Northbrook is a community in Hamilton County, Ohio, home to about 10,742 people across 1.9 square miles. Its ZIP code is 45251, and parts of 45231 are in Northbrook too.
Homes sold for a median of $159 per square foot in the three months ending August 2026, a seller’s market.
Mostly Northbrook; also Northgate and Groesbeck
Part is in Northbrook, part in Mount Healthy and Finneytown
Each card is that ZIP code’s whole market, including any part outside Northbrook. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Northbrook’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Northbrook well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Cincinnati Northern Kentucky International Airport (CVG)15 miles away |
|---|---|
| Nearest city of 250,000+ | Cincinnati, OH9 miles away |
| Nearest city of 1 million+ | Chicago, IL241 miles away |
Straight-line distances from the center of Northbrook; 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.
Northbrook had 10,912 residents in the 2020 census, down 1% since 2000.
It’s the 177th largest of 1,264 towns in Ohio by population.
Hamilton County grew from 409,479 residents in 1900 to 830,639 in 2020.
Hamilton County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 87°F in summer, and winter lows average 21°F. About 45.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Fairfield, OH weather station (6 miles away).
529,211 jobs at 21,087 businesses in Hamilton County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
88 doctors and other health care providers list an office in Northbrook.
Nearest hospitals
Providers with an office here
| Primary care doctors | 3 |
|---|---|
| Specialist doctors | 2 |
| Dentists | 9 |
| Nurse practitioners and physician assistants | 24 |
| Mental health providers | 19 |
| Physical and occupational therapists | 25 |
| Optometrists | 2 |
| Chiropractors | 4 |
| Pharmacies | 5 |
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 (1 nearby)
Grocery stores (1 nearby)
Pharmacies (2 nearby)
Libraries
Museums
Theaters and performance venues
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.
Public schools here are run by Northwest Local. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Houston Educational Service and Early Childhood CenterCincinnati | Pre-K | 227 | Public | 1.4 mi |
| Colerain Elementary SchoolCincinnati | K–5 | 645 | Public | 2.3 mi |
| Taylor Elementary SchoolCincinnati | K–5 | 797 | Public | 0.3 mi |
| Colerain Middle SchoolCincinnati | 6–8 | 528 | Public | 2.3 mi |
| Colerain High SchoolCincinnati | 9–12 | 1,591 | Public | 2.2 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Heaven's Treasures AcademyCincinnati | Pre-K–2 | 26 | Methodist | 0.5 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 Mount Healthy, Northgate, Finneytown, Groesbeck, New Burlington, Pleasant Run, North College Hill, Mount Healthy Heights, Pleasant Hills, Skyline Acres and Dunlap.
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.