| City: | Pinto, Maryland |
| County: | Allegany County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 10:00:48 PM |
| Population: | No Population Data |
| Area Codes: | 227 / 240 / 301 |
| Classification: | PO Box |
| Coordinates: | 39.5699, -78.8396 |
| Quick Link: |
The ZIP code's infrastructure tells the story of a small postal hub. Seven ZIP+4 codes cover the area, with street delivery available along McMullen Highway while much of the population relies on rural routes. Twenty-one business addresses maintain PO Boxes here, suggesting the post office functions as a collection point for commercial mail in an area where street delivery isn't practical. The mix of one city route, one rural route, and four PO Box routes reflects how mail service adapts to low-density settlement patterns in western Maryland.
McMullen Highway serves as the sole named street for delivery, reflecting a community built along a transportation corridor rather than a traditional grid pattern.
ZIP Code 21556 is designated for PO Box delivery only; business establishment and employment data are not available.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 51Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 0Source: CBP |
| 1st Quarter Payroll: | $0Source: CBP |
| Annual Payroll: | $0Source: CBP |
| # of Employees: | 0Source: CBP |
ZIP Code 21556 is located in Allegany County, Maryland, within the Cumberland, MD-WV Metropolitan Statistical Area (CBSA 19060) and Maryland's 6th Congressional District. This Micro area has a population of 103,299 people, about 0.00% of whom live in ZIP Code 21556. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Cumberland, MD-WVSource: Census |
| CBSA Number: | 19060Source: Census |
| CBSA Type: | MicroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 103,299Source: Census |
| MSA: | Cumberland, MD-WV MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 06Source: USPS |
| Congressional Land Area: | 1950.26 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | --Source: Census |
| Place Name: | --Source: Census |
We could not locate which school district 21556 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.