| City: | Blaine, Washington |
| County: | Whatcom County |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 10:14:52 AM |
| Population: | No Population Data |
| Area Codes: | 360 / 564 |
| Classification: | PO Box |
| Coordinates: | 48.9936, -122.7455 |
| Quick Link: |
ZIP 98231 serves as a dedicated PO Box facility in Blaine, Washington, located just south of the Canadian border. This isn't where Blaine residents receive street delivery. That happens via the neighboring ZIP 98230. Instead, 98231 provides specialized PO Box services for businesses and individuals who need them.
The post office maintains 881 PO Boxes and serves 175 business delivery points. With Blaine sitting at the Peace Arch border crossing between Washington and British Columbia, this facility likely serves cross-border businesses, Canadian shoppers who maintain U.S. mailing addresses, and local companies that prefer centralized mail handling. The nearby Canadian neighborhoods of South Surrey and White Rock are less than a mile away.
Mail addressed to 98231 typically uses Harrison Ave, the post office's street address, combined with a PO Box number or unit designation. This is an example of PO Box Street Addressing (PBSA), where customers can use the post office's physical address instead of the traditional "PO Box" format. For standard street delivery in Blaine, mail uses ZIP 98230.
Harrison Ave is the post office's street address, used for PO Box Street Addressing format.
ZIP Code 98231 supports both business and residential activity. According to the Business Census (2024), there are 8 business establishments, employing about 55 people with an annual payroll of $2,512,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 4,382Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 8Source: CBP |
| 1st Quarter Payroll: | $591,000Source: CBP |
| Annual Payroll: | $2,512,000Source: CBP |
| # of Employees: | 55Source: CBP |
ZIP Code 98231 is located in Whatcom County, Washington, within the Bellingham, WA Metropolitan Statistical Area (CBSA 13380) and Washington's 2nd Congressional District. This Metro area has a population of 201,140 people, about 0.00% of whom live in ZIP Code 98231. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Bellingham, WASource: Census |
| CBSA Number: | 13380Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 201,140Source: Census |
| MSA: | Bellingham, WA MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 02Source: USPS |
| Congressional Land Area: | 1015.02 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 5306505Source: Census |
| Place Name: | Blaine city; WashingtonSource: Census |
We could not locate which school district 98231 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.