| City: | Austin, Texas |
| County: | Travis County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 9:26:44 PM |
| Population: | No Population Data |
| Area Code: | 512 |
| Classification: | PO Box |
| Coordinates: | 30.2667, -97.7428 |
| Quick Link: |
This postal designation serves as an overflow facility for the surrounding Austin area. The facility operates with one street-based carrier route delivering to 140 addresses on Northcross Drive itself. Most customers using 78766 as their mailing address live or work in nearby neighborhoods like Crestview, Wooten, and North Shoal Creek. The single-street service area reflects its function as a centralized mailbox facility rather than a community postal zone.
Only one street appears in this ZIP's records: Northcross Drive, where the PO Box facility itself is located. The 140 delivery points with unit designations suggest this is the physical facility address rather than a traditional street delivery route.
ZIP Code 78766 supports both business and residential activity. According to the Business Census (2024), there are 15 business establishments, employing about 56 people with an annual payroll of $1,958,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 734Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 15Source: CBP |
| 1st Quarter Payroll: | $467,000Source: CBP |
| Annual Payroll: | $1,958,000Source: CBP |
| # of Employees: | 56Source: CBP |
ZIP Code 78766 is located in Travis County, Texas, within the Austin-Round Rock-San Marcos, TX Metropolitan Statistical Area (CBSA 12420) and Texas's 37th Congressional District. This Metro area has a population of 2,357,497 people, about 0.00% of whom live in ZIP Code 78766. 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: | 37Source: USPS |
| Congressional Land Area: | 0 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 4805000Source: Census |
| Place Name: | Austin city; TexasSource: Census |
We could not locate which school district 78766 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.