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ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/45331

45331

ZIP 45331 is Greenville, Ohio, in Darke County; area code 937; Eastern time.

Type
Standard
Time zone
America/New_York
County
Darke
Metro area
Greenville, OH
Population
22,356
Coordinates
40.0986, -84.6505
☼ Live from 45331 — Greenville, OH

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Local time: —

Where 45331 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.

★ Weird and wonderful facts about 45331
  • 🔢 Type 45331 into a pocket calculator and turn it upside down: IEESh — not quite a word, sorry.
  • ➕ As a number, 45,331 = 11 × 13 × 317. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011000100010011
  • 🏠 Its numerical neighbours: 45330 (Gratis, OH, 32 mi away) and 45332 (Hollansburg, OH, 9 mi away).
  • 🔄 Backwards, 45331 becomes 13354 — and that is a real ZIP code: Holland Patent, NY, 530 miles away.
  • 👥 26 other ZIP codes are made of exactly the same digits (13345, 13354, 13435, 14533, 15334, 15433, …). The farthest-flung twin is 33145 in Miami, FL, 1,023 miles away.
  • 🧭 Farther north than 57% 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 45331 and you would come out at 40.10°S, 95.35°E — 1,273 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 02m of daylight. Shortest: 9h 19m.
  • 📏 At 151.2 square miles of land, 45331 is bigger than 86% of ZIP codes — room for about 115 Central Parks.
🌙 The sky over 45331 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population22,356This ZIP22,356
Households9,912This ZIP9,912
Housing units10,540This ZIP10,540
Median age43.1This ZIP43.1Ohio39.7US 38.9
Median household income$53,801This ZIP$53,801Ohio$71,389US $80,734
Median home value$166,200This ZIP$166,200Ohio$214,800US $332,700
Median gross rent$767This ZIP$767Ohio$1,034US $1,413
Bachelor's degree or higher16.9%This ZIP16.9%
Mean commute20.3 minThis ZIP20.3 min
Population density147.9 / sq miThis ZIP147.9 / sq mi

Business and tax activity

Business establishments585This ZIP585
Employees10,124This ZIP10,124
Annual payroll$457,681,000This ZIP$457,681,000
Tax returns filed10,720This ZIP10,720
Total adjusted gross income$628,047,000This ZIP$628,047,000

Land area

Land area151.18 sq miThis ZIP151.18 sq mi
Water area0.58 sq miThis ZIP0.58 sq mi

Other place names in 45331

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 45331

ZIPCityDistance
45352 Palestine, OH 6.0 mi
45303 Ansonia, OH 8.0 mi
45328 Gettysburg, OH 8.2 mi
45346 New Madison, OH 8.6 mi
45332 Hollansburg, OH 9.5 mi
45390 Union City, OH 9.9 mi
45308 Bradford, OH 10.4 mi
45304 Arcanum, OH 10.5 mi
45358 Pitsburg, OH 11.5 mi
45380 Versailles, OH 12.4 mi

Find every ZIP code within 10 miles of 45331 →

Questions about this ZIP code

Where is ZIP code 45331?

45331 is in Greenville, Ohio, in Darke County, part of the Greenville, OH micropolitan area. Its published point location is 40.0986, -84.6505.

What county is 45331 in?

45331 lies in Darke County.

What area code is 45331?

Greenville uses area code 937, from NANPA's telephone records.

What time zone is 45331 in?

45331 uses America/New_York.

How many people live in 45331?

About 22,356 people live in ZIP code 45331, in 9,912 households, at 147.9 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 45331?

$53,801 a year, against $71,389 across Ohio.

What ZIP codes are near 45331?

The closest are 45352 (6 mi), 45303 (8 mi), 45328 (8.2 mi), 45346 (8.6 mi) and 45332 (9.5 mi).

Is 45331 a PO Box ZIP code?

45331 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “45331 ZIP Code — Greenville, Ohio (Darke County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45331

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