| City: | Durham, North Carolina |
| City Alias: | Research Triangle Park, Rtp |
| County: | Durham County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 7:54:11 PM |
| Population: | 5 [See All] |
| Area Codes: | 919 / 984 |
| Classification: | PO Box |
| Coordinates: | 35.9137, -78.8633 |
| Land Area: | 5.732 sq mi |
| Quick Link: |
The post office maintains 456 PO Boxes for a service area with just one occupied household. That adoption rate of 456.0 makes this one of the most unusual ZIP codes in North Carolina. The boxes don't serve residents because there aren't any. They serve the 586 businesses and research facilities that operate here, including IBM, pharmaceutical companies, and dozens of biotech firms. TW Alexander Drive alone accounts for 171 delivery records with unit designations, making it the central corridor for this business park.
The facility mix tells the story. ZIP+4 data shows 273 street delivery records and 137 PO Box records, with three named buildings receiving dedicated mail service. The Census Bureau counts five people living here with a median age of 36.5 years, likely security staff or facility managers in on-site housing. The 60% Hispanic population reflects a service workforce rather than traditional neighborhood demographics.
Research Triangle Park operates as a delivery hub for organizations that need reliable business mail. Park Offices Drive has 22 records with suite designations. Sancar Way shows seven suite records for newer laboratory buildings. The mix of rural routes (107 records) and city routes (166 records) reflects the park's position at the edge of Durham's urban core, where corporate research facilities meet undeveloped buffer land.
Street names reflect Research Triangle Park's identity as a planned research campus, with TW Alexander Drive serving as the main corridor and scientific names like Sancar Way (named after Nobel laureate Aziz Sancar) marking newer developments.
ZIP Code 27709 has 5 residents and 1 households (average 5.00 persons per household). The median age is 36.5 years, slightly younger than the state (39.4) and slightly younger than the nation (38.8). The gender split is 60.0% male and 40.0% female, which is much higher than the state male share (48.5%), making this a male-majority area. Largest groups are Hispanic or Latino (60.0%) and White (20.0%, much lower than the state average of 62.2% and well below the national average of 61.6%); Hispanic or Latino residents make up 60.0%, which is much higher than the state average (10.7%), and Other / Two or More Races share is much higher than both the state (5.9%) and national averages (8.4%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 5Source: Census DHC |
| 2024 ACS Population Estimate: | 0Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 0.9 people per sq mile |
| Average Income: | $0Source: Census ACS |
| Households: | 1Source: Census DHC |
| Average House Value: | $666,666,666Source: Census ACS |
| Persons Per Household: | 5.00Source: Census DHC |
| Average Family Size: | 0.00Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 488 | 658 | 822 | 734 | 909 | 1,149 | 1,173 | 914 | 1,152 | 1,115 | 0 | 0 | 0 | 0 |
| Decennial Census | 1,047 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 5 | -- | -- | -- | -- |
Median Age: 36.5
Male Median Age: 36.5
Female Median Age: 42
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| Female | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| White: | 1 | 20.00% |
| Black: | 0 | 0% |
| Hispanic:* | 3 | 60.00% |
| Asian: | 0 | 0% |
| American Indian: | 0 | 0% |
| Hawaiian: | 0 | 0% |
| Other: | 1 | 20.00% |
| Total: | 5 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 3 | 60.00% | 36.5 years |
| Females: | 2 | 40.00% | 42.0 years |
| Total: | 5 | 100% | 36.5 years |
| Native, born in the United States: | 0 | 0% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0% |
| Foreign born, naturalized U.S. citizen: | 0 | 0% |
| Foreign born, not a U.S. citizen: | 0 | 0% |
| Total Population: | 0 | 100% |
| Total Native Population: | 0 | 0% |
| Total Foreign-born Population: | 0 | 0% |
In 2024, the Median household income is $0, which is well under the national median ($80,734), is down $72,917 (100.0%) since 2011 and below its 2019 pre-pandemic level by $162,019. Family households earn a median of $0 versus $0 for nonfamily households (a difference of $0). By gender, male median income is $0 and female is $0, which is considerably lower than the national female median ($55,274), with a current gap of $0 that has narrowed from 2011 to 2024.
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $72,917 | $102,778 | $71,250 | $64,938 | $63,973 | $95,882 | $74,250 | $127,125 | $162,019 | $152,250 | $0 | $0 | $0 | $0 |
| Median Family Income | $73,083 | $95,208 | $88,750 | $76,176 | $64,821 | $115,735 | $136,250 | $147,167 | $184,435 | $162,750 | $0 | $0 | $0 | $0 |
| Median NonFamily Income | $52,333 | $103,796 | $59,099 | $59,125 | $59,543 | $61,875 | $60,163 | $0 | $41,798 | $44,365 | $0 | $0 | $0 | $0 |
| Median Male Income | $75,156 | $76,202 | $75,925 | $49,750 | $0 | $84,318 | $93,667 | $91,957 | $77,153 | $81,607 | $0 | $0 | $0 | $0 |
| Median Female Income | $21,350 | $21,891 | $41,105 | $42,425 | $0 | $42,448 | $47,800 | $48,417 | $51,923 | $51,914 | $0 | $0 | $0 | $0 |
| Employed: | 0 | 0% |
| Unemployed: | 0 | 0% |
| Not In Labor Force: | 0 | 0% |
| Total: | 0 | 100% |
| Management, business, science, and arts: | 0 | 0% |
| Service: | 0 | 0% |
| Sales and Office: | 0 | 0% |
| Natural resources, construction, and maintenance: | 0 | 0% |
| Production, transportation, and material moving: | 0 | 0% |
| Total Civilian Employed Population: | 0 | 100% |
In 2024, the median home value is $0, which is much lower than the national median ($332,700), is down $232,500 (100.00%) since 2011 and below its 2019 pre-pandemic level by $177,500. The median gross rent is $0, which is well under the national median ($1,413), and above its 2019 pre-pandemic level by $0. Insufficient data for owner/renter mix. Insufficient data for vacancy rate.
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $232,500 | $215,800 | $207,200 | $193,700 | $202,300 | $195,100 | $199,600 | $203,700 | $177,500 | $208,700 | $0 | $0 | $0 | $0 |
| Less than $500: | 0 | 0% |
| $500 to $999: | 0 | 0% |
| $1,000 to $1,499: | 0 | 0% |
| $1,500 to $1,999: | 0 | 0% |
| $2,000 to $2,499: | 0 | 0% |
| $2,500 to $2,999: | 0 | 0% |
| $3,000 or more: | 0 | 0% |
| No Rent: | 0 | 0% |
| Total: | 0 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $0 | $0 | $0 | $0 | $0 | $0 | $1,320 | $1,125 | $0 | $0 | $0 | $0 | $0 | $0 |
| Owner Occupied (with mortgage): | 0 | 0% |
| Owner Occupied (free and clear, no mortgage): | 0 | 0% |
| Renter Occupied: | 0 | 0% |
| Total Occupied Housing Units: | 0 | 100% |
| Occupied Housing Units: | 0 | 0% |
| Vacant Housing Units (not graphed): | 0 | 0% |
| Total Housing Units: | 0 | 100% |
| Single-Family Units: | 0 | 0% |
| Multi-Family Units: | 0 | 0% |
| Other Units: | 0 | 0% |
| Total Housing Units: | 0 | 100% |
ZIP Code 27709 supports both business and residential activity. According to the Business Census (2024), there are 324 business establishments, employing about 35,641 people with an annual payroll of $5,807,531,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,006Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 324Source: CBP |
| 1st Quarter Payroll: | $1,480,525,000Source: CBP |
| Annual Payroll: | $5,807,531,000Source: CBP |
| # of Employees: | 35,641Source: CBP |
ZIP Code 27709 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 504,357 people, about 0.00% of whom live in ZIP Code 27709. It covers 5.732 sq mi of land and a water area of 0.012 sq mi.
| CBSA Name: | Durham-Chapel Hill, NCSource: Census |
| CBSA Number: | 20500Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 504,357Source: Census |
| MSA: | Raleigh-Durham-Chapel Hill, NC MSASource: Census |
| Land Area: | 5.732 sq miSource: Census |
| Water Area: | 0.012 sq miSource: 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 27709 belongs to, but we will update this once new district data is released. There are 1 public school(s) in this ZIP Code, and we have located 3 private school(s). 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.