Residential delivery area · Ohio
ZIP Code 45320: Eaton, OH
ZIP code 45320 uses the postal name Eaton, Ohio and lies entirely in Preble County (Census 2020 ZIP-county file). About 15,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $64,903 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Eaton (5%) and Lake Lakengren (2%); 93% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Eaton · its only residential ZIP
- County
- Preble County
- Census places
- Eaton (5%); Lake Lakengren (2%) census-designated place
- House district
- OH-8 119th Congress
- State
- Ohio
- Time zone
- Eastern
- Land area
- 134.0 sq mi · 115 people per sq mi
Where is ZIP code 45320?
45320 centers on 39.751°, -84.681° and covers 134.0 square miles of land plus 0.4 of water. It borders 9 ZIP codes: 45321, 45381, 45311, 45338, 45347, 45330, 45382, 47374, 47353.
The map draws ZIP code areas only. For the streets inside 45320, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 45320 compare with the rest of Preble County?
| Measure | 45320 | In Preble County | In OH |
|---|---|---|---|
| People (ACS 2020-2024) | 15,454 | 2nd of 15 | 288th of 1,233 |
| Median household income | $65k | 8th of 10 | 474th of 755 |
| Median home value | $186k | 8th of 10 | 433rd of 810 |
Its median household income is higher than in 38% of U.S. residential ZIP codes, and it is denser than 56% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 45320?
The 2020 Census counted 15,530 people in 45320; the ACS, which samples households over 2020-2024, estimates 15,454. Between the 2010 and 2020 censuses its population fell 1.0% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 15,454
- 2020 Census count
- 15,530−1.0% since 2010 (15,691)
- Households
- 6,659
- Median age
- 44.1
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 45320?
Of the 15,454 people the ACS estimates in 45320, 23.0% are under 18 and 21.6% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (95.0%).
- Under 1823.0%
- 18 to 6455.4%
- 65 and older21.6%
- White, not Hispanic95.0%
- Other or two or more3.8%
- Hispanic or Latino0.6%
- Black, not Hispanic0.6%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 45320 earn?
Median household income is $64,903 (ACS 2020-2024), the 8th highest of the 10 ranked ZIP codes in Preble County. It is not measurably different from 2015-2019 ($71,291 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $64,903±$7,923
- Income per person
- $34,703
- Below the poverty line
- 10.7%
- Unemployed (of the labor force)
- 2.5%
- Adults 25+ with a bachelor's degree
- 22.1%
- Adjusted gross income per tax return, 2022
- $64,8977,180 returns; wages 68% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 45320?
FHFA's house price index for 45320, built from repeat sales and appraisals of the same homes, rose 89% from 2015 to 2025 and rose 47% from 2020 to 2025, and moved +2.0% in 2025.
- Median home value (owners' estimate)
- $186,200
- Median gross rent
- $783
- Homes owned by their occupants
- 77.1%
- Housing units
- 7,154
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 45320?
326 business establishments had a location in this ZIP code in 2023, 19 fewer than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance59
- Retail trade52
- Other services (except public administration)39
- Construction32
- Accommodation and food services30
- Finance and insurance24
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 45320?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 45321 | Eldorado | 1,272 | $69k | 7.9 mi |
| 45381 | West Alexandria | 5,626 | $62k | 8.5 mi |
| 45311 | Camden | 5,701 | $69k | 8.5 mi |
| 45338 | Lewisburg | 4,761 | $75k | 10.1 mi |
| 45347 | New Paris | 4,095 | $63k | 10.3 mi |
| 45330 | Gratis | 710 | $77k | 10.8 mi |
| 45382 | West Manchester | 1,154 | $96k | 11.1 mi |
| 47374 | Richmond, IN | 44,615 | $51k | 12.5 mi |
| 47353 | Liberty, IN | 4,857 | $77k | 15.7 mi |
| 47324 | Boston, IN | 246 | $71k | 9.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.