NOT including the rear sight, compacts/Officer's are approximately 4-7/8" from the front of the frame/magwell to the top of the slide. A fullsize/Commander is about 5-1/4" tall.
If you have a fullsize 1911, you can measure down about 3-3/4" from the bottom of the slide (just above the grip panel area) and put some tape or a rubberband at this point, and then do the same on the slide--measuring about 6" from the rear of the slide. This will help you visualize the dimensions of the compact Colts.
Colt 'ULTRA TEN' 10mm, Colt LWT Officers, Colt Clapp Commander, Colt Clapp CCO, Sig P220 9mm (now 9x23), STI Elektra (9x23), Springfield LWT Compact compensated .45, Springfield LWT V10 Ultra, Kimber Aegis Pro, Sig P239 .357sig.