Have you tried setting your scanner to try that frequency as digital, instead of the analog usage in the database? A number of the rural counties in Texas have switched to using a P25 (digital) conventional channel instead of remaining analog. Which scanner are you using?
Also, I see this license listing for Yoakum that is not currently shown in the database.
FCC Callsign WQDK971 (YOAKUM, COUNTY OF)
www.radioreference.com
The "notes" on the license state that is is for law enforcement usage. Try programming the listed repeater frequency, 151.075, as both digital and analog. Depending on which scanner, if it is digital capable, you may be able to set it as simply "search" without specifying analog or digital.
If you find any corrected usage, please submit an update to the database.
I'm in Dallas, but maybe someone else in the Panhandle area has found something & will answer you as well.