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/SC/IRWIN

Irwin ZIP codes, South Carolina

No ZIP code is named for Irwin, SC; addresses there use a neighbouring town's name. The ZIP code covering it is 29720. Its area codes are 803 and 839.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
1,919
Area codes
803, 839

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

Irwin in numbers

About 1,919 people live in Irwin, in 653 households. The median household income is $55,885 a year, 19% below the South Carolina median of $69,324 (US: $80,734). The median owner-occupied home is valued at $176,900 (32% below the South Carolina median), and median gross rent is $818 a month. The median age is 32.0; 12.4% of adults 25 and over hold a bachelor's degree or higher (32.1% across South Carolina); the average commute takes 20 minutes.

Population1,919Irwin1,919
Households653Irwin653
Median age32.0Irwin32.0South Carolina40.2US 38.9
Median household income$55,885Irwin$55,885South Carolina$69,324US $80,734
Median home value$176,900Irwin$176,900South Carolina$259,000US $332,700
Median gross rent$818Irwin$818South Carolina$1,180US $1,413
Bachelor's degree or higher12.4%Irwin12.4%South Carolina32.1%US 35.7%
Mean commute20.2 minIrwin20.2 minSouth Carolina25.6 minUS 26.4 min
Population density643 / sq miIrwin643 / sq mi

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

ZIP codes covering Irwin

These ZIP codes cover part of Irwin but are addressed as somewhere else.

ZIP codes overlapping Irwin
ZIP City Type Population Median income Median home
29720 Lancaster , SC Standard 53,584 $62,969 $245,500

Map of Irwin ZIP codes

29720

The ZIP codes of Irwin, SC, 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 Irwin

The nearest larger towns are Springdale (2,198 people, 2.6 mi), Lancaster (8,921 people, 2.9 mi) and Elgin (2,360 people, 6.1 mi).

Towns near Irwin
TownPopulationDistance
Lancaster 8,921 2.9 mi
Lesslie 3,077 15.0 mi
Waxhaw, NC 22,275 17.5 mi
Mineral Springs, NC 3,314 18.9 mi
Rock Hill 75,259 20.2 mi
Marvin, NC 6,692 21.1 mi
Chester 5,218 22.2 mi
Fort Mill 30,775 22.6 mi
Wesley Chapel, NC 9,090 22.8 mi
Weddington, NC 13,805 23.2 mi
Baxter Village 4,542 24.7 mi
India Hook 3,960 25.0 mi
Newport 4,121 25.5 mi
Monroe, NC 36,759 25.9 mi

More nearby: every ZIP code in Lancaster County · South Carolina ZIP codes

Cite this page

zipcodes.pro. “Irwin, SC ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/sc/irwin

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