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/HARDIN

Hardin County, IA ZIP codes

There are 12 ZIP codes in Hardin County, IA, in 12 towns, from 50006 to 50672. The largest are 50126 (Iowa Falls), 50627 (Eldora) and 50006 (Alden). 1 more crosses into it from a neighbouring county: 50601.

The county seat is Eldora.

ZIP codes
12
Partly in it
1 more
Towns
12
County seat
Eldora
County FIPS
19083
State
Iowa
Population
16,639
Median household income
$65,069
Land area
569 sq mi

Hardin County ZIP codes by town

Eldora (county seat)
50627

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 Hardin County

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

Map of Hardin County ZIP codes

500065004350102501225012650206502305025850259502695062750672

The ZIP codes of Hardin 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.

Hardin County in numbers

About 16,639 people live in Hardin County, in 7,038 households, the 44th most populous of Iowa's 99 counties. The median household income is $65,069 a year, 13% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $122,500 (41% below the Iowa median), and median gross rent is $795 a month. The median age is 45.4; 21.9% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 22 minutes.

Population16,639Hardin16,639
Households7,038Hardin7,038
Median age45.4Hardin45.4Iowa38.6US 38.9
Median household income$65,069Hardin$65,069Iowa$75,059US $80,734
Median home value$122,500Hardin$122,500Iowa$208,000US $332,700
Median gross rent$795Hardin$795Iowa$972US $1,413
Bachelor's degree or higher21.9%Hardin21.9%Iowa31.4%US 35.7%
Mean commute21.6 minHardin21.6 minIowa19.8 minUS 26.4 min
Population density29 / sq miHardin29 / 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 Hardin County

Largest towns in Hardin County
TownZIP codesPopulation
Iowa Falls 1 5,038
Eldora 1 2,617
Alden 1 833
Hubbard 1 773
Radcliffe 1 657
Union 1 378
Steamboat Rock 1 312
New Providence 1 173
Whitten 1 164
Buckeye 1 75
Garden City 1 36

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 Hardin County.

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

Every ZIP code in Hardin County, with figures

ZIP codes in Hardin County
ZIP City Type Population Median income Median home
50006 Alden , IA Standard 1,437 $69,783 $121,200
50043 Buckeye , IA No street area — — —
50102 Garden City , IA Standard 36 — $110,200
50122 Hubbard , IA Standard 1,297 $81,739 $115,500
50126 Iowa Falls , IA Standard 6,368 $55,185 $133,300
50206 New Providence , IA Standard 349 $79,306 $112,500
50230 Radcliffe , IA Standard 1,145 $87,778 $165,300
50258 Union , IA Standard 958 $83,988 $109,800
50259 Gifford , IA No street area — — —
50269 Whitten , IA Standard 164 $92,813 $90,000
50627 Eldora , IA Standard 3,276 $74,536 $131,600
50672 Steamboat Rock , IA Standard 611 $73,333 $158,500

Cite this page

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

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