EGR valve (gunked up), EVR (EGR VR), PCV valve, and evaporative emissions hose (cracked).
| 
