| City: | Walburg, Texas |
| County: | Williamson County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 9:51:11 AM |
| Population: | No Population Data |
| Area Codes: | 512 / 737 |
| Classification: | PO Box |
| Coordinates: | 30.7364, -97.5801 |
| Quick Link: |
Walburg operates as a PO Box-only community in northern Williamson County. The post office maintains 93 PO Boxes serving customers who use this location for mail delivery.
Street delivery isn't available through this ZIP code. One rural carrier route operates in the area, connecting to FM 972, but residential delivery comes through neighboring ZIP codes. That's typical for small Texas communities where a post office serves as a central mail hub while actual street delivery happens under different ZIP codes.
FM 972 is the only street recorded in this ZIP code's delivery data. Farm-to-Market roads like FM 972 are characteristic of rural Texas, connecting small communities to larger highway systems.
ZIP Code 78673 is designated for PO Box delivery only; business establishment and employment data are not available.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 108Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 0Source: CBP |
| 1st Quarter Payroll: | $0Source: CBP |
| Annual Payroll: | $0Source: CBP |
| # of Employees: | 0Source: CBP |
ZIP Code 78673 is located in Williamson County, Texas, within the Austin-Round Rock-San Marcos, TX Metropolitan Statistical Area (CBSA 12420) and Texas's 31st Congressional District. This Metro area has a population of 1,716,289 people, about 0.00% of whom live in ZIP Code 78673. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Austin-Round Rock-San Marcos, TXSource: Census |
| CBSA Number: | 12420Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 1,716,289Source: Census |
| MSA: | Austin-San Marcos, TX MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 31Source: USPS |
| Congressional Land Area: | 2154.49 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | --Source: Census |
| Place Name: | --Source: Census |
We could not locate which school district 78673 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.