| City: | Durham, North Carolina |
| City Alias: | Research Triangle Park, Rtp |
| Names to Avoid: | Environ Protect Agency, Research Triangle Pk |
| County: | Durham County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:36:23 PM |
| Population: | No Population Data |
| Area Codes: | 919 / 984 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 35.9939, -78.8986 |
| Quick Link: |
ZIP code 27711 serves the U.S. Environmental Protection Agency's Research Triangle Park facility in Durham County, North Carolina. The EPA established its main research campus on T.W. Alexander Drive in 1971 as one of the anchor institutions of the Research Triangle Park, the nation's largest research park. The facility houses EPA's Office of Research and Development and conducts environmental research supporting federal policy and regulations. The USPS has maintained this dedicated postal designation for over two decades.
Postal records identify 1 ZIP+4 code routing mail to the Environmental Protection Agency facility. County Business Patterns data shows 10 establishments employing 191 workers within this ZIP boundary, consistent with a major federal research facility. Both Durham and Research Triangle Park (RTP) are valid mailing cities for this designation. Census demographic data is not available, as the area functions primarily as a research campus rather than a residential area.
| Establishments: | 10 |
| Employment: | 191 |
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 27711 supports both business and residential activity. According to the Business Census (2024), there are 10 business establishments, employing about 220 people with an annual payroll of $20,593,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 0Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 10Source: CBP |
| 1st Quarter Payroll: | $5,591,000Source: CBP |
| Annual Payroll: | $20,593,000Source: CBP |
| # of Employees: | 220Source: CBP |
ZIP Code 27711 is located in Durham County, North Carolina, within the Durham-Chapel Hill, NC Metropolitan Statistical Area (CBSA 20500) and North Carolina's 4th Congressional District. This Metro area has a population of 594,291 people, about 0.00% of whom live in ZIP Code 27711. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Durham-Chapel Hill, NCSource: Census |
| CBSA Number: | 20500Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 594,291Source: Census |
| MSA: | Raleigh-Durham-Chapel Hill, NC MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 04Source: USPS |
| Congressional Land Area: | 1045.35 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 3719000Source: Census |
| Place Name: | Durham city; North CarolinaSource: Census |
We could not locate which school district 27711 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.