ZIP Codes of Clarke County, IA

Population & People
Population & People
Total Population
9,254
Household Income
Household Income
Median Income
$70,836
Housing
Housing
Total Housing Units
4,322
Business & Economy
Business & Economy
Total Businesses
180
Employment
Employment
Employment Rate
62.45%
Education
Education
Bachelor's Degree+
15.83%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 3 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:3 ZIP Codes (3 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:641
Timezone:Central (GMT -06:00)
Local Time:2:11:51 PM
Population:9,254 [See All]
FIPS:19039
Land Area:370 sq mi
Water Area:1 sq mi
Coordinates:41.0371, -93.7835
Quick Link:
https://www.zip-codes.com/county/ia-clarke.asp
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Iowa's #80 most populous county
9,254 residents across 3 ZIPs — #80 of 99 Iowa counties.

Standout ZIPs in this County


Most Populous
Osceola · 7,489 people
80.9% of county total
Highest Income
Osceola · $73,026 median
1.0× county average
Largest Land Area
Osceola · 202.5 sq mi
Spans the most ground
Fastest Growth
Osceola · 8.7% (10-yr)
6,892 → 7,489 residents
Most Educated
Osceola · 15.6% bachelor's+
774 of 4,970 adults 25+

Things worth knowing about Clarke County


9,254 residents live across 3 ZIPs covering 370 sq mi, served by 3 distinct USPS-recognized cities.

Population moved from 8,791 to 9,254 from 2014 to 2024 — a +5.3% change. 2 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 50213 (Osceola, $73,026 median) and poorest ZIP 50174 (Murray, $67,250) are 10.3 miles apart — a 1.1× income gap across local geography.

Median home values vary 1.4× across this county — from $122,400 in 50275 (Woodburn) to $165,500 in 50213 (Osceola).

Density varies across the county — from 9 people/sq mi in 50275 (Woodburn) to 37 in 50213 (Osceola).

Educational attainment ranges from 15.6% bachelor's+ in 50213 (Osceola) to 19.5% in 50275 (Woodburn) — the breadth of educational profiles across the area.

Within Iowa, this is the #80 most populous of 99 counties and ranks #63 for median household income with the #10 fastest decade growth .

Weighted by population, the typical household earns about $72,197 across the county — reflecting what a typical resident sees, not a simple ZIP average.

15.8% of adults age 25+ hold a bachelor's degree or higher (949 of 5,994 reporting).

3 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Clarke County


Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Osceola

All ZIP Codes in Clarke County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
50213OsceolaStandard7,489$73,026202.58.7%
50174MurrayStandard1,259$67,250108.51.1%
50275WoodburnStandard506$72,23258.6-22.6%

Adjacent & Nearby Counties