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 Moderate-density area
- $69,135
- Median income Near-median income area
- $150,900
- Median home value Below-median home value
- 14.3%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
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 average Ohio ZIP), while per-capita income is $31,472. The poverty rate is 11.5%, with unemployment at 0.5%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $150,900 (23% below the average Ohio ZIP), and median rent is $1,012; owner occupancy is 88.4%.
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. The page also surfaces 7 ZIP codes within roughly 10 miles and 6 more in Preble County, so 45321 can be compared with both its immediate and county-level context.
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
Who lives in ZIP 45321?
29.1
Median Age
51.9%
Male
48.1%
Female
0.1%
Foreign-Born
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 ZIP avg
$31,472
Per Capita Income
11.5%
Poverty Rate
0.5%
Unemployment Rate
30.5 min
Mean Commute Time
How ZIP 45321 ranks among Ohio ZIPs
Eldorado, OH household income vs. every Ohio ZIP code
Median household income among 1,127 reporting Ohio ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$69,135 47th percentile higher than 47% of 1,127 Ohio ZIPs
Each bar is a $20K-wide band; taller bars hold more Ohio 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
432housing units
432
Total Housing Units
424
Occupied Units
8
Vacant Units
3.00
Avg Household Size
Occupancy Type
$150,900
Median Home Value
-23% vs state ZIP avg
$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.
- 45320
Eaton (45320)
15,691 residents
- 45304
Arcanum (45304)
7,300 residents
- 45338 5,298
Lewisburg (45338)
5,298 residents
- 45347 4,324
New Paris (45347)
4,324 residents
- 45346 2,293
New Madison (45346)
2,293 residents
- 45382 1,269
West Manchester (45382)
1,269 residents
- 45321 931
Eldorado (45321)
931 residents
- 45332 612
Hollansburg (45332)
612 residents
What this shows Among its immediate neighbors, ZIP 45321 ranks #7 by population - useful context the national average alone can't give.
ZIP 45321 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 45382
West Manchester (45382)
$95,652 median income
- 45304
Arcanum (45304)
$78,125 median income
- 45332
Hollansburg (45332)
$77,250 median income
- 45346
New Madison (45346)
$77,083 median income
- 45338
Lewisburg (45338)
$74,776 median income
- 45321
Eldorado (45321)
$69,135 median income
- 45320
Eaton (45320)
$64,903 median income
- 45347
New Paris (45347)
$63,025 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.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 45321, both outside OH so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Preble County
Related Areas
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.
Related
Take this with you
What to do with ZIP 45321's numbers, next.
- See how ZIP 45321 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Eldorado, OH ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.