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/IA/ARNOLDS-PARK

Arnolds Park ZIP code, Iowa

The ZIP code for Arnolds Park, IA is 51331, and its area code is 712.

USPS city name
1 ZIP code
Overlapping the city
2 more
Population
922
Area code
712
State
Iowa

Mail addressed to Arnolds Park uses the ZIP code above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Arnolds Park in numbers

About 922 people live in Arnolds Park, in 522 households. The median household income is $86,833 a year, 16% above the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $438,900 (2.1 times the Iowa median), and median gross rent is $485 a month. The median age is 65.4; 39.1% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 17 minutes.

Population922Arnolds Park922
Households522Arnolds Park522
Median age65.4Arnolds Park65.4Iowa38.6US 38.9
Median household income$86,833Arnolds Park$86,833Iowa$75,059US $80,734
Median home value$438,900Arnolds Park$438,900Iowa$208,000US $332,700
Median gross rent$485Arnolds Park$485Iowa$972US $1,413
Bachelor's degree or higher39.1%Arnolds Park39.1%Iowa31.4%US 35.7%
Mean commute16.8 minArnolds Park16.8 minIowa19.8 minUS 26.4 min
Population density578 / sq miArnolds Park578 / sq mi

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

ZIP codes addressed as Arnolds Park

ZIP codes with the USPS city name Arnolds Park
ZIP City Type Population Median income Median home
51331 Arnolds Park , IA Standard 935 $89,167 $448,800

Other ZIP codes overlapping Arnolds Park

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

ZIP codes overlapping Arnolds Park
ZIP City Type Population Median income Median home
51351 Milford , IA Standard 4,988 $73,824 $273,100
51355 Okoboji , IA Standard 1,048 $72,262 $421,100

Map of Arnolds Park ZIP codes

51331

The ZIP codes of Arnolds Park, IA, 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 Arnolds Park

The nearest larger towns are Milford (3,311 people, 1.5 mi), Okoboji (969 people, 1.9 mi) and Spirit Lake (5,518 people, 4.0 mi).

Towns near Arnolds Park
TownPopulationDistance
Milford 3,311 1.5 mi
Spirit Lake 5,518 4.0 mi
Spencer 11,400 14.8 mi
Estherville 5,839 15.1 mi
Jackson, MN 3,287 19.6 mi
Emmetsburg 3,648 28.3 mi

More nearby: every ZIP code in Dickinson County · Iowa ZIP codes

Cite this page

zipcodes.pro. “Arnolds Park, IA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ia/arnolds-park

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