| City: | New Castle, Pennsylvania |
| County: | Lawrence County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 12:54:40 AM |
| Population: | No Population Data |
| Area Codes: | 724 / 878 |
| Classification: | PO Box |
| Coordinates: | 41.0030, -80.3467 |
| Quick Link: |
ZIP 16103 serves New Castle, Pennsylvania, exclusively through PO Box delivery. The 134 PO boxes handle mail for both residents and the 71 businesses that maintain addresses here. This ZIP doesn't include any street delivery routes.
Residents who need street delivery use the neighboring 16101 ZIP code, which covers most of New Castle's residential areas. The split between the two ZIP codes is typical for communities where the post office maintains a separate designation for its PO Box services. Lawrence County's postal system uses this arrangement to organize different delivery methods within the same city.
No street delivery routes exist in this ZIP code.
ZIP Code 16103 supports both business and residential activity. According to the Business Census (2024), there are 8 business establishments, employing about 100 people with an annual payroll of $3,983,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 199Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 8Source: CBP |
| 1st Quarter Payroll: | $1,220,000Source: CBP |
| Annual Payroll: | $3,983,000Source: CBP |
| # of Employees: | 100Source: CBP |
ZIP Code 16103 is located in Lawrence County, Pennsylvania, within the Pittsburgh, PA Metropolitan Statistical Area (CBSA 38300) and Pennsylvania's 16th Congressional District. This Metro area has a population of 2,443,921 people, about 0.00% of whom live in ZIP Code 16103. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Pittsburgh, PASource: Census |
| CBSA Number: | 38300Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 2,443,921Source: Census |
| MSA: | Source: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 16Source: USPS |
| Congressional Land Area: | 997.68 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 4253368Source: Census |
| Place Name: | New Castle city; PennsylvaniaSource: Census |
We could not locate which school district 16103 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.