I am looking for the Granbury, TX City police and the Hood County, TX Sheriff Department frequencies
Look at the Hood County database page.
Scanner Frequencies and Radio Frequency Reference for Hood County, Texas (TX)
www.radioreference.com
Granbury PD is using 453.700 for Dispatch in P25 (digital) mode, but fully encrypted.
Hood County has a Vhf-high frequency, 158.7675, also P25, NAC 7F3 used for dispatch, plus a 700MHz frequency, 769.75625, NAC 400. The 700MHz frequency is encrypted full time, and was the one used most last time I was in their area.
What scanner do you have?