​Utah Low Cost Spay/Neuter Locations:

State-wide:
Humane Society of Utah 
Big Fix Mobile Spay Neuter Clinic

Cache County:
Cache Humane Society. Logan, UT

Davis County:
Heartsong Spay Neuter Clinic

Grand County:
Humane Society of Moab Valley 

Salt Lake County:
Salt Lake City Spay & Neuter. Murray, UT 
Best Friends of Utah

Utah County:
Utah County Fix Clinic C/O Utah County Animal Shelter. Orem, UT
Best Friends Spay & Neuter Assistance