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Where 45320 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 45320 into a pocket calculator and turn it upside down: OZESh — not quite a word, sorry.
- ➕ As a number, 45,320 = 2 × 2 × 2 × 5 × 11 × 103. Its digits add up to 14, a total 1,416 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1011000100001000 - 🏠 Its numerical neighbours: 45319 (Donnelsville, OH, 41 mi away) and 45321 (Eldorado, OH, 8 mi away).
- 🔄 Backwards, 45320 becomes 02354, which is not a ZIP code at all.
- 👥 68 other ZIP codes are made of exactly the same digits (02345, 02453, 02534, 02543, 03245, 03254, …). The farthest-flung twin is 34205 in Bradenton, FL, 856 miles away.
- 🧭 Farther north than 54% of all ZIP codes, and farther east than 57%.
- 🎯737 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 45320 and you would come out at 39.75°S, 95.32°E — 1,266 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 59m of daylight. Shortest: 9h 21m.
- 📏 At 134.0 square miles of land, 45320 is bigger than 84% of ZIP codes — room for about 102 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 15,454This ZIP15,454 |
|---|---|
| Households | 6,659This ZIP6,659 |
| Housing units | 7,154This ZIP7,154 |
| Median age | 44.1This ZIP44.1Ohio39.7US 38.9 |
| Median household income | $64,903This ZIP$64,903Ohio$71,389US $80,734 |
| Median home value | $186,200This ZIP$186,200Ohio$214,800US $332,700 |
| Median gross rent | $783This ZIP$783Ohio$1,034US $1,413 |
| Bachelor's degree or higher | 22.1%This ZIP22.1% |
| Mean commute | 24.2 minThis ZIP24.2 min |
| Population density | 115.3 / sq miThis ZIP115.3 / sq mi |
Business and tax activity
| Business establishments | 326This ZIP326 |
|---|---|
| Employees | 6,477This ZIP6,477 |
| Annual payroll | $339,925,000This ZIP$339,925,000 |
| Tax returns filed | 7,180This ZIP7,180 |
| Total adjusted gross income | $465,958,000This ZIP$465,958,000 |
Land area
| Land area | 134.01 sq miThis ZIP134.01 sq mi |
|---|---|
| Water area | 0.40 sq miThis ZIP0.40 sq mi |
Other place names in 45320
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 45320
| ZIP | City | Distance |
|---|---|---|
45321 | Eldorado, OH | 7.9 mi |
45381 | West Alexandria, OH | 8.5 mi |
45311 | Camden, OH | 8.5 mi |
47324 | Boston, IN | 9.1 mi |
45338 | Lewisburg, OH | 10.1 mi |
45347 | New Paris, OH | 10.3 mi |
45330 | Gratis, OH | 10.8 mi |
45382 | West Manchester, OH | 11.1 mi |
47375 | Richmond, IN | 12.3 mi |
47374 | Richmond, IN | 12.5 mi |
Find every ZIP code within 10 miles of 45320 →
Questions about this ZIP code
Where is ZIP code 45320?
45320 is in Eaton, Ohio, in Preble County. Its published point location is 39.7507, -84.6813.
What county is 45320 in?
45320 lies in Preble County.
What area code is 45320?
Eaton uses area code 937, from NANPA's telephone records.
What time zone is 45320 in?
45320 uses America/New_York.
How many people live in 45320?
About 15,454 people live in ZIP code 45320, in 6,659 households, at 115.3 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What is the median household income in 45320?
$64,903 a year, against $71,389 across Ohio.
What ZIP codes are near 45320?
The closest are 45321 (7.9 mi), 45381 (8.5 mi), 45311 (8.5 mi), 47324 (9.1 mi) and 45338 (10.1 mi).
Is 45320 a PO Box ZIP code?
45320 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “45320 ZIP Code — Eaton, Ohio (Preble County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45320
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/45320.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.