| City: | Saint Petersburg, Florida |
| City Alias: | St Petersburg |
| County: | Pinellas County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:34:21 PM |
| Population: | No Population Data |
| Area Code: | 727 |
| Classification: | PO Box |
| Coordinates: | 27.7709, -82.6795 |
| Quick Link: |
ZIP code 33731 is a PO Box ZIP serving downtown Saint Petersburg, Florida. It doesn't cover a geographic territory. Instead, it exists as a point location within ZIP 33701 in Pinellas County. The post office at this location maintains 423 PO Boxes and serves 337 business delivery points.
This ZIP functions primarily as a business mail hub. The ratio of business accounts (337) to PO Boxes (423) shows that commercial customers dominate. All 167 street-type records in the postal database reference a single address on 4th Street North, with unit designators indicating multiple tenants at one location. This pattern is consistent with a downtown post office or commercial mail facility.
Downtown St. Petersburg and the University Park-South Downtown area surround this postal location. Street delivery isn't available through this ZIP, but residents and businesses have full access to carrier service through the enclosing 33701 ZIP code. The PO Box classification here is administrative, not a limitation on mail access.
Both "Saint Petersburg" and "St Petersburg" work as valid city names for mail addressed to this ZIP.
All records reference one address on 4th Street North, indicating a single-building postal facility.
ZIP Code 33731 supports both business and residential activity. According to the Business Census (2024), there are 10 business establishments, employing about 82 people with an annual payroll of $13,773,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 753Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 10Source: CBP |
| 1st Quarter Payroll: | $2,441,000Source: CBP |
| Annual Payroll: | $13,773,000Source: CBP |
| # of Employees: | 82Source: CBP |
ZIP Code 33731 is located in Pinellas County, Florida, within the Tampa-St. Petersburg-Clearwater, FL Metropolitan Statistical Area (CBSA 45300) and Florida's 14th Congressional District. This Metro area has a population of 3,240,469 people, about 0.00% of whom live in ZIP Code 33731, and is subdivided into the St. Petersburg-Clearwater-Largo, FL division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Tampa-St. Petersburg-Clearwater, FLSource: Census |
| CBSA Number: | 45300Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | St. Petersburg-Clearwater-Largo, FL (CBSA Div 41304)Source: Census |
| CBSA Population: | 3,240,469Source: Census |
| MSA: | Tampa-St. Petersburg-Clearwater, FL MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 14Source: USPS |
| Congressional Land Area: | 265.4 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1263000Source: Census |
| Place Name: | St. Petersburg city; FloridaSource: Census |
We could not locate which school district 33731 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.