US ZIP Code
45321

Eldorado, OH

Preble County  ·  Ohio

● Active
👥 1,254 Population ↑ 59% since 2019
💰 $67,153 Median HH Income
▼ 12% below avg ↑ 22% since 2019
🎂 29.0 Median Age ↓ 34% since 2019
🏠 $129,200 Median Home Value
▼ 54% below avg ↑ 37% since 2019
🎓 27.5% College Grads
▼ 29% below avg
📊 3.0% Unemployment
▼ 39% below avg ↓ 58% since 2019
ZIP Code Details
ZIP Code45321
CityEldorado
StateOhio (OH)
CountyPreble County
Area Code326/937
Elevation1,122 ft
Latitude39.865253
Longitude-84.686962
TimezoneNew York (DST)
FIPS39135
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 53.0% (664) Female 47.1% (590) ♀

Race & Ethnicity

White: 97.1%Other: 1.7%Race
White97.1%
Other1.7%

Age Breakdown

Under 5
12%
5–17
18%
18–24
12%
25–44
27%
45–64
16%
65+
6%

Key Indicators

Median Age29.0 yrs ↓ 34% since 2019
Avg Household Size2.74
Below Poverty12.9% ▲ 29% above avg
College Grads27.5% ▼ 29% below avg
Unemployment3.0% ▼ 39% below avg
No HS Diploma9 (1.4%)
HS Graduate364 (54.7%)
Some College59 (8.9%)
Associates51 (7.7%)
Bachelors76 (11.4%)
Graduate Degree107 (16.1%)

Education

No HS: 1.4%HS Grad: 54.7%Some College: 8.9%Associates: 7.7%Bachelors: 11.4%Graduate: 16.1%Edu
No HS1.4%
HS Grad54.7%
Some College8.9%
Associates7.7%
Bachelors11.4%
Graduate16.1%
Housing & Income

Housing Tenure

Owner: 85.8%Renter: 14.2%Tenure
Owner85.8%
Renter14.2%

Home Value Distribution

Under $50k
3%
$50k–100k
31%
$100k–150k
23%
$150k–200k
22%
$200k–300k
16%
$300k–500k
1%
Over $500k
3%

Financials

Median HH Income$67,153 ▼ 12% below avg ↑ 22% since 2019
Median Home Value$129,200 ▼ 54% below avg ↑ 37% since 2019
Home/Income Ratio1.9x (nat avg ~3.5x)
Median Rent$983/mo ↑ 12% since 2019
Total Units457
Avg HH Size2.74

Income Distribution

Under $25k
15%
$25k–50k
13%
$50k–75k
34%
$75k–100k
15%
$100k–150k
10%
$150k–200k
6%
Over $200k
6%
Employment & Commute

How People Get to Work

Drove Alone
94%
Walked
2%
Work From Home
4%

Commute Time

Under 15 min
14%
15–30 min
52%
30–45 min
12%
Over 45 min
22%
Housing Stock

Year Built

Before 1940
4%
1940s–1950s
13%
1960s–1970s
8%
1980s–1990s
4%
2000+
70%

Summary

Total Units457
Owner Occupied85.8%
Renter Occupied14.2%
Avg HH Size2.74
Frequently Asked Questions
ZIP code 45321 is in Eldorado, OH, in Preble County.
ZIP code 45321 is located in Ohio (OH).
ZIP code 45321 is in Preble County, OH.
ZIP 45321 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 45321 is 1,254 people (ACS 2023).
The median household income in ZIP code 45321 is $67,153 (ACS 2023).
The median home value in ZIP 45321 is $129,200 (ACS 2023).
About ZIP Code 45321

ZIP code 45321 is located in Eldorado, Ohio, within Preble County. With a population of 1,254, this is a sparsely populated ZIP code with a young community — the median age is 29 years. Economically, 45321 is a solidly middle-class ZIP code: the median household income of $67,153 is near the national average.

Real estate in ZIP code 45321 represents one of the more affordable housing markets in the country. The median home value of $129,200 is well below the national average. Renters can expect to pay around $983 per month in median rent. Homeownership is strong here — 85.8% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 37% since 2019.

The population of 45321 is primarily White (97.13%). Residents are moderately educated — 27.5% hold a bachelor's degree or higher, which is below the national average. Poverty affects some residents at 12.9%. Household income has grown by 22% since 2019.

The unemployment rate in 45321 stands at 3.0%, which is below the national average. As in most parts of the country, driving alone is the dominant commute mode at 81%.

Overall, ZIP code 45321 in Eldorado, OH is characterized as solidly middle-class, moderately educated, a young community, and predominantly owner-occupied. With 1,254 residents, a median household income of $67,153, and a median home value of $129,200, it offers a clear picture of life in this part of Ohio.