Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/PA/SOUTH-NEW-CASTLE

South New Castle ZIP codes, Pennsylvania

No ZIP code is named for South New Castle, PA; addresses there use a neighbouring town's name. The ZIP code covering it is 16102. Its area codes are 724 and 878.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
712
Area codes
724, 878

NANPA lists no telephone rate centre for South New Castle itself, so these are the area codes of the nearest one, New Castle (0.0 miles). A town on an area-code boundary can differ from its neighbour.

South New Castle in numbers

About 712 people live in South New Castle, in 283 households. The median household income is $69,375 a year, 11% below the Pennsylvania median of $77,971 (US: $80,734). The median owner-occupied home is valued at $104,100 (59% below the Pennsylvania median), and median gross rent is $933 a month. The median age is 42.3; 22.0% of adults 25 and over hold a bachelor's degree or higher (35.2% across Pennsylvania); the average commute takes 22 minutes.

Population712South New Castle712
Households283South New Castle283
Median age42.3South New Castle42.3Pennsylvania40.9US 38.9
Median household income$69,375South New Castle$69,375Pennsylvania$77,971US $80,734
Median home value$104,100South New Castle$104,100Pennsylvania$254,500US $332,700
Median gross rent$933South New Castle$933Pennsylvania$1,209US $1,413
Bachelor's degree or higher22.0%South New Castle22.0%Pennsylvania35.2%US 35.7%
Mean commute21.5 minSouth New Castle21.5 minPennsylvania26.3 minUS 26.4 min
Population density2,198 / sq miSouth New Castle2,198 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place South New Castle borough. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes covering South New Castle

These ZIP codes cover part of South New Castle but are addressed as somewhere else.

ZIP codes overlapping South New Castle
ZIP City Type Population Median income Median home
16102 New Castle , PA Standard 4,929 $56,053 $104,900

Map of South New Castle ZIP codes

16102

The ZIP codes of South New Castle, PA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near South New Castle

The nearest larger towns are New Castle (21,579 people, 1.4 mi), Oakland (1,330 people, 1.8 mi) and Oakwood (2,253 people, 3.1 mi).

Towns near South New Castle
TownPopulationDistance
New Castle 21,579 1.4 mi
Ellwood City 7,532 8.5 mi
Struthers, OH 9,923 13.9 mi
East Palestine, OH 4,696 14.1 mi
Campbell, OH 7,784 14.6 mi
Beaver Falls 8,850 14.9 mi
Slippery Rock 3,495 16.4 mi
New Brighton 5,567 16.6 mi
Zelienople 3,827 17.0 mi
Slippery Rock University 2,853 17.0 mi
Hubbard, OH 7,598 17.0 mi
Youngstown, OH 59,331 17.9 mi
Columbiana, OH 6,903 17.9 mi
Farrell 4,199 18.1 mi

More nearby: every ZIP code in Lawrence County · Pennsylvania ZIP codes

Cite this page

zipcodes.pro. “South New Castle, PA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/pa/south-new-castle

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