We present a Spitzer/Herschel focused survey of the Aquila molecular clouds (d~436pc) as part of the eHOPS (extension of the Herschel orion protostar survey, or HOPS, Out to 500 ParSecs) census of nearby protostars. For every source detected in the Herschel/PACS bands, the eHOPS-Aquila catalog contains 1-850{mu}m SEDs assembled from the Two Micron All Sky Survey, Spitzer, Herschel, the Wide-field Infrared Survey Explorer, and James Clerk Maxwell Telescope/SCUBA-2 data. Using a newly developed set of criteria, we classify objects by their SEDs as protostars, pre-main-sequence stars with disks, and galaxies. A total of 172 protostars are found in Aquila, tightly concentrated in the molecular filaments that thread the clouds. Of these, 71 (42%) are Class 0 protostars, 54 (31%) are Class I protostars, 43 (25%) are flat-spectrum protostars, and four (2%) are Class II sources. Ten of the Class 0 protostars are young PACS bright red sources similar to those discovered in Orion. We compare the SEDs to a grid of radiative transfer models to constrain the luminosities, envelope densities, and envelope masses of the protostars. A comparison of the eHOPS-Aquila to the HOPS protostars in Orion finds that the protostellar luminosity functions in the two star-forming regions are statistically indistinguishable, the bolometric temperatures/envelope masses of eHOPS-Aquila protostars are shifted to cooler temperatures/higher masses, and the eHOPS-Aquila protostars do not show the decline in luminosity with evolution found in Orion. We briefly discuss whether these differences are due to biases between the samples, diverging star formation histories, or the influence of environment on protostellar evolution.

Cone search capability for table J/ApJS/266/32/ehops (Classification and best-fit model parameters (Table 4), observed fluxes (Table 2) and comparison with literature catalogs (Table 3) for the eHOPS protostars)

Cone search capability for table J/ApJS/266/32/table7 (*Observation details for Herschel/PACS)

Cone search capability for table J/ApJS/266/32/table8 (*Observation details for Herschel/SPIRE)

Cone search capability for table J/ApJS/266/32/table9 (Fluxes for the pre-main-sequence (pre-MS) stars with disks (Appendix F))

Cone search capability for table J/ApJS/266/32/table10 (Fluxes for galaxies (Appendix G))

Cone search capability for table J/ApJS/266/32/table11 (Fluxes for the candidate protostars (CPs; Appendix H))

Cone search capability for table J/ApJS/266/32/table12 (Fluxes for sources that are outside the Spitzer coverage region (Appendix I))

Cone search capability for table J/ApJS/266/32/table13 (Source comparison between eHOPS catalog and Winston+ 2007, J/ApJ/669/493)

Cone search capability for table J/ApJS/266/32/table14 (Source comparison between eHOPS catalog and Enoch+ 2009, J/ApJ/692/973)

Cone search capability for table J/ApJS/266/32/table15 (*Source comparison between eHOPS catalog and Gutermuth+ 2009, J/ApJS/184/18)

Cone search capability for table J/ApJS/266/32/table16 (Source comparison between eHOPS catalog and Kryukova+ 2012, J/AJ/144/31)

Cone search capability for table J/ApJS/266/32/table17 (Source comparison between eHOPS catalog and Dunham+ 2015, J/ApJS/220/11)