Mason ZIP Codes — Warren County, OH

There is one unique ZIP code in Mason, Ohio and it is 45040. Area code: 513.

ZIP codes

28.45

sq mi land

0.05

sq mi water

513

area code

Mason, OH ZIP code map

About Mason, OH

Mason, Ohio, is a vibrant city located in Warren County that combines suburban charm with urban convenience. Known for its family-friendly community, Mason boasts a range of recreational activities and amenities that attract residents and visitors alike. As part of the greater Cincinnati metropolitan area, Mason offers a unique blend of small-town hospitality and access to big-city attractions.

Location & geography

Mason is situated in southwest Ohio, approximately 20 miles northeast of Cincinnati and 35 miles southwest of Dayton. The city covers a total land area of 28.45 square miles, with a minimal water area measuring 0.05 square miles. The terrain is typically flat, making it ideal for residential development and outdoor activities.

Community & economy

Mason is characterized by its tight-knit community, featuring numerous parks, schools, and family-oriented events that foster a strong sense of belonging. The local economy is diverse, with industries ranging from healthcare and education to retail and entertainment. Daily life in Mason is enhanced by a variety of shopping centers, dining options, and community events, making it a desirable place to live and work.

Transportation

Mason is easily accessible via major highways, including Interstate 71, which connects it to Cincinnati and beyond. The city is served by the 513 telephone area code, which covers a substantial region in southwestern Ohio. For air travel, the nearest major airport is Cincinnati/NKY International Airport, located approximately 25 miles to the southwest.

History

Founded in the early 1800s, Mason has grown from a small settlement into a thriving suburban city. The area experienced significant development during the late 20th century, driven by a booming population and the establishment of key industries. Notable events in Mason's history include the opening of Kings Island amusement park in 1972, which put the city on the map as a tourist destination.

Did you know?

One surprising fact about Mason is that it is home to the largest recreational facility in the region, Mason Community Center, which offers a wide array of amenities for residents. Additionally, the city boasts a rich history of hosting annual events, including the popular Mason Heritage Festival.

ZIP codes for Mason, OH (1)

ZIP code	City	County	Map
45040	Mason	Warren	View map

Demographics & statistics

57,214

Population

39.6

Median age

$128,034

Median household income

$59,290

Per capita income

$379,300

Median home value

$1,643

Median monthly rent

76.5%

Home ownership

4.1%

Poverty rate

2.2%

Unemployment

16,505

Housing units

65.5%

Bachelor's or higher

Age distribution

Male Female

1,376

Under 5

1,415

1,943

5–9

1,997

2,546

10–14

2,617

2,316

15–19

2,381

1,326

20–24

1,363

2,795

25–34

2,873

4,305

35–44

4,425

4,349

45–54

4,470

2,066

55–59

2,124

1,709

60–64

1,756

1,910

65–74

1,962

1,141

75–84

1,173

432

85+

444

← Male

Female →

Age summary

Group	Count	%
Under 18	15,093	26.4%
18 and over	42,121	73.6%
65 and over	7,062	12.3%
Median age	39.6 years

Race & ethnicity

White 68.1%

Asian 18.8%

Two or more races 4.6%

Black or African American 4.2%

Hispanic or Latino 3.5%

Other race 0.8%

American Indian / Alaska Native 0.1%

Group	Count	%
White	40,355	68.1%
Asian	11,122	18.8%
Two or more races	2,698	4.6%
Black or African American	2,511	4.2%
Hispanic or Latino	2,048	3.5%
Other race	493	0.8%
American Indian / Alaska Native	35	0.1%

Household income

Under $10k 1.3%

$10k–$15k 1.0%

$15k–$25k 4.5%

$25k–$35k 1.8%

$35k–$50k 5.9%

$50k–$75k 9.3%

$75k–$100k 13.4%

$100k–$150k 21.0%

$150k–$200k 12.5%

$200k+ 29.2%

Range	% of households
Under $10k	1.3%
$10k–$15k	1.0%
$15k–$25k	4.5%
$25k–$35k	1.8%
$35k–$50k	5.9%
$50k–$75k	9.3%
$75k–$100k	13.4%
$100k–$150k	21.0%
$150k–$200k	12.5%
$200k+	29.2%
Median income	$128,034

Housing

Home values

Under $50k 0.4%

$50k–$100k 1.8%

$100k–$150k 3.6%

$150k–$200k 8.0%

$200k–$300k 23.3%

$300k–$500k 34.4%

$500k–$1M 24.3%

$1M+ 4.2%

Housing overview

Metric	Value
Median home value	$379,300
Median rent / month	$1,643
Owner occupied	76.5%
Renter occupied	23.5%
Vacant	3.6%
Single-family detached	68.2%
Large apartment buildings	2.3%
Mobile homes	0.5%
Median rooms	7.2
Avg household size (owned)	2.87

Year built

Era	%
2020 or later	0.6%
2010–2019	14.8%
2000–2009	25.7%
1990–1999	30.3%
1980–1989	9.3%
1970–1979	11.1%
1960–1969	2.9%
1950–1959	2.4%
1940–1949	0.5%
1939 or earlier	2.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.7%
1 bedroom	3.8%
2 bedrooms	21.9%
3 bedrooms	28.7%
4 bedrooms	33.6%
5+ bedrooms	11.2%

Vehicles per household

Vehicles	% of households
No vehicle	1.5%
1 vehicle	25.0%
2 vehicles	45.6%
3 or more	28.0%

Heating fuel

Fuel type	%
Utility gas	57.5%
Electricity	39.5%
Propane / LP gas	1.2%
Fuel oil	0.5%
Wood	0.2%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	13,935	67.8%
Cohabiting couple	1,033	5.0%
Male householder, no spouse	1,811	8.8%
Female householder, no spouse	3,779	18.4%
Households with children under 18	8,572	41.7%
Households with seniors (65+)	4,763	23.2%
Average household size	2.76

Marital status

Status	Male	Female
Never married	25.0%	24.8%
Married	66.8%	58.7%
Separated	0.4%	0.7%
Widowed	1.8%	5.6%
Divorced	6.0%	10.2%

Education

Less than 9th grade 0.7%

Some HS, no diploma 1.5%

HS graduate 13.0%

Some college, no degree 11.9%

Associate's degree 7.3%

Bachelor's degree 37.2%

Graduate / professional 28.3%

Metric	%
HS diploma or higher	97.7%
Bachelor's or higher	65.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	982	5.8%
Kindergarten	741	4.4%
Elementary school	7,327	43.4%
High school	4,376	25.9%
College / grad school	3,468	20.5%

Employment

Industry of employment

Education & healthcare 25.0%

Professional & management 20.1%

Manufacturing 16.3%

Retail trade 9.7%

Finance & real estate 8.6%

Arts, food & hospitality 6.3%

Other services 3.2%

Transportation & utilities 2.9%

Public administration 2.9%

Wholesale trade 1.9%

Construction 1.8%

Information 1.2%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	65.1%
Service	8.8%
Sales & office	18.7%
Natural resources & construction	1.8%
Production & transportation	5.7%

Employment type

Type	%
Private sector	83.2%
Government	12.2%
Self-employed	4.5%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	74.5%
Carpool	4.6%
Public transit	0.4%
Walk	0.4%
Other means	1.0%
Avg commute (minutes)	25.0

Poverty

All people 4.1%

Under 18 years 4.9%

18 and over 3.7%

Married-couple families 3.3%

Female-led households 12.6%

Income support

Source	% of households
Social Security	23.2%
Retirement income	22.3%
Supplemental Security	1.8%
Cash public assistance	0.6%
Food stamps / SNAP	2.1%

Health indicators

Condition	%
High blood pressure	25.6%
High cholesterol	29.0%
Heart disease	4.4%
Stroke	1.9%
Asthma	8.8%
Arthritis	20.6%
Kidney disease	2.0%
Pulmonary disease	4.7%
Cancer	5.7%

Behavior / access	%
Binge drinking	17.0%
No physical activity	17.2%
Less than 7 hrs sleep	32.8%
Fair or poor health	8.7%
Poor mental health	13.3%
Poor physical health	6.8%
No health insurance	8.2%
Visited doctor (checkup)	76.2%
Visited dentist	74.6%
Cholesterol screening	91.4%
Teeth loss	8.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	2,382	5.7%

Disability	%
Any disability	7.8%
Under 18	2.7%
18–64 years	4.7%
65 and over	34.9%

Health insurance coverage

Type	%
Private insurance	89.7%
Public insurance	16.7%
Uninsured under 19	1.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	54,423	95.1%
Spanish	3,147	5.8%
Other Indo-European	156	0.3%
Asian & Pacific Islander	782	1.4%
Other languages	2,016	3.7%

Place of birth & citizenship

Origin	Count	%
Native born (US)	46,061	80.5%
Born in same state	45,094	78.8%
Born in different state	28,602	50.0%
Foreign born	967	1.7%
Naturalized citizen	11,153	19.5%
Not a US citizen	5,022	45.0%

Ancestry

Ancestry	Count	%
Italian	7,192	12.6%
French	6,298	11%
Arab	2,216	3.9%
Irish	559	1%
English	453	0.8%

Ancestry	Count	%
Polish	211	0.4%
German	137	0.2%
Dutch	68	0.1%
Norwegian	65	0.1%

Technology access

Metric	% of households
Computer access	35.9%
Internet access	98.6%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Mason, OH have?

Mason, OH has one ZIP code: 45040. Each ZIP code serves a distinct delivery area within the city and surrounding region.