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/HIGHMORE

Highmore ZIP code, South Dakota

The ZIP code for Highmore, SD is 57345, and its area code is 605.

USPS city name
1 ZIP code
Population
596
Area code
605

Highmore in numbers

About 596 people live in Highmore, in 228 households. The median household income is $103,017 a year, 37% above the South Dakota median of $75,081 (US: $80,734). The median owner-occupied home is valued at $151,800 (41% below the South Dakota median), and median gross rent is $980 a month. The median age is 47.4; 19.5% of adults 25 and over hold a bachelor's degree or higher (31.9% across South Dakota); the average commute takes 10 minutes.

Population596Highmore596
Households228Highmore228
Median age47.4Highmore47.4South Dakota38.0US 38.9
Median household income$103,017Highmore$103,017South Dakota$75,081US $80,734
Median home value$151,800Highmore$151,800South Dakota$257,400US $332,700
Median gross rent$980Highmore$980South Dakota$946US $1,413
Bachelor's degree or higher19.5%Highmore19.5%South Dakota31.9%US 35.7%
Mean commute9.5 minHighmore9.5 minSouth Dakota17.8 minUS 26.4 min
Population density316 / sq miHighmore316 / sq mi

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

ZIP codes addressed as Highmore

ZIP codes with the USPS city name Highmore
ZIP City Type Population Median income Median home
57345 Highmore , SD Standard 941 $75,735 $171,900

Map of Highmore ZIP codes

57345

The ZIP codes of Highmore, 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 Highmore

The nearest larger towns are Miller (1,363 people, 22 mi), Lower Brule (743 people, 32 mi) and Fort Thompson (1,147 people, 32 mi).

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

Cite this page

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

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