- Ransom Canyon - Zip Codes in Ransom Canyon
- Raymondville - Zip Codes in Raymondville
- Red Oak - Zip Codes in Red Oak
- Rhome - Zip Codes in Rhome
- Richardson - Zip Codes in Richardson
- Richmond - Zip Codes in Richmond
- Rio Grande City - Zip Codes in Rio Grande City
- Rio Hondo - Zip Codes in Rio Hondo
- Roanoke - Zip Codes in Roanoke
- Robstown - Zip Codes in Robstown
- Rockdale - Zip Codes in Rockdale
- Rockport - Zip Codes in Rockport
- Rockwall - Zip Codes in Rockwall
- Roma - Zip Codes in Roma
- Rosenberg - Zip Codes in Rosenberg
- Rosharon - Zip Codes in Rosharon
- Round Rock - Zip Codes in Round Rock
- Rowlett - Zip Codes in Rowlett
- Royse City - Zip Codes in Royse City
- Rusk - Zip Codes in Rusk