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 — STATE/SC/COUNTY/WILLIAMSBURG

Williamsburg County, SC ZIP codes

There are 7 ZIP codes in Williamsburg County, SC, in 7 towns, from 29056 to 29590. The largest are 29556 (Kingstree), 29510 (Andrews) and 29056 (Greeleyville). 2 more cross into it from neighbouring counties: 29560 and 29554.

The county seat is Kingstree.

ZIP codes
7
Partly in it
2 more
Towns
7
County seat
Kingstree
County FIPS
45089
Population
30,282
Median household income
$46,213
Land area
934 sq mi

Williamsburg County ZIP codes by town

Kingstree (county seat)
29556

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Williamsburg County

These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Williamsburg County.

Map of Williamsburg County ZIP codes

The ZIP codes of Williamsburg County, 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.

Williamsburg County in numbers

About 30,282 people live in Williamsburg County, in 12,291 households, the 31st most populous of South Carolina's 46 counties. The median household income is $46,213 a year, 33% below the South Carolina median of $69,324 (US: $80,734). The median owner-occupied home is valued at $104,500 (60% below the South Carolina median), and median gross rent is $765 a month. The median age is 43.2; 17.4% of adults 25 and over hold a bachelor's degree or higher (32.1% across South Carolina); the average commute takes 31 minutes.

Population30,282Williamsburg30,282
Households12,291Williamsburg12,291
Median age43.2Williamsburg43.2South Carolina40.2US 38.9
Median household income$46,213Williamsburg$46,213South Carolina$69,324US $80,734
Median home value$104,500Williamsburg$104,500South Carolina$259,000US $332,700
Median gross rent$765Williamsburg$765South Carolina$1,180US $1,413
Bachelor's degree or higher17.4%Williamsburg17.4%South Carolina32.1%US 35.7%
Mean commute31.3 minWilliamsburg31.3 minSouth Carolina25.6 minUS 26.4 min
Population density32 / sq miWilliamsburg32 / sq mi

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

Largest towns in Williamsburg County

Largest towns in Williamsburg County
TownZIP codesPopulation
Andrews 1 3,485
Salters 1 3,480
Kingstree 1 3,132
Nesmith 1 1,322
Cades 1 1,121
Lane 1 564
Greeleyville 1 362

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Williamsburg County.

Not sure you are in Williamsburg County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Williamsburg County, with figures

ZIP codes in Williamsburg County
ZIP City Type Population Median income Median home
29056 Greeleyville , SC Standard 2,203 $47,031 $83,700
29510 Andrews , SC Standard 10,545 $55,058 $117,700
29518 Cades , SC Standard 1,121 $61,923 $212,200
29556 Kingstree , SC Standard 10,559 $42,365 $107,900
29564 Lane , SC Standard 1,262 $40,000 $78,000
29580 Nesmith , SC Standard 1,322 $50,156 $88,700
29590 Salters , SC Standard 3,480 $31,115 $74,400

Cite this page

zipcodes.pro. “Williamsburg County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/sc/county/williamsburg

Underlying data is public domain or openly licensed — sources, vintages and licences.