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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/45403

45403

ZIP 45403 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
13,608
Coordinates
39.7634, -84.1497
☼ Live from 45403 — Dayton, OH

Weather right now

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Local time: —

Where 45403 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 45403
  • 🔢 Type 45403 into a pocket calculator and turn it upside down: EOhSh — not quite a word, sorry.
  • ➕ 45403 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011000101011011
  • 🏠 Its numerical neighbours: 45402 (Dayton, OH, 3 mi away) and 45404 (Dayton, OH, 2 mi away).
  • 🔄 Backwards, 45403 becomes 30454 — and that is a real ZIP code: Rockledge, GA, 512 miles away.
  • 👥 36 other ZIP codes are made of exactly the same digits (03445, 04345, 04354, 04435, 04453, 04543, …). The farthest-flung twin is 34054 in FPO AA, a military post office, 2,063 miles away.
  • 🧭 Farther north than 54% of all ZIP codes, and farther east than 59%.
  • 🎯765 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 45403 and you would come out at 39.76°S, 95.85°E — 1,240 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 59m of daylight. Shortest: 9h 21m.
  • 📏 At 3.1 square miles of land, 45403 is bigger than 15% of ZIP codes — room for about 2.4 Central Parks.
🌙 The sky over 45403 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population13,608This ZIP13,608
Households6,247This ZIP6,247
Housing units7,310This ZIP7,310
Median age35.0This ZIP35.0Ohio39.7US 38.9
Median household income$38,323This ZIP$38,323Ohio$71,389US $80,734
Median home value$87,500This ZIP$87,500Ohio$214,800US $332,700
Median gross rent$779This ZIP$779Ohio$1,034US $1,413
Bachelor's degree or higher13.3%This ZIP13.3%
Mean commute24.9 minThis ZIP24.9 min
Population density4,324.1 / sq miThis ZIP4,324.1 / sq mi

Business and tax activity

Business establishments216This ZIP216
Employees2,898This ZIP2,898
Annual payroll$141,727,000This ZIP$141,727,000
Tax returns filed5,640This ZIP5,640
Total adjusted gross income$211,292,000This ZIP$211,292,000

Land area

Land area3.15 sq miThis ZIP3.15 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 45403

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

ZIP codes near 45403

ZIPCityDistance
45410 Dayton, OH 1.2 mi
45404 Dayton, OH 1.7 mi
45423 Dayton, OH 2.2 mi
45469 Dayton, OH 2.2 mi
45412 Dayton, OH 2.2 mi
45422 Dayton, OH 2.7 mi
45402 Dayton, OH 3.1 mi
45479 Dayton, OH 3.1 mi
45420 Dayton, OH 3.3 mi
45431 Dayton, OH 3.5 mi

Find every ZIP code within 10 miles of 45403 →

Questions about this ZIP code

Where is ZIP code 45403?

45403 is in Dayton, Ohio, in Montgomery County, part of the Dayton-Kettering-Beavercreek, OH metropolitan area. Its published point location is 39.7634, -84.1497.

What county is 45403 in?

45403 lies in Montgomery County.

What area code is 45403?

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

What time zone is 45403 in?

45403 uses America/New_York.

How many people live in 45403?

About 13,608 people live in ZIP code 45403, in 6,247 households, at 4,324.1 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 45403?

$38,323 a year, against $71,389 across Ohio.

What ZIP codes are near 45403?

The closest are 45410 (1.2 mi), 45404 (1.7 mi), 45423 (2.2 mi), 45469 (2.2 mi) and 45412 (2.2 mi).

Is 45403 a PO Box ZIP code?

45403 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “45403 ZIP Code — Dayton, Ohio (Montgomery County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45403

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