PlainZIP

Eldorado, OH · standard

ZIP Code 45321

Preble County, Ohio - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

931
27/sq mi
$69,135
Median income
$150,900
Median home value
14.3%
Bachelor's or higher

The verdict

Eldorado pairs a below-median household income with below-median home values, in a rural, homeowner-dominated area.

45th pct
household income, US ZIPs
26th pct
home value, US ZIPs
27
people per sq mi
88%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 45321 against every reporting US ZIP.

ZIP code 45321 is a sparsely populated ZIP (a standard USPS delivery area) in Eldorado, Preble County, Ohio, home to just 931 residents across 34.0 square miles, a density of 27 people per square mile, in the New York time zone.

ZIP 45321 reports a modest median household income of $69,135 (5% below the Ohio average), while per-capita income is $31,472. Local economic indicators show a 11.5% poverty rate alongside 0.5% unemployment. Housing costs here run $150,900 for a typical home value (23% below the state average), with rent averaging $1,012 a month; 88.4% of homes are owner-occupied.

Formal educational attainment runs low here: just 14.3% of adults hold a bachelor's degree or higher, the median age is 29.1, and the average commute is 31 minutes. Beyond these figures, 7 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Preble County, letting you compare 45321 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 45321, Eldorado, OH · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

931

Population

34.0

Area (sq mi)

27

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 45321?

29.1

Median Age

51.9%

Male

48.1%

Female

0.1%

Foreign-Born

White 96.8%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 1.5%
Hispanic or Latino 0.4%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$69,135

Median Household Income

-5% vs state

$31,472

Per Capita Income

11.5%

Poverty Rate

0.5%

Unemployment Rate

30.5 min

Mean Commute Time

How ZIP 45321 ranks nationally

Eldorado, OH household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$69,135 45th percentile higher than 45% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 69.7%
Bachelor's Degree or Higher 14.3%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

432

Total Housing Units

424

Occupied Units

8

Vacant Units

3.00

Avg Household Size

Occupancy Type

Owner 88.4%
Renter 11.6%

$150,900

Median Home Value

-23% vs state

$1,012

Median Rent

1938

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

122

HPI Index (2000 = 100)

+22%

Total Change Since 2000

Year Annual Change HPI Index
2016 – 74
2019 – 109
2021 – 106
2024 – 122

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 6 business establishments in ZIP 45321, employing approximately 41 people with a combined annual payroll of $2,324,000.

6

Businesses

41

Employees

$2.3M

Annual Payroll

0

Industry Sectors

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 45321 vs 45382 →

ZIP 45321 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 45321 ranks #7 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 45321 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 45321 ranks #6 of 8 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
45382 West Manchester, OH 1,269 3.9 mi
45347 New Paris, OH 4,324 4.5 mi
45320 Eaton, OH 15,691 8.6 mi
45346 New Madison, OH 2,293 7.6 mi
45338 Lewisburg, OH 5,298 7.3 mi
45332 Hollansburg, OH 612 10.3 mi
45304 Arcanum, OH 7,300 11.1 mi

More ZIP Codes in Preble County

45320 standard
Eaton, OH
Pop: 15,691
45311 standard
Camden, OH
Pop: 6,367
45381 standard
West Alexandria, OH
Pop: 5,509
45338 standard
Lewisburg, OH
Pop: 5,298
45347 standard
New Paris, OH
Pop: 4,324
45382 standard
West Manchester, OH
Pop: 1,269

Related Areas

Preble County Eldorado, OH Ohio

Frequently Asked Questions

What county is ZIP code 45321 in? ▼
ZIP code 45321 (Eldorado) is located in Preble County, Ohio. Preble County contains multiple ZIP codes, see the full list at /counties/preble-oh.
What is the population of ZIP code 45321? ▼
ZIP code 45321 in Eldorado, OH has a population of 931 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 45321? ▼
The median household income in ZIP 45321 is $69,135, which is 9% below the national average of $76,288.
What is the average home value in ZIP 45321? ▼
The median home value in ZIP 45321 is $150,900, which is 46% below the national average of $278,155.
What is the demographic makeup of ZIP 45321? ▼
The largest racial group in ZIP 45321 is White at 96.8%. Hispanic or Latino residents make up 0.4% of the population.
How many businesses are in ZIP code 45321? ▼
ZIP code 45321 has 6 business establishments employing approximately 41 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 45321? ▼
In ZIP code 45321, 69.7% of residents aged 25+ have a high school diploma or higher, and 14.3% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 45321? ▼
The mean commute time for workers in ZIP code 45321 is 30.5 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 45321? ▼
In ZIP code 45321, approximately 88.4% of occupied housing units are owner-occupied and 11.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 45321? ▼
The poverty rate in ZIP code 45321 is 11.5% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.