Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/IA/COUNTY/WARREN

Warren County, IA ZIP codes

There are 12 ZIP codes in Warren County, IA, in 12 towns, from 50001 to 50241. The largest are 50125 (Indianola), 50211 (Norwalk) and 50047 (Carlisle). 1 more crosses into it from a neighbouring county: 50240.

The county seat is Indianola.

ZIP codes
12
Partly in it
1 more
Towns
12
County seat
Indianola
County FIPS
19181
State
Iowa
Population
54,409
Median household income
$94,588
Land area
570 sq mi
Area code
515

Warren County ZIP codes by town

Indianola (county seat)
50125

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 Warren County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Warren County.

Map of Warren County ZIP codes

500015004750118501255013950145501605016650210502115022950241

The ZIP codes of Warren 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.

Warren County in numbers

About 54,409 people live in Warren County, in 20,679 households, the 11th most populous of Iowa's 99 counties. The median household income is $94,588 a year, 26% above the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $269,600 (30% above the Iowa median), and median gross rent is $973 a month. The median age is 38.8; 33.3% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 24 minutes.

Population54,409Warren54,409
Households20,679Warren20,679
Median age38.8Warren38.8Iowa38.6US 38.9
Median household income$94,588Warren$94,588Iowa$75,059US $80,734
Median home value$269,600Warren$269,600Iowa$208,000US $332,700
Median gross rent$973Warren$973Iowa$972US $1,413
Bachelor's degree or higher33.3%Warren33.3%Iowa31.4%US 35.7%
Mean commute24.1 minWarren24.1 minIowa19.8 minUS 26.4 min
Population density96 / sq miWarren96 / 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 Warren County

Largest towns in Warren County
TownZIP codesPopulation
Indianola 1 16,044
Norwalk 1 14,183
Carlisle 1 4,255
Prole 1 1,585
Hartford 1 760
Milo 1 731
New Virginia 1 587
Martensdale 1 569
Lacona 1 354
Liberty Center 1 139
St. Marys 1 96
Ackworth 1 75

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 Warren County.

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

Every ZIP code in Warren County, with figures

ZIP codes in Warren County
ZIP City Type Population Median income Median home
50001 Ackworth , IA Standard 650 $131,875 $335,300
50047 Carlisle , IA Standard 6,690 $106,389 $250,100
50118 Hartford , IA Standard 920 $73,750 $179,800
50125 Indianola , IA Standard 20,121 $84,848 $258,900
50139 Lacona , IA Standard 1,025 $72,400 $151,600
50145 Liberty Center , IA Standard 139 $50,962 $232,100
50160 Martensdale , IA Standard 569 $57,500 $181,400
50166 Milo , IA Standard 2,023 $107,279 $252,900
50210 New Virginia , IA Standard 1,487 $87,813 $324,600
50211 Norwalk , IA Standard 16,835 $103,712 $316,100
50229 Prole , IA Standard 1,585 $123,164 $416,700
50241 Saint Marys , IA Standard 96 $77,500 $195,000

Cite this page

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

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