what county is 75089 in
Zip Code 75089 Demographics. 75089 is located in the state of Texas in the Dallas-Fort Worth metro area. Zip code 75089 is primarily located in Dallas County. Portions of 75089 are also located in Rockwall County.The official postal service name used for 75089 is ROWLETT, Texas. Portions of the 75089 zip code are contained within or border the city limits of Rowlett, TX, Garland, TX, Dallas, TX, and Sachse, TX.ip Code 75089 Time Zone. 75089 is located in the state of Texas in the Dallas-Fort Worth metro area. Zip code 75089 is primarily located in Dallas County. Portions of 75089 are also located in Rockwall County.