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We quantify the fraction of the cosmic infrared background (CIB) thatoriginates from galaxies identified in the UV/optical/near-infrared by stacking81,250 (~35.7 arcmin^2) K-selected sources (K_AB < 24.0), split according totheir rest-frame U - V vs. V - J colors into 72,216 star-forming and 9,034quiescent galaxies, on maps from Spitzer/MIPS (24um), Herschel/SPIRE (250, 350,500um), Herschel/PACS (100, 160um), and AzTEC (1100um). The fraction of the CIBresolved by our catalog is (69 $\pm$ 15)% at 24um, (78 $\pm$ 17)% at 70um, (58$\pm$ 13)% at 100um, (78 $\pm$ 18)% at 160um, (80 $\pm$ 17)% at 250um, (69$\pm$ 14)% at 350um, (65 $\pm$ 12)% at 500um, and (45 $\pm$ 8)% at 1100um. Ofthat total, about 95% originates from star-forming galaxies, while theremaining 5% is from apparently quiescent galaxies. The CIB at $\lambda$ <200um is sourced predominantly from galaxies at z < 1, while at $\lambda$ >200um the bulk originates from 1 < z < 2. Galaxies with stellar masses log(M/M_sun)=9.5-11 are responsible for the majority of the CIB, with those in thelog(M/ M_sun)=9.5-10 contributing mostly at $\lambda$ < 250um, and those in thelog(M/ M_sun)=10.5-11 bin dominating at $\lambda$ > 350um. The contributionfrom galaxies in the log(M/ M_sun)=9.0-9.5 and log(M/ M_sun)=11.0-12.0 stellarmass bins contribute the least, both of order 5%, although the higheststellar-mass bin is a significant contributor to the luminosity density at z >2. The luminosities of the galaxies responsible for the CIB shifts from acombination of "normal" and luminous infrared galaxies (LIRGs) at $\lambda$ <160um, to LIRGs at 160um < $\lambda$ < 500um, to finally LIRGs andultra-luminous infrared galaxies (ULIRGs) at $\lambda$ > 500um. Stackinganalyses were performed with SIMSTACK (available athttp://www.astro.caltech.edu/~viero/viero_homepage/toolbox.html) which accountsfor possible biases due to clustering.

HerMES: The Contribution to the Cosmic Infrared Background from Galaxies Selected by Mass and Redshift