Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/OH/NORTHBROOK

Northbrook ZIP codes, Ohio

No ZIP code is named for Northbrook, OH; addresses there use a neighbouring town's name. 2 ZIP codes cover it: 45231 and 45251.

USPS city name
0 ZIP codes
Overlapping the city
2 more
Population
10,742
State
Ohio

Northbrook in numbers

About 10,742 people live in Northbrook, in 4,061 households. The median household income is $67,426 a year, 6% below the Ohio median of $71,389 (US: $80,734). The median owner-occupied home is valued at $157,400 (27% below the Ohio median), and median gross rent is $1,555 a month. The median age is 36.3; 21.1% of adults 25 and over hold a bachelor's degree or higher (31.5% across Ohio); the average commute takes 23 minutes.

Population10,742Northbrook10,742
Households4,061Northbrook4,061
Median age36.3Northbrook36.3Ohio39.7US 38.9
Median household income$67,426Northbrook$67,426Ohio$71,389US $80,734
Median home value$157,400Northbrook$157,400Ohio$214,800US $332,700
Median gross rent$1,555Northbrook$1,555Ohio$1,034US $1,413
Bachelor's degree or higher21.1%Northbrook21.1%Ohio31.5%US 35.7%
Mean commute23.2 minNorthbrook23.2 minOhio23.4 minUS 26.4 min
Population density5,563 / sq miNorthbrook5,563 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Northbrook CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes covering Northbrook

These ZIP codes cover part of Northbrook but are addressed as somewhere else.

ZIP codes overlapping Northbrook
ZIP City Type Population Median income Median home
45231 Cincinnati , OH Standard 40,463 $71,353 $176,000
45251 Cincinnati , OH Standard 20,254 $74,614 $185,300

Map of Northbrook ZIP codes

4523145251

The ZIP codes of Northbrook, OH, 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.

Towns near Northbrook

The nearest larger towns are White Oak (19,216 people, 2.9 mi), Forest Park (20,025 people, 4.0 mi) and Finneytown (12,506 people, 4.1 mi).

Towns near Northbrook
TownPopulationDistance
Northgate 6,723 0.8 mi
Groesbeck 7,824 1.5 mi
Mount Healthy Heights 3,263 1.8 mi
New Burlington 5,426 1.9 mi
Mount Healthy 6,919 2.0 mi
North College Hill 9,555 2.5 mi
White Oak 19,216 2.9 mi
Pleasant Run 5,629 3.2 mi
Dry Ridge 2,554 3.4 mi
Greenhills 3,702 3.5 mi
Forest Park 20,025 4.0 mi
Finneytown 12,506 4.1 mi
Pleasant Run Farm 4,524 4.1 mi
Monfort Heights 12,441 4.7 mi

More nearby: every ZIP code in Hamilton County · Ohio ZIP codes

Cite this page

zipcodes.pro. “Northbrook, OH ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/oh/northbrook

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