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/SD/WEBSTER

Webster ZIP code, South Dakota

The ZIP code for Webster, SD is 57274, and its area code is 605.

USPS city name
1 ZIP code
Population
1,896
Area code
605

Webster in numbers

About 1,896 people live in Webster, in 891 households, the 45th-largest of South Dakota's 439 census places. The median household income is $55,179 a year, 27% below the South Dakota median of $75,081 (US: $80,734). The median owner-occupied home is valued at $154,100 (40% below the South Dakota median), and median gross rent is $653 a month. The median age is 40.5; 20.7% of adults 25 and over hold a bachelor's degree or higher (31.9% across South Dakota); the average commute takes 19 minutes.

Population1,896Webster1,896
Households891Webster891
Median age40.5Webster40.5South Dakota38.0US 38.9
Median household income$55,179Webster$55,179South Dakota$75,081US $80,734
Median home value$154,100Webster$154,100South Dakota$257,400US $332,700
Median gross rent$653Webster$653South Dakota$946US $1,413
Bachelor's degree or higher20.7%Webster20.7%South Dakota31.9%US 35.7%
Mean commute19.3 minWebster19.3 minSouth Dakota17.8 minUS 26.4 min
Population density1,169 / sq miWebster1,169 / sq mi

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

ZIP codes addressed as Webster

ZIP codes with the USPS city name Webster
ZIP City Type Population Median income Median home
57274 Webster , SD Standard 2,621 $68,083 $173,200

Map of Webster ZIP codes

The ZIP codes of Webster, SD, 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 Webster

The nearest larger towns are Sisseton (2,670 people, 32 mi), Watertown (23,044 people, 35 mi) and Milbank (3,525 people, 44 mi).

More nearby: every ZIP code in Day County · South Dakota ZIP codes

Cite this page

zipcodes.pro. “Webster, SD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/sd/webster

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