Greenfield is a village in Highland County, Ohio, home to about 3,966 people across 2.1 square miles. Its ZIP code is 45123.
Homes sold for a median of $106 per square foot in the three months ending August 2026, a balanced market.
Mostly Greenfield; also Good Hope
Each card is that ZIP code’s whole market, including any part outside Greenfield. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Greenfield’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)52 miles away |
|---|---|
| Closer regional airport | Rickenbacker International Airport (LCK)40 miles away |
| Nearest city of 250,000+ | Columbus, OH49 miles away |
| Nearest city of 1 million+ | Chicago, IL283 miles away |
Straight-line distances from the center of Greenfield; 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.
Greenfield had 4,339 residents in the 2020 census, down 12% since 2000.
It’s the 333rd largest of 1,264 towns in Ohio by population.
Highland County grew from 30,982 residents in 1900 to 43,317 in 2020.
Highland County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 20°F. About 41 inches of rain and melted snow fall in a typical year, with about 18 inches of snow.
Source: NOAA 1991–2020 climate normals, Washington Court House, OH weather station (13 miles away).
9,284 jobs at 733 businesses in Highland County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
104 doctors and other health care providers list an office in Greenfield.
Nearest hospitals
Providers with an office here
| Primary care doctors | 11 |
|---|---|
| Specialist doctors | 2 |
| Dentists | 2 |
| Nurse practitioners and physician assistants | 10 |
| Mental health providers | 71 |
| Physical and occupational therapists | 4 |
| Chiropractors | 4 |
| Pharmacies | 4 |
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 (3 nearby)
Grocery stores (2 nearby)
Pharmacies (2 nearby)
Libraries (1 nearby)
Counts are within about 1 mile 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.
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 Greenfield Exempted Village. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Greenfield Elementary SchoolGreenfield | Pre-K–5 | 562 | Public | 0.3 mi |
| Greenfield Middle SchoolGreenfield | 6–8 | 407 | Public | 0.3 mi |
| McClain High SchoolGreenfield | 9–12 | 496 | Public | 0.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Good Hope.
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.