Defiance is a city in Defiance County, Ohio, home to about 17,276 people across 13 square miles. Its ZIP code is 43512.
Homes sold for a median of $137 per square foot in the three months ending August 2026, a seller’s market.
Mostly Defiance; also Brunersburg
Each card is that ZIP code’s whole market, including any part outside Defiance. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Defiance’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Detroit Metropolitan Wayne County Airport (DTW)83 miles away |
|---|---|
| Closer regional airport | Eugene F. Kranz Toledo Express Airport (TOL)36 miles away |
| Nearest city of 250,000+ | Fort Wayne, IN43 miles away |
| Nearest city of 1 million+ | Chicago, IL176 miles away |
Straight-line distances from the center of Defiance; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Defiance had 17,066 residents in the 2020 census, up 4% since 2000.
It’s the 112th largest of 1,264 towns in Ohio by population.
Defiance County grew from 26,387 residents in 1900 to 38,286 in 2020.
Defiance County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 85°F in summer, and winter lows average 18°F. About 38 inches of rain and melted snow fall in a typical year, with about 24 inches of snow.
Source: NOAA 1991–2020 climate normals, Defiance, OH weather station (about a mile away).
13,708 jobs at 813 businesses in Defiance County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
260 doctors and other health care providers list an office in Defiance.
Nearest hospitals
Providers with an office here
| Primary care doctors | 26 |
|---|---|
| Specialist doctors | 22 |
| Dentists | 16 |
| Nurse practitioners and physician assistants | 48 |
| Mental health providers | 93 |
| Physical and occupational therapists | 30 |
| Optometrists | 12 |
| Chiropractors | 13 |
| Pharmacies | 11 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (13 nearby)
Grocery stores (6 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Museums
Counts are within about 2.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1822.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Ayersville Local, Defiance City, Northeastern Local. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Ayersville Elementary SchoolDefiance | K–6 | 322 | Public | 5.1 mi |
| Defiance Elementary SchoolDefiance | K–5 | 1,075 | Public | 1.5 mi |
| Tinora Elementary SchoolDefiance | K–4 | 355 | Public | 5.8 mi |
| Tinora Middle SchoolDefiance | 5–8 | 313 | Public | 5.7 mi |
| Defiance Middle SchoolDefiance | 6–8 | 572 | Public | 1.2 mi |
| Ayersville High SchoolDefiance | 7–12 | 326 | Public | 5.1 mi |
| Defiance High SchoolDefiance | 9–12 | 697 | Public | 1.2 mi |
| Tinora High SchoolDefiance | 9–12 | 272 | Public | 5.7 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Holy Cross Catholic SchoolDefiance | Pre-K–5 | 84 | Roman Catholic | 2.0 mi |
| St John Lutheran SchoolDefiance | Pre-K–8 | 79 | Lutheran Church–Missouri Synod | 0.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Brunersburg.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.