New Castle, PA ZIP codes
New Castle, Pennsylvania has 6 ZIP codes, including 3 PO Box ZIPs. They are in Lawrence County.
- Population in these ZIPs
- 51,114
- Avg. median income
- $56,000population-weighted
- Typical home value
- $153,500population-weighted
- Metro area
- Pittsburgh, PA
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New Castle, PA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 16101 | Lawrence County | 30,767 | $51,128 | $125,800 |
| 16102 | Lawrence County | 4,929 | $56,053 | $125,500 |
| 16103 PO Box | Lawrence County | — | — | — |
| 16105 | Lawrence County | 15,418 | $65,855 | $217,800 |
| 16107 PO Box | Lawrence County | — | — | — |
| 16108 PO Box | Lawrence County | — | — | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near New Castle
- West Pittsburg 5 mi
- Edinburg 7 mi
- Wampum 7 mi
- New Galilee 9 mi
- Volant 9 mi
- New Wilmington 9 mi
- Hillsville 9 mi
- Bessemer 9 mi
- Ellwood City 9 mi
- Pulaski 10 mi
- Portersville 11 mi
- Villa Maria 11 mi
Frequently asked questions
What is the ZIP code for New Castle, PA?
New Castle, PA has 6 ZIP codes: 16101, 16102, 16103, 16105, 16107 and 16108.
What county is New Castle, Pennsylvania in?
New Castle ZIP codes are in Lawrence County.
Which New Castle ZIP codes are PO Boxes?
16103, 16107 and 16108 are PO Box or single-organization ZIP codes; they have no residential delivery area.