ZIP Code Tabulation Area · Ohio

ZIP Code 45040: Mason, OH

ZIP Code 45040 (Mason, Warren County, Ohio) has an estimated 59,518 residents in 22,000 households. The median household income is $133,240, the median home value is $440,000 and the median gross rent is $1,811/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Total population

59,518

Margin of error ±1,237

Median household income

$133,240

Margin of error ±$5,952

Median home value

$440,000

Margin of error ±$16,059

Median gross rent

$1,811/mo

Margin of error ±$80

Median age

41.5 yrs

Margin of error ±1.0 yrs

Mean travel time to work

23.6 min

Margin of error ±2.2 min

How ZIP 45040 compares with Ohio and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 4504041.5 yrsOhio39.7 yrsUnited States38.9 yrs

Median household income

ZIP 45040$133,240Ohio$71,389United States$80,734

Per capita income

ZIP 45040$66,545Ohio$40,552United States$44,673

Poverty rate

ZIP 450404.6%Ohio13.3%United States12.5%

Unemployment rate

ZIP 450402.4%Ohio4.8%United States5.2%

Bachelor's degree or higher

ZIP 4504063.0%Ohio31.5%United States35.7%

Median home value

ZIP 45040$440,000Ohio$214,800United States$332,700

Median gross rent

ZIP 45040$1,811/moOhio$1,034/moUnited States$1,413/mo

Owner-occupied homes

ZIP 4504077.7%Ohio67.2%United States65.2%

Mean travel time to work

ZIP 4504023.6 minOhio23.4 minUnited States26.4 min

Worked from home

ZIP 4504023.6%Ohio13.0%United States15.1%

All figures for ZIP 45040

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 45040 — ACS 2020–2024 5-year estimates
Measure	ZIP 45040	Margin of error	Ohio	United States
Total population	59,518	±1,237	11,810,293	334,922,499
Median age	41.5 yrs	±1.0 yrs	39.7 yrs	38.9 yrs
Households	22,000	±727	4,863,191	129,227,496
Median household income	$133,240	±$5,952	$71,389	$80,734
Per capita income	$66,545	±$4,508	$40,552	$44,673
Poverty rate	4.6%	±1.2 pts	13.3%	12.5%
Unemployment rate	2.4%	±1.0 pts	4.8%	5.2%
Bachelor's degree or higher	63.0%	±3.0 pts	31.5%	35.7%
Median home value	$440,000	±$16,059	$214,800	$332,700
Median gross rent	$1,811/mo	±$80	$1,034/mo	$1,413/mo
Owner-occupied homes	77.7%	±2.4 pts	67.2%	65.2%
Mean travel time to work	23.6 min	±2.2 min	23.4 min	26.4 min
Worked from home	23.6%	±2.3 pts	13.0%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 45040
Group	ZIP 45040	Ohio	United States
White alone, not Hispanic or Latino	68.2%	75.8%	57.4%
Black or African American alone, not Hispanic or Latino	3.6%	12.0%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	0.1%	0.5%
Asian alone, not Hispanic or Latino	19.7%	2.5%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.0%	0.2%
Some other race alone, not Hispanic or Latino	0.3%	0.4%	0.6%
Two or more races, not Hispanic or Latino	4.1%	4.3%	4.3%
Hispanic or Latino (of any race)	4.0%	4.8%	19.3%

Where ZIP 45040 is

State: Ohio
Main county: Warren County
Largest overlapping place: Mason (62% of the ZIP's land area)
Land area: 28.45 sq mi· about 2,092 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Warren County

45005 Franklin, OH 45032 Harveysburg, OH 45034 Kings Mills, OH 45036 Warren County, OH 45039 Warren County, OH 45054 Warren County, OH 45065 South Lebanon, OH 45066 Springboro, OH 45068 Warren County, OH 45152 Warren County, OH 45162 Warren County, OH

See every ZIP code in Ohio, or compare ZIP 45040 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.