| City: | Duncan, Oklahoma |
| County: | Stephens County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 9:19:38 AM |
| Population: | No Population Data |
| Area Code: | 580 |
| Classification: | PO Box |
| Coordinates: | 34.5023, -97.9576 |
| Quick Link: |
ZIP code 73534 is Duncan, Oklahoma's downtown post office. It exists as a point location within ZIP 73533, which handles street delivery for the city. This arrangement is common in towns where the central post office building has its own ZIP for PO Box services while a sibling ZIP covers residential and business addresses.
The post office maintains 339 PO Boxes and serves 269 business delivery points. All 170 street-type ZIP+4 records point to a single address: W Willow Avenue with unit numbers. This pattern indicates PO Box Street Addressing (PBSA), where customers can receive mail using the post office's physical address instead of a traditional PO Box number. It's a convenience feature, not actual street delivery.
Duncan isn't a PO Box Only Zone. Residents have access to carrier delivery through ZIP 73533, making the 339 PO Boxes at this location a choice rather than a necessity. The city's businesses and residents can pick whichever mail arrangement works best for them.
With 22 business establishments and 154 employees counted in this ZIP's footprint, the downtown post office sits in Duncan's commercial core. Stephens County's seat has a working post office that handles both traditional PO Boxes and the newer street-style addressing option.
The only street listed is the post office's physical address used for PO Box Street Addressing.
ZIP Code 73534 supports both business and residential activity. According to the Business Census (2024), there are 23 business establishments, employing about 177 people with an annual payroll of $14,061,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,379Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 23Source: CBP |
| 1st Quarter Payroll: | $2,991,000Source: CBP |
| Annual Payroll: | $14,061,000Source: CBP |
| # of Employees: | 177Source: CBP |
ZIP Code 73534 is located in Stephens County, Oklahoma, within the Duncan, OK Metropolitan Statistical Area (CBSA 20340) and Oklahoma's 4th Congressional District. This Micro area has a population of 45,048 people, about 0.00% of whom live in ZIP Code 73534. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Duncan, OKSource: Census |
| CBSA Number: | 20340Source: Census |
| CBSA Type: | MicroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 45,048Source: Census |
| MSA: | Source: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 04Source: USPS |
| Congressional Land Area: | 9777.28 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 4021900Source: Census |
| Place Name: | Duncan city; OklahomaSource: Census |
We could not locate which school district 73534 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.