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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/45428

45428

ZIP 45428 is in Dayton, Ohio, in Montgomery County; area codes 937 and 326; Eastern time. Dayton has 43 ZIP codes in all.

Type
Standard
Time zone
America/New_York
County
Montgomery
Population
272
Coordinates
39.7421, -84.2595
☼ Live from 45428 — Dayton, OH

Weather right now

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Local time: —

Where 45428 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 45428
  • 🔢 Type 45428 into a pocket calculator and turn it upside down: BZhSh — not quite a word, sorry.
  • ➕ As a number, 45,428 = 2 × 2 × 41 × 277. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011000101110100
  • 🏠 Its numerical neighbours: 45426 (Dayton, OH, 5 mi away) and 45429 (Dayton, OH, 7 mi away).
  • 🔄 Backwards, 45428 becomes 82454, which is not a ZIP code at all.
  • 👥 23 other ZIP codes are made of exactly the same digits (24458, 24485, 24845, 24854, 25844, 28445, …). The farthest-flung twin is 85244 in Chandler, AZ, 1,590 miles away.
  • 🧭 Farther north than 54% of all ZIP codes, and farther east than 59%.
  • 🎯760 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 45428 and you would come out at 39.74°S, 95.74°E — 1,245 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 59m of daylight. Shortest: 9h 21m.
  • 📏 At 0.455 square miles of land, 45428 is bigger than 5% of ZIP codes — about 220 football fields.
🌙 The sky over 45428 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population272This ZIP272
Households30This ZIP30
Housing units30This ZIP30
Median age75.1This ZIP75.1Ohio39.7US 38.9
Bachelor's degree or higher28.3%This ZIP28.3%
Population density597.8 / sq miThis ZIP597.8 / sq mi

Business and tax activity

Business establishments10This ZIP10
Employees2,840This ZIP2,840
Annual payroll$221,235,000This ZIP$221,235,000

Land area

Land area0.46 sq miThis ZIP0.46 sq mi
Water area0.00 sq mi

Other place names in 45428

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

ZIP codes near 45428

ZIPCityDistance
45343 Miamisburg, OH 0.8 mi
45401 Dayton, OH 0.8 mi
45413 Dayton, OH 0.8 mi
45437 Dayton, OH 0.8 mi
45441 Dayton, OH 0.8 mi
45448 Dayton, OH 0.8 mi
45470 Dayton, OH 0.8 mi
45475 Dayton, OH 0.8 mi
45481 Dayton, OH 0.8 mi
45482 Dayton, OH 0.8 mi

Find every ZIP code within 10 miles of 45428 →

Questions about this ZIP code

Where is ZIP code 45428?

45428 is in Dayton, Ohio, in Montgomery County, part of the Dayton-Kettering-Beavercreek, OH metropolitan area. Its published point location is 39.7421, -84.2595.

What county is 45428 in?

45428 lies in Montgomery County.

What area code is 45428?

Dayton uses area codes 937 and 326, from NANPA's telephone records.

What time zone is 45428 in?

45428 uses America/New_York.

How many people live in 45428?

About 272 people live in ZIP code 45428, in 30 households, at 597.8 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What ZIP codes are near 45428?

The closest are 45343 (0.8 mi), 45401 (0.8 mi), 45413 (0.8 mi), 45437 (0.8 mi) and 45441 (0.8 mi).

Is 45428 a PO Box ZIP code?

45428 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “45428 ZIP Code — Dayton, Ohio (Montgomery County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45428

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