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/IA/COUNTY/DECATUR

Decatur County, IA ZIP codes

There are 7 ZIP codes in Decatur County, IA, in 7 towns, from 50065 to 50262. The largest are 50144 (Leon), 50140 (Lamoni) and 50065 (Davis City). 2 more cross into it from neighbouring counties: 50264 and 50147.

The county seat is Leon.

ZIP codes
7
Partly in it
2 more
Towns
7
County seat
Leon
County FIPS
19053
State
Iowa
Population
7,759
Median household income
$59,044
Land area
532 sq mi

Decatur County ZIP codes by town

Leon (county seat)
50144

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 Decatur County

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

Map of Decatur County ZIP codes

50065500675010350108501405014450262

The ZIP codes of Decatur 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.

Decatur County in numbers

About 7,759 people live in Decatur County, in 3,055 households, the 86th most populous of Iowa's 99 counties. The median household income is $59,044 a year, 21% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $113,900 (45% below the Iowa median), and median gross rent is $611 a month. The median age is 36.1; 23.5% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 23 minutes.

Population7,759Decatur7,759
Households3,055Decatur3,055
Median age36.1Decatur36.1Iowa38.6US 38.9
Median household income$59,044Decatur$59,044Iowa$75,059US $80,734
Median home value$113,900Decatur$113,900Iowa$208,000US $332,700
Median gross rent$611Decatur$611Iowa$972US $1,413
Bachelor's degree or higher23.5%Decatur23.5%Iowa31.4%US 35.7%
Mean commute22.5 minDecatur22.5 minIowa19.8 minUS 26.4 min
Population density15 / sq miDecatur15 / 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 Decatur County

Largest towns in Decatur County
TownZIP codesPopulation
Lamoni 1 2,207
Leon 1 1,899
Decatur 1 190
Van Wert 1 188
Garden Grove 1 171
Grand River 1 166
Davis City 1 160

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 Decatur County.

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

Every ZIP code in Decatur County, with figures

ZIP codes in Decatur County
ZIP City Type Population Median income Median home
50065 Davis City , IA Standard 517 $49,423 $92,500
50067 Decatur , IA Standard 354 $43,750 $105,800
50103 Garden Grove , IA Standard 453 $64,063 $94,100
50108 Grand River , IA Standard 376 $38,125 $46,300
50140 Lamoni , IA Standard 2,842 $57,443 $121,900
50144 Leon , IA Standard 2,692 $63,333 $130,800
50262 Van Wert , IA Standard 263 $81,875 $83,800

Cite this page

zipcodes.pro. “Decatur County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ia/county/decatur

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