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/SENECA

Seneca County, OH ZIP codes

There are 15 ZIP codes in Seneca County, OH, in 15 towns, from 44802 to 44883. The largest are 44883 (Tiffin), 44830 (Fostoria) and 44836 (Green Springs). 1 more crosses into it from a neighbouring county: 44811.

The county seat is Tiffin.

ZIP codes
15
Partly in it
1 more
Towns
15
County seat
Tiffin
County FIPS
39147
State
Ohio
Population
54,770
Median household income
$66,025
Land area
551 sq mi
Area codes
419, 567
Metro area
Tiffin

Seneca County ZIP codes by town

Tiffin (county seat)
44883

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 Seneca County

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

Map of Seneca County ZIP codes

448024480744809448154481844828448304483644841448444484544853448614486744883

The ZIP codes of Seneca 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.

Seneca County in numbers

About 54,770 people live in Seneca County, in 22,279 households, the 47th most populous of Ohio's 88 counties. The median household income is $66,025 a year, 8% below the Ohio median of $71,389 (US: $80,734). The median owner-occupied home is valued at $154,700 (28% below the Ohio median), and median gross rent is $856 a month. The median age is 40.2; 20.6% of adults 25 and over hold a bachelor's degree or higher (31.5% across Ohio); the average commute takes 21 minutes.

Population54,770Seneca54,770
Households22,279Seneca22,279
Median age40.2Seneca40.2Ohio39.7US 38.9
Median household income$66,025Seneca$66,025Ohio$71,389US $80,734
Median home value$154,700Seneca$154,700Ohio$214,800US $332,700
Median gross rent$856Seneca$856Ohio$1,034US $1,413
Bachelor's degree or higher20.6%Seneca20.6%Ohio31.5%US 35.7%
Mean commute20.7 minSeneca20.7 minOhio23.4 minUS 26.4 min
Population density99 / sq miSeneca99 / 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 Seneca County

Largest towns in Seneca County
TownZIP codesPopulation
Tiffin 1 17,818
Fostoria 1 12,344
Green Springs 1 1,170
Attica 1 755
Alvada 1 746
Mc Cutchenville 1 744
Bloomville 1 721
Bettsville 1 562
Republic 1 456
Flat Rock 1 340
New Riegel 1 316
Bascom 1 298
Kansas 1 200
Melmore 1 112
Old Fort 1 81

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 Seneca County.

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

Every ZIP code in Seneca County, with figures

ZIP codes in Seneca County
ZIP City Type Population Median income Median home
44802 Alvada , OH Standard 746 $80,000 $197,100
44807 Attica , OH Standard 2,244 $87,356 $153,200
44809 Bascom , OH Standard 103 — $140,600
44815 Bettsville , OH Standard 710 $74,688 $112,800
44818 Bloomville , OH Standard 1,989 $63,922 $141,300
44828 Flat Rock , OH Standard 138 — —
44830 Fostoria , OH Standard 18,671 $62,990 $121,700
44836 Green Springs , OH Standard 2,496 $79,299 $139,500
44841 Kansas , OH Standard 498 $53,295 —
44844 Mc Cutchenville , OH Standard 744 $83,556 $160,100
44845 Melmore , OH No street area — — —
44853 New Riegel , OH Standard 1,391 $90,281 $156,100
44861 Old Fort , OH Standard 31 — —
44867 Republic , OH Standard 2,345 $72,716 $167,000
44883 Tiffin , OH Standard 28,102 $62,692 $163,600

Cite this page

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

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