| City: | Round Rock, Texas |
| County: | Williamson County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 9:25:22 PM |
| Population: | No Population Data |
| Area Code: | 512 |
| Classification: | PO Box |
| Coordinates: | 30.5082, -97.6789 |
| Quick Link: |
ZIP 78680 serves a commercial corridor along Sam Bass Road in Round Rock, Texas. This isn't a residential area. It's a postal facility point that provides PO Box and business delivery services to a concentrated commercial zone within Williamson County.
The post office maintains 633 PO Boxes and serves 495 business delivery points. All street delivery addresses fall on a single street, Sam Bass Road, where 110 unit designators handle business suites and commercial spaces. With 17 business establishments employing 143 workers, this ZIP serves as a mail hub for local commerce rather than a residential community.
Round Rock's standard ZIP codes (including 78681, which geographically contains this point location) handle residential delivery for the broader city. ZIP 78680 exists specifically for PO Box services and concentrated business mail. The city delivery indicator shows "Y", confirming carrier service availability in the area, though the PO Box classification means this particular ZIP focuses on box holders and commercial clients.
For PO Box holders:
PO Box [Number]
Round Rock, TX 78680For business addresses on Sam Bass Road:
[Number] Sam Bass Rd Unit [X]
Round Rock, TX 78680Only one street with unit-based addressing for business suites.
ZIP Code 78680 supports both business and residential activity. According to the Business Census (2024), there are 21 business establishments, employing about 194 people with an annual payroll of $6,171,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,104Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 21Source: CBP |
| 1st Quarter Payroll: | $1,398,000Source: CBP |
| Annual Payroll: | $6,171,000Source: CBP |
| # of Employees: | 194Source: CBP |
ZIP Code 78680 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 2,357,497 people, about 0.00% of whom live in ZIP Code 78680. 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: | 2,357,497Source: 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: | 4863500Source: Census |
| Place Name: | Round Rock city; TexasSource: Census |
We could not locate which school district 78680 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 January 1, 2026.