US ZIP Code
45312

Casstown, OH

Miami County  ·  Ohio

● Active
👥 1,109 Population ↓ 2% since 2019
💰 $89,653 Median HH Income
▲ 17% above avg ↑ 29% since 2019
🎂 49.3 Median Age
🏠 $253,500 Median Home Value
▼ 9% below avg ↑ 54% since 2019
🎓 22.7% College Grads
▼ 41% below avg
📊 5.6% Unemployment
▲ 14% above avg ↑ 55% since 2019
ZIP Code Details
ZIP Code45312
CityCasstown
StateOhio (OH)
CountyMiami County
Area Code326/937
Elevation1,024 ft
Latitude40.052155
Longitude-84.093025
TimezoneNew York (DST)
FIPS39109
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 54.6% (606) Female 45.4% (503) ♀

Race & Ethnicity

White: 96.7%Hispanic: 0.3%Other: 3.1%Race
White96.7%
Hispanic0.3%
Other3.1%

Age Breakdown

Under 5
4%
5–17
18%
18–24
7%
25–44
18%
45–64
18%
65+
19%

Key Indicators

Median Age49.3 yrs
Avg Household Size2.36
Below Poverty0.6% ▼ 94% below avg
College Grads22.7% ▼ 41% below avg
Unemployment5.6% ▲ 14% above avg
No HS Diploma10 (1.3%)
HS Graduate279 (36.2%)
Some College192 (24.9%)
Associates114 (14.8%)
Bachelors52 (6.8%)
Graduate Degree123 (16%)

Education

No HS: 1.3%HS Grad: 36.2%Some College: 24.9%Associates: 14.8%Bachelors: 6.8%Graduate: 16%Edu
No HS1.3%
HS Grad36.2%
Some College24.9%
Associates14.8%
Bachelors6.8%
Graduate16.0%
Housing & Income

Housing Tenure

Owner: 93%Renter: 7%Tenure
Owner93.0%
Renter7.0%

Home Value Distribution

Under $50k
2%
$50k–100k
8%
$100k–150k
18%
$150k–200k
18%
$200k–300k
24%
$300k–500k
23%
Over $500k
7%

Financials

Median HH Income$89,653 ▲ 17% above avg ↑ 29% since 2019
Median Home Value$253,500 ▼ 9% below avg ↑ 54% since 2019
Home/Income Ratio2.8x (nat avg ~3.5x)
Median Rent$1,071/mo ↑ 62% since 2019
Total Units508
Vacant Units39
Avg HH Size2.36

Income Distribution

Under $25k
11%
$25k–50k
14%
$50k–75k
13%
$75k–100k
19%
$100k–150k
32%
$150k–200k
2%
Over $200k
9%
Employment & Commute

How People Get to Work

Drove Alone
92%
Work From Home
8%

Commute Time

Under 15 min
12%
15–30 min
46%
30–45 min
40%
Over 45 min
2%
Housing Stock

Year Built

Before 1940
4%
1940s–1950s
8%
1960s–1970s
17%
1980s–1990s
9%
2000+
62%

Summary

Total Units508
Vacant39
Owner Occupied93.0%
Renter Occupied7.0%
Avg HH Size2.36
Frequently Asked Questions
ZIP code 45312 is in Casstown, OH, in Miami County.
ZIP code 45312 is located in Ohio (OH).
ZIP code 45312 is in Miami County, OH.
ZIP 45312 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 45312 is 1,109 people (ACS 2023).
The median household income in ZIP code 45312 is $89,653 (ACS 2023).
The median home value in ZIP 45312 is $253,500 (ACS 2023).
About ZIP Code 45312

ZIP code 45312 is located in Casstown, Ohio, within Miami County. With a population of 1,109, this is a sparsely populated ZIP code with a mature community — the median age is 49.3 years. Economically, 45312 is a middle-income ZIP code: the median household income of $89,653 is above the national average.

Real estate in ZIP code 45312 represents a mid-range housing market. The median home value of $253,500 is near the national average. Renters can expect to pay around $1,071 per month in median rent. Homeownership is strong here — 93.0% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 54% since 2019.

The population of 45312 is primarily White (96.66%). Residents are less-educated — 22.7% hold a bachelor's degree or higher, which is below the national average. Poverty affects a relatively small share of residents at 0.6%. Household income has grown by 29% since 2019.

The unemployment rate in 45312 stands at 5.6%, which is near the national average. As in most parts of the country, driving alone is the dominant commute mode at 85%.

Overall, ZIP code 45312 in Casstown, OH is characterized as middle-income, less-educated, a mature community, and predominantly owner-occupied. With 1,109 residents, a median household income of $89,653, and a median home value of $253,500, it offers a clear picture of life in this part of Ohio.