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zipcodes.pro — STATE/IA/COUNTY/BUTLER

Butler County, IA ZIP codes

There are 11 ZIP codes in Butler County, IA, in 11 towns, from 50602 to 50670. The largest are 50665 (Parkersburg), 50619 (Clarksville) and 50670 (Shell Rock).

The county seat is Allison.

ZIP codes
11
Towns
11
County seat
Allison
County FIPS
19023
State
Iowa
Population
14,268
Median household income
$73,715
Land area
580 sq mi

Butler County ZIP codes by town

Allison (county seat)
50602

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.

Map of Butler County ZIP codes

5060250604506085061150619506255063650649506605066550670

The ZIP codes of Butler 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.

Butler County in numbers

About 14,268 people live in Butler County, in 5,863 households, the 55th most populous of Iowa's 99 counties. The median household income is $73,715 a year, about the same as the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $165,400 (20% below the Iowa median), and median gross rent is $812 a month. The median age is 43.7; 21.4% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 25 minutes.

Population14,268Butler14,268
Households5,863Butler5,863
Median age43.7Butler43.7Iowa38.6US 38.9
Median household income$73,715Butler$73,715Iowa$75,059US $80,734
Median home value$165,400Butler$165,400Iowa$208,000US $332,700
Median gross rent$812Butler$812Iowa$972US $1,413
Bachelor's degree or higher21.4%Butler21.4%Iowa31.4%US 35.7%
Mean commute24.7 minButler24.7 minIowa19.8 minUS 26.4 min
Population density25 / sq miButler25 / 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 Butler County

Largest towns in Butler County
TownZIP codesPopulation
Parkersburg 1 1,766
Shell Rock 1 1,625
Greene 1 1,339
Clarksville 1 1,237
Aplington 1 1,111
Allison 1 929
Dumont 1 783
New Hartford 1 675
Bristow 1 197
Austinville 1 24
Kesley 1 12

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 Butler County.

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

Every ZIP code in Butler County, with figures

ZIP codes in Butler County
ZIP City Type Population Median income Median home
50602 Allison , IA Standard 1,254 $67,188 $118,100
50604 Aplington , IA Standard 1,590 $66,776 $168,200
50608 Austinville , IA Standard 24 — —
50611 Bristow , IA Standard 364 $84,250 $93,300
50619 Clarksville , IA Standard 2,150 $84,076 $163,200
50625 Dumont , IA Standard 930 $64,250 $86,600
50636 Greene , IA Standard 2,186 $70,066 $154,700
50649 Kesley , IA Standard 12 — —
50660 New Hartford , IA Standard 1,143 $95,969 $190,900
50665 Parkersburg , IA Standard 2,693 $75,521 $217,700
50670 Shell Rock , IA Standard 2,270 $84,679 $171,500

Cite this page

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

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