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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/ST-LAWRENCE

St. Lawrence ZIP code, South Dakota

The ZIP code for St. Lawrence, SD is 57373, and its area code is 605.

USPS city name
1 ZIP code
Population
172
Area code
605

Also written Saint Lawrence, the spelling the Postal Service uses.

NANPA lists no telephone rate centre for St. Lawrence itself, so these are the area codes of the nearest one, Miller (10.4 miles). A town on an area-code boundary can differ from its neighbour.

ZIP codes addressed as Saint Lawrence

ZIP codes with the USPS city name Saint Lawrence
ZIP City Type Population Median income Median home
57373 Saint Lawrence , SD Standard 339 $46,607 $176,100

Map of St. Lawrence ZIP codes

57373

The ZIP codes of St. Lawrence, 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 St. Lawrence

The nearest larger towns are Miller (1,363 people, 2.4 mi), Wessington (192 people, 13 mi) and Wolsey (692 people, 24 mi).

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

Cite this page

zipcodes.pro. “St. Lawrence, SD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/sd/st-lawrence

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