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/OH/COUNTY/MARION

Marion County, OH ZIP codes

There are 10 ZIP codes in Marion County, OH, in 9 towns, from 43301 to 43356. The largest are 43302 (Marion), 43342 (Prospect) and 43314 (Caledonia).

The county seat is Marion.

ZIP codes
10
Towns
9
County seat
Marion
County FIPS
39101
State
Ohio
Population
65,020
Median household income
$59,371
Land area
404 sq mi
Area codes
220, 740
Metro area
Marion

Marion County ZIP codes by town

Marion (county seat)
43301, 43302

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 Marion County ZIP codes

43301433024331443322433324333543337433414334243356

The ZIP codes of Marion 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.

Marion County in numbers

About 65,020 people live in Marion County, in 24,683 households, the 38th most populous of Ohio's 88 counties. The median household income is $59,371 a year, 17% below the Ohio median of $71,389 (US: $80,734). The median owner-occupied home is valued at $156,800 (27% below the Ohio median), and median gross rent is $864 a month. The median age is 40.1; 14.7% of adults 25 and over hold a bachelor's degree or higher (31.5% across Ohio); the average commute takes 25 minutes.

Population65,020Marion65,020
Households24,683Marion24,683
Median age40.1Marion40.1Ohio39.7US 38.9
Median household income$59,371Marion$59,371Ohio$71,389US $80,734
Median home value$156,800Marion$156,800Ohio$214,800US $332,700
Median gross rent$864Marion$864Ohio$1,034US $1,413
Bachelor's degree or higher14.7%Marion14.7%Ohio31.5%US 35.7%
Mean commute24.5 minMarion24.5 minOhio23.4 minUS 26.4 min
Population density161 / sq miMarion161 / 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 Marion County

Largest towns in Marion County
TownZIP codesPopulation
Marion 2 35,669
Prospect 1 1,157
La Rue 1 725
Green Camp 1 437
New Bloomington 1 430
Morral 1 423
Caledonia 1 421
Waldo 1 370

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 Marion County.

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

Every ZIP code in Marion County, with figures

ZIP codes in Marion County
ZIP City Type Population Median income Median home
43301 Marion , OH No street area — — —
43302 Marion , OH Standard 53,702 $55,057 $154,200
43314 Caledonia , OH Standard 2,438 $49,183 $147,700
43322 Green Camp , OH Standard 437 $56,250 $123,300
43332 La Rue , OH Standard 2,173 $81,382 $146,600
43335 Martel , OH No street area — — —
43337 Morral , OH Standard 625 $70,833 $141,300
43341 New Bloomington , OH Standard 953 $54,836 $152,600
43342 Prospect , OH Standard 3,836 $84,803 $176,100
43356 Waldo , OH Standard 1,120 $92,870 $250,500

Cite this page

zipcodes.pro. “Marion County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/oh/county/marion

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