Williamson County GIS & Addressing staff provides the addressing for the unincorporated areas of the County as well as for several of the smaller incorporated Cities. Our addressing staff is currently awaiting final approval of Williamson County 9-1-1 Addressing Guidelines, however; the draft version can be located here.
To review a basic list of agreed upon addressing guidelines by the addressing jurisdictions within Williamson County please click here.
In addition, the staff maintains the master address database that drives the 9-1-1 landline telephone system for the entire County.