ZIP code 45040: Mason, OH
45040 is a ZIP code in Mason, Ohio, mainly in Warren County, part of the Cincinnati, OH-KY-IN metro area. About 59,518 people live here.
- Population
- 59,518
- Median household income
- $133,240
- Typical home value
- $497,700+1.3% in 12 months
- Median rent
- $1,811gross, per month
- Median age
- 41.5
- Homeowners
- 77.7%of occupied homes
Shaded: ZIP code 45040's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 45040 details
| City | Mason |
|---|---|
| State | Ohio |
| County | Warren County |
| Metro area | Cincinnati, OH-KY-IN |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 28.5 sq mi, plus 0.1 sq mi of water |
| Population density | 2,092 people per sq mi |
| Bachelor's degree or higher | 63% of adults 25+ |
| Average commute | 23.6 minutes |
| Center coordinates | 39.35078, -84.31320 |
Median rent in 45040 by bedrooms
| Size | Median gross rent |
|---|---|
| Studio | $1,476/mo |
| 1 bedroom | $1,408/mo |
| 2 bedrooms | $1,812/mo |
| 3 bedrooms | $2,014/mo |
| 4 bedrooms | $2,685/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 45040
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 45034 | Kings Mills, OH | 3.6 mi | 968 |
| 45039 | Maineville, OH | 4.4 mi | 28,335 |
| 45071 | West Chester, OH | 5.2 mi | — |
| 45249 | Cincinnati, OH | 5.3 mi | 14,490 |
| 45069 | West Chester, OH | 5.3 mi | 56,037 |
| 45065 | South Lebanon, OH | 5.5 mi | 7,053 |
| 45241 | Cincinnati, OH | 6.9 mi | 23,955 |
| 45050 | Monroe, OH | 7.1 mi | 12,248 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 45040?
A typical home in ZIP code 45040 is worth about $497,700 (Zillow Home Value Index). The median household here earns $133,240 a year. See what buying here would cost per month, with Ohio average taxes and insurance filled in.
Monthly payment for a $497,700 homeWhat can a $133,240 income afford?Rental property numbers
About ZIP code 45040
What city is ZIP code 45040?
ZIP code 45040 is in Mason, OH, in Warren County.
What county is ZIP code 45040 in?
45040 is mainly in Warren County, Ohio.
What is the population of ZIP code 45040?
About 59,518 people live in ZIP code 45040, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 45040 in?
45040 is in Eastern Time (UTC−5). It observes daylight saving time.