Ontario is a city in Richland County, Ohio, home to about 6,667 people across 11 square miles. It has no ZIP code of its own: it’s part of 44903 and 44906.
Homes sold for a median of $154 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Mansfield; part is in Ontario
Mostly Mansfield; part is in Ontario
Each card is that ZIP code’s whole market, including any part outside Ontario. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Ontario’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | John Glenn Columbus International Airport (CMH)56 miles away |
|---|---|
| Nearest city of 250,000+ | Columbus, OH58 miles away |
| Nearest city of 1 million+ | Chicago, IL277 miles away |
Straight-line distances from the center of Ontario; 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.
Ontario had 6,656 residents in the 2020 census, up 26% since 2000.
It’s the 247th largest of 1,264 towns in Ohio by population.
Richland County grew from 44,289 residents in 1900 to 124,936 in 2020.
Richland County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 17°F. About 42.7 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Mansfield 5 W, OH weather station (4 miles away).
39,131 jobs at 2,616 businesses in Richland County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
935 doctors and other health care providers list an office in Ontario’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 74 |
|---|---|
| Specialist doctors | 184 |
| Dentists | 35 |
| Nurse practitioners and physician assistants | 222 |
| Mental health providers | 300 |
| Physical and occupational therapists | 90 |
| Optometrists | 15 |
| Chiropractors | 15 |
| Pharmacies | 15 |
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 (16 nearby)
Grocery stores (3 nearby)
Pharmacies (5 nearby)
Libraries (2 nearby)
Museums (2 nearby)
Theaters and performance venues (4 nearby)
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 1834.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Lexington Local, Mansfield City, Ontario Local and others. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Lexington Pre-SchoolOntario | Pre-K | 60 | Public | 0.3 mi |
| Sherman Elementary SchoolMansfield | Pre-K–2 | 613 | Public | 2.0 mi |
| Stingel Elementary SchoolOntario | Pre-K–5 | 922 | Public | 5.1 mi |
| Foundation AcademyMansfield | K–8 | 382 | Charter | 1.3 mi |
| GOAL Digital AcademyMansfield | K–12 | 855 | Charter | 0.3 mi |
| Legacy Academy of Excellence MansfieldMansfield | K–8 | 100 | Charter | 0.3 mi |
| Mifflin Elementary SchoolMansfield | K–4 | 256 | Public | 6.2 mi |
| Springmill STEM ElementaryMansfield | K–6 | 257 | Public | 2.1 mi |
| The Richland School of Academic ArtsMansfield | K–8 | 338 | Charter | 1.1 mi |
| Ontario Middle SchoolMansfield | 6–8 | 471 | Public | 5.2 mi |
| Mansfield Middle SchoolMansfield | 7–8 | 387 | Public | 0.2 mi |
| Mansfield Senior High SchoolMansfield | 8–12 | 816 | Public | 0.2 mi |
| Buckeye Community SchoolOntario | 9–12 | 566 | Charter | 1.0 mi |
| Cypress High SchoolMansfield | 9–12 | 231 | Charter | 0.6 mi |
| Ontario High SchoolMansfield | 9–12 | 540 | Public | 5.3 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Discovery SchoolMansfield | Pre-K–6 | 104 | Nonsectarian | 1.1 mi |
| Mansfield Sda SchoolMansfield | K–7 | 13 | Seventh-day Adventist | 2.4 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 Mansfield and Roseland.
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.