Here's the tax rates for Somervell and surrounding counties. All tax rates are per $100 valuation listed in order of highest cost to lowest with Johnson County being the highest in tax rates with Hood County being lowest in tax rates. 

Johnson County taxes total:
Johnson County 0.384700
Cleburne ISD 1.528300
Hill College .044494
City of Cleburne 0.773206
Non-city total: 1.957494
City total: 2.7307

Somervell County taxes total:
Somervell County 0.5375
Hospital District  0.158665
Water District 0.1290
Glen Rose ISD - 1.039
City of Glen Rose 0.384074
Non-city total: 1.864165
City total: 2.248239

Erath County 0.3434
RER 0.1126
Stephenville ISD 1.2729
Middle Trinity Water 0.0094
City of Stephenville 0.47
Non-city total: 1.7383
City total: 2.2083

Bosque County taxes total:
Bosque County 0.51820
Bosque County Hospital District 0.15
Walnut Springs ISD .9499
Emergency Services District .043100
Conservation Groundwater District .009400
City of Walnut Springs .474100
Non-city total: 1.6706
City total: 2.1447

Hood County taxes total:
Hood County 0.377793
Granbury ISD 1.125
library .010444
lateral road .039781
City of Granbury 0.399385
Non-city total: 1.553018
City total: 1.952403

Source: The central appraisal districts for Somervell, Hood, Johnson, Bosque, and Erath Counties.