Georgetown, TX

ZIP code 78627 is a U.S. Postal Service PO Box designation associated with Georgetown, in Williamson County, Texas, rather than a broad residential area with a defined neighborhood footprint. Accordingly, it has no major public landmarks clearly located within its postal boundary. Georgetown’s prominent sites—including the Williamson County Courthouse, Southwestern University, and Inner Space Cavern—are in the wider city, not reliably attributable to 78627 itself.