Zip Code 78628 — Georgetown, TX
78628 is a ZIP Code associated with Georgetown, TX, located within Williamson. 78628 ranks #5 out of 19 ZIP codes in Williamson County by population (and #139 out of 1,990 in TX). The area supports an estimated population of 50,822 residents across Data Pending housing units, with a population density of 303.2 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (30.639810, -97.746360)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 78628 |
| Primary City | Georgetown |
| State / Province | TX |
| County | Williamson |
| Total Population | 50,822 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 303.2 people/sq mi |
| Timezone | America/Chicago |
How 78628 Compares
| Metric | ZIP 78628 | Williamson County | TX State Average |
|---|
| Population | 50,822 | 591,187 (Total) | 30,188,035 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 303.2 /sq mi | -- | -- |
| County Pop Rank | #5 of 19 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →