| City: | Mainland, Pennsylvania |
| City Alias: | Harleysville |
| County: | Montgomery County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 9:46:29 PM |
| Population: | No Population Data |
| Area Codes: | 215 / 267 / 445 |
| Classification: | PO Box |
| Coordinates: | 40.2579, -75.3598 |
| Quick Link: |
Mail delivery here works through 2 city carrier routes covering Oak Drive and Main Street. Oak Drive includes units, suggesting at least one multi-unit property among the roughly 3 residential locations mapped in spatial data. The zone doesn't have traditional ZIP boundaries; it operates as a MultiPoint location entirely enclosed by Harleysville's service area. Mainland also functions as an accepted mailing name for Harleysville addresses since 2012, though Mainland itself predates that designation by several years.
The street network consists of just Oak Drive—which handles nearly all street delivery—and a single Main Street record. This minimal footprint reflects the ZIP's role as a small postal designation within Harleysville's broader service area.
ZIP Code 19451 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: | 3Source: 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 19451 is located in Montgomery County, Pennsylvania, within the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area (CBSA 37980) and Pennsylvania's 4th Congressional District. This Metro area has a population of 5,965,343 people, about 0.00% of whom live in ZIP Code 19451, and is subdivided into the Montgomery County-Bucks County-Chester County, PA division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Philadelphia-Camden-Wilmington, PA-NJ-DE-MDSource: Census |
| CBSA Number: | 37980Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Montgomery County-Bucks County-Chester County, PA (CBSA Div 33874)Source: Census |
| CBSA Population: | 5,965,343Source: Census |
| MSA: | Philadelphia-Wilmington-Atlantic City, PA-NJ-DE-MD CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 04Source: USPS |
| Congressional Land Area: | 1517.84 sq miSource: Census |
| PMSA: | Philadelphia, PA-NJ PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | --Source: Census |
| Place Name: | --Source: Census |
We could not locate which school district 19451 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 March 1, 2026.