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/NEW-CASTLE

New Castle ZIP codes, Pennsylvania

New Castle, PA has 6 ZIP codes (16101, 16105, 16102, 16103, 16107 and 16108) and area codes 724 and 878. The largest is 16101.

USPS city name
6 ZIP codes
Population
21,579
Area codes
724, 878

New Castle in numbers

About 21,579 people live in New Castle, in 9,406 households, the 30th-largest of Pennsylvania's 1,944 census places. The median household income is $42,219 a year, 46% below the Pennsylvania median of $77,971 (US: $80,734). The median owner-occupied home is valued at $77,400 (70% below the Pennsylvania median), and median gross rent is $741 a month. The median age is 39.5; 16.3% of adults 25 and over hold a bachelor's degree or higher (35.2% across Pennsylvania); the average commute takes 22 minutes.

Population21,579New Castle21,579
Households9,406New Castle9,406
Median age39.5New Castle39.5Pennsylvania40.9US 38.9
Median household income$42,219New Castle$42,219Pennsylvania$77,971US $80,734
Median home value$77,400New Castle$77,400Pennsylvania$254,500US $332,700
Median gross rent$741New Castle$741Pennsylvania$1,209US $1,413
Bachelor's degree or higher16.3%New Castle16.3%Pennsylvania35.2%US 35.7%
Mean commute22.3 minNew Castle22.3 minPennsylvania26.3 minUS 26.4 min
Population density2,598 / sq miNew Castle2,598 / sq mi

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

ZIP codes addressed as New Castle

ZIP codes with the USPS city name New Castle
ZIP City Type Population Median income Median home
16101 New Castle , PA Standard 30,767 $51,128 $110,600
16105 New Castle , PA Standard 15,418 $65,855 $183,500
16102 New Castle , PA Standard 4,929 $56,053 $104,900
16103 New Castle , PA No street area — — —
16107 New Castle , PA No street area — — —
16108 New Castle , PA No street area — — —

Map of New Castle ZIP codes

161011610516102161031610716108

The ZIP codes of 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 New Castle

The nearest larger towns are Youngstown, OH (59,331 people, 17 mi), Austintown, OH (30,164 people, 22 mi) and Warren, OH (38,912 people, 30 mi).

Towns near New Castle
TownPopulationDistance
Ellwood City 7,532 9.8 mi
Struthers, OH 9,923 13.4 mi
Campbell, OH 7,784 13.9 mi
East Palestine, OH 4,696 15.1 mi
Slippery Rock 3,495 15.8 mi
Hubbard, OH 7,598 16.0 mi
Beaver Falls 8,850 16.4 mi
Slippery Rock University 2,853 16.5 mi
Farrell 4,199 16.8 mi
Hermitage 16,041 16.9 mi
Youngstown, OH 59,331 17.2 mi
Grove City 7,830 17.4 mi
New Brighton 5,567 18.1 mi
Zelienople 3,827 18.1 mi

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

Cite this page

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

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