| City: | Brunswick, Georgia |
| County: | Glynn County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:23:21 PM |
| Population: | No Population Data |
| Area Code: | 912 |
| Classification: | PO Box |
| Coordinates: | 31.1497, -81.4917 |
| Quick Link: |
ZIP 31521 serves downtown Brunswick, Georgia's historic commercial district. This isn't a residential ZIP code. It's a PO Box ZIP that exists entirely within the larger 31520 territory. With 484 PO Boxes and 341 business delivery points, it handles mail for the city center.
Gloucester Street is the only street address in this ZIP, with 131 records using UNIT designations. This is downtown Brunswick's main commercial corridor, where businesses operate from multi-tenant buildings. The 18 business establishments employ 301 workers, a high employment density for a compact commercial area.
Brunswick sits on the Georgia coast, serving as the gateway to the Golden Isles including St. Simons Island and Jekyll Island. The downtown post office at this ZIP provides PO Box services to businesses and residents who prefer a downtown mailing address. Street delivery in the greater Brunswick area comes through ZIP 31520, which surrounds this point location.
Gloucester Street is the sole street in this ZIP, representing Brunswick's main downtown commercial corridor with multi-unit business addresses.
ZIP Code 31521 supports both business and residential activity. According to the Business Census (2024), there are 18 business establishments, employing about 299 people with an annual payroll of $13,909,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 2,948Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 18Source: CBP |
| 1st Quarter Payroll: | $3,083,000Source: CBP |
| Annual Payroll: | $13,909,000Source: CBP |
| # of Employees: | 299Source: CBP |
ZIP Code 31521 is located in Glynn County, Georgia, within the Brunswick-St. Simons, GA Metropolitan Statistical Area (CBSA 15260) and Georgia's 1st Congressional District. This Metro area has a population of 112,370 people, about 0.00% of whom live in ZIP Code 31521. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Brunswick-St. Simons, GASource: Census |
| CBSA Number: | 15260Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 112,370Source: Census |
| MSA: | Source: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 01Source: USPS |
| Congressional Land Area: | 7982.81 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1311560Source: Census |
| Place Name: | Brunswick city; GeorgiaSource: Census |
We could not locate which school district 31521 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.