GetZips
ZIP Code45051

Mount Saint Joseph, OH

Hamilton County · Ohio · United States
Home to 361 people across 0.454 square miles.

EasternRenter-majority78 ZIPs in county

At a glance

45051 by the numbers

Every figure below comes from the 2019–2023 American Community Survey 5-Year Estimates, the Census Gazetteer, or is computed from those. Margins of error are shown where they matter.

Population
361
±125 · bottom 25% nationally
Median household income
$63,523
US median $70,109 · 39th pctile
Median home value
US median $207,500 ·
Median age
74.8
US median 42 years
Population density
795/mi²
top 25% most dense
Land area
0.454 mi²
negligible water area

Location

Where 45051 is

39.099843, -84.655127 · Census ZCTA internal pointOpen larger map →
Coordinates39.099843, -84.655127
Time zoneAmerica/New_York
CountyHamilton County
StateOhio (OH)
Land area0.454 mi²
Coordinate sourceCensus ZCTA internal point

Local time

America/New_York

—:—:—

Current weather

Live from the National Weather Service

Loading forecast…

Distance to major cities

Straight-line, computed from coordinates

Chicago, IL247.5 mi
Atlanta, GA370.0 mi
Philadelphia, PA508.9 mi
New York, NY574.9 mi

People

Who lives in 45051

361 residents in 39 households, averaging 9.26 people per household. The largest age group is 65+ at 57.9% of residents, and 82.1% of households are families.

Age distribution

Share of residents by age band

Under 183.9%
18-2421.6%
25-343.6%
35-445.0%
45-544.2%
55-643.9%
65+57.9%

Households

Composition and size

Total households39
Average household size9.26
Family households82.1%
Living alone0.0%
Median age74.8 years
Households with internet100.0%

Race & ethnicity

Census race categories. Hispanic or Latino origin is asked separately and overlaps these groups.

White86.4%
Black10.0%
Asian3.6%

Income & work

What people earn in 45051

The median household here earns $63,523 a year, below the US median of $70,109, which puts 45051 ahead of 39% of American ZIP codes. 51.7% of residents live below the poverty line.

Compared to the US

This ZIP against the national median

Median household income$63,523
LowestHighest
Higher than 39% of all US ZIP codes.
Median household income$63,523 ±$55,724
Per capita income$18,108
Poverty rate51.7%
Unemployment rate0.0%
Labor force participation30.4%

Household income distribution

Share of households in each bracket

<$25k38.5%
$25-50k0.0%
$50-75k28.2%
$75-100k33.3%
$100-150k0.0%
$150-200k0.0%
$200k+0.0%

Educational attainment among residents 25 and older: 37.9% hold a bachelor's degree or higher, 100.0% finished high school.

Housing

Homes and rent in 45051

median rent runs $943 a month. This is a renter-majority area — 100.0% of occupied homes are rented, and the typical building went up in 1966.

Costs

Typical values

Median home value
Median gross rent$943/mo
Median year built1966
Housing units39
Vacancy rate0.0%

Own vs. rent

Of 39 occupied units

Owner-occupied0.0%
Renter-occupied100.0%
Owner households0
Renter households39

Building types

Units by structure size

2-4 units33.3%
5-19 units66.7%

Getting to work

How 45051 commutes

62.3% of workers carpooled, and the average one-way trip takes 21.0 minutes.

Mode of transport

Workers 16 and older

Drove alone37.7%
Carpooled62.3%

Travel time

Mean commute 21.0 minutes

<10 min25.5%
10-1935.8%
20-296.6%
30-4426.4%
45-595.7%
60+0.0%

Overview

Understanding ZIP code 45051

ZIP code 45051 is assigned to Mount Saint Joseph, OH, and falls within Hamilton County. Like every US postal code, it began as a mail-routing device rather than a geographic boundary — the US Postal Service groups delivery routes under a single code so carriers and sorting equipment can process mail efficiently. Today it also serves as a practical shorthand for the area itself: roughly 361 people live inside it.

At 795 residents per square mile spread over 0.454 square miles, 45051 reads as a small-town area. It is a sparsely populated postal code, and density shapes almost everything else on this page — how people get to work, whether they own or rent, and what housing costs.

Household earnings run below the national median. At $63,523, 45051 sits in the lower half, ahead of 39% of them. The US median for comparison is $70,109. Bear in mind that median income describes the midpoint household, not the average — it is not pulled upward by a handful of very high earners the way a mean would be.

Living here

What life in Mount Saint Joseph looks like

The building stock is dominated by mid-sized apartment buildings, which account for 66.7% of housing units here. The median construction year is 1966, making the housing here mid-century. At 0.0%, vacancy is low — housing here is tightly held.

The population skews considerably older than the national median, with a median age of 74.8 against 42 nationally. Households are relatively large at 9.26 people on average, with 82.1% classified as family households.

Getting to work takes 21.0 minutes on average one way. The dominant mode is carpooled at 62.3% of workers.

Where to stay

Where to stay in Mount Saint Joseph, OH

Mount Saint Joseph is a smaller community, so options inside 45051 may be limited to a handful of independent inns, motels or bed-and-breakfast properties. Travellers often widen the search to the surrounding area, where the choice is greater and prices are usually competitive.

Median rent in 45051 is $943 a month, which sits in the middle of the national range; accommodation pricing locally tends to be similarly mid-market. For reference, Chicago, IL is about 247.5 miles away in a straight line, which is worth factoring in if you are comparing a stay here against one closer to the city centre.

Availability and pricing change constantly, so the live search below will give you a more accurate picture than any figure we could publish here. It opens results for this area on Booking.com.

Book a Hotel →

Opens Booking.com in a new tab. We are not affiliated with Booking.com and receive nothing from this link.

Practical uses

What ZIP code 45051 is used for

Beyond addressing mail, 45051 does a lot of quiet administrative work. Retailers use it to calculate shipping and sales tax at checkout. Insurers use it to set premiums, since risk profiles vary geographically. Employers and marketers use it to define service areas. Government agencies use it to route benefits and organise reporting. If you have ever been asked for a postal code by a form that clearly does not intend to send you anything, this is why.

For anyone weighing a move, 45051 offers a compact profile of Mount Saint Joseph: 361 residents, a median household income of $63,523, 37.9% of adults holding a bachelor's degree or higher, and an unemployment rate of 0.0%. A handful of figures like these answer more relocation questions than most neighbourhood guides do.

One caution worth repeating: a postal code is not a neighbourhood. 45051 may cover parts of several distinct areas, and a single neighbourhood in Mount Saint Joseph may be split across more than one code. Boundaries also shift as USPS adjusts delivery routes. Treat the figures here as describing a delivery area, which is what they actually measure.

Look up another

Search any ZIP code

Questions

Common questions about 45051

What city is ZIP code 45051 in?
45051 serves Mount Saint Joseph, Ohio, in Hamilton County, United States.
What is the population of 45051?
About 361 people live in ZIP code 45051, according to the US Census Bureau's 2019–2023 American Community Survey 5-Year Estimates. The margin of error on that figure is ±125. That works out to roughly 795 people per square mile.
What is the average income in 45051?
The median household income in 45051 is $63,523 per year, compared with a US median of $70,109. Per capita income is $18,108. Median income is more representative than an average because it isn't skewed by a small number of very high earners.
Is 45051 a good place to live?
That depends on what you're looking for, but here are the facts: 37.9% of adults hold a bachelor's degree or higher, the unemployment rate is 0.0%, and the median age is 74.8. The average commute is 21.0 minutes. We publish the numbers and let you weigh them.
What time zone is 45051 in?
45051 observes Eastern Time (America/New_York). This zone observes daylight saving time.
How big is ZIP code 45051?
ZIP code 45051 covers 0.454 square miles of land, per the US Census Bureau's 2023 Gazetteer files.
Is 45051 urban, suburban or rural?
By population density, 45051 reads as a small-town area. It holds 795 people per square mile across 0.454 square miles of land. For reference, densities above 10,000 per square mile generally indicate an urban core, 1,000–3,000 is typically suburban, and under 200 is rural. These are rules of thumb rather than official designations — the Census Bureau classifies urban and rural areas by census block, not by ZIP code.
How much is rent in 45051?
Median gross rent in 45051 is $943 a month, according to the American Community Survey. Gross rent includes contract rent plus the estimated cost of utilities and fuels, so it is closer to what a tenant actually pays than a headline rent figure. Of 39 occupied homes here, 39 are rented.
What is the commute like from 45051?
The average one-way commute from 45051 takes about 21.0 minutes. The most common way to travel is carpooled, used by 62.3% of workers aged 16 and over. Commute figures cover people who were employed and working outside the home during the survey period.
How many people work in 45051?
About 106 residents of 45051 are employed. Labor force participation stands at 30.4% and the unemployment rate is 0.0%. Note this counts residents by where they live, not by where they work — a ZIP with many offices can have far more jobs than employed residents.
Where should I stay when visiting 45051?
Accommodation in and around Mount Saint Joseph, OH ranges with the character of the area. See the 'Where to stay' section on this page for local context, and use the live search there for current availability and pricing.
Does 45051 cover more than one city or county?
This page lists Mount Saint Joseph as the primary place and Hamilton County as the county. ZIP codes follow mail delivery routes rather than municipal or county lines, so a single code can straddle boundaries, and USPS also recognises alternate acceptable city names for many codes. If you need the definitive answer for a specific street address, the USPS ZIP Code Lookup is the authority.
Can ZIP code 45051 change?
Yes. USPS adjusts ZIP codes as delivery volumes shift — codes are occasionally split, merged, retired or newly created, and boundaries move more often than most people assume. The Census Bureau's ZCTA definitions, which underpin the demographic figures on this page, are redrawn only once a decade, so the two can drift apart between censuses.

Methodology

Where this data comes from

  • Postal geography — GeoNames open postal code database (CC BY 4.0), cross-checked against the US Census Gazetteer.
  • Demographics, income, housing, commute — US Census Bureau, American Community Survey 2019–2023 5-Year Estimates, ZIP Code Tabulation Area 45051. Tables B01001, B01002, B01003, B02001, B03003, B08301, B08303, B11001, B15003, B17001, B19001, B19013, B19301, B23025, B25002, B25003, B25024, B25035, B25064, B25077, B28002.
  • Land and water area — US Census Bureau 2023 Gazetteer Files.
  • Weather — NOAA National Weather Service, fetched live in your browser.
  • Map — OpenStreetMap contributors (ODbL).
On accuracy. ACS figures are survey estimates, not counts. The margin of error shown alongside the population figure means the true value has a 90% chance of falling in that range. For small ZIP codes the error can be large relative to the estimate — treat the direction as more reliable than the exact number. This page reports data for ZCTA 45051, the Census approximation of the USPS delivery area.