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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/45405

45405

ZIP 45405 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
18,955
Coordinates
39.7922, -84.2160
☼ Live from 45405 — Dayton, OH

Weather right now

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Local time: —

Where 45405 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 45405
  • 🔢 Type 45405 into a pocket calculator and turn it upside down: SOhSh — not quite a word, sorry.
  • ➕ As a number, 45,405 = 3 × 3 × 5 × 1009. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011000101011101
  • 🏠 Its numerical neighbours: 45404 (Dayton, OH, 3 mi away) and 45406 (Dayton, OH, 1 mi away).
  • 🔄 Backwards, 45405 becomes 50454 — and that is a real ZIP code: Little Cedar, IA, 505 miles away.
  • 👥 17 other ZIP codes are made of exactly the same digits (04455, 04554, 05445, 05454, 05544, 44055, …). The farthest-flung twin is 04455 in Lee, ME, 895 miles away.
  • 🧭 Farther north than 55% of all ZIP codes, and farther east than 59%.
  • 🎯762 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 45405 and you would come out at 39.79°S, 95.78°E — 1,244 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 00m of daylight. Shortest: 9h 21m.
  • 📏 At 4.0 square miles of land, 45405 is bigger than 17% of ZIP codes — room for about 3.0 Central Parks.
🌙 The sky over 45405 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population18,955This ZIP18,955
Households8,903This ZIP8,903
Housing units11,695This ZIP11,695
Median age39.9This ZIP39.9Ohio39.7US 38.9
Median household income$43,973This ZIP$43,973Ohio$71,389US $80,734
Median home value$84,200This ZIP$84,200Ohio$214,800US $332,700
Median gross rent$934This ZIP$934Ohio$1,034US $1,413
Bachelor's degree or higher20.7%This ZIP20.7%
Mean commute18.5 minThis ZIP18.5 min
Population density4,777.0 / sq miThis ZIP4,777.0 / sq mi

Business and tax activity

Business establishments180This ZIP180
Employees3,630This ZIP3,630
Annual payroll$202,488,000This ZIP$202,488,000
Tax returns filed7,620This ZIP7,620
Total adjusted gross income$287,528,000This ZIP$287,528,000

Land area

Land area3.97 sq miThis ZIP3.97 sq mi
Water area0.08 sq miThis ZIP0.08 sq mi

Other place names in 45405

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

ZIP codes near 45405

ZIPCityDistance
45406 Dayton, OH 1.5 mi
45402 Dayton, OH 2.3 mi
45416 Dayton, OH 2.5 mi
45422 Dayton, OH 2.5 mi
45423 Dayton, OH 2.6 mi
45412 Dayton, OH 2.6 mi
45414 Dayton, OH 3.3 mi
45404 Dayton, OH 3.4 mi
45415 Dayton, OH 3.7 mi
45343 Miamisburg, OH 4.0 mi

Find every ZIP code within 10 miles of 45405 →

Questions about this ZIP code

Where is ZIP code 45405?

45405 is in Dayton, Ohio, in Montgomery County, part of the Dayton-Kettering-Beavercreek, OH metropolitan area. Its published point location is 39.7922, -84.2160.

What county is 45405 in?

45405 lies in Montgomery County.

What area code is 45405?

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

What time zone is 45405 in?

45405 uses America/New_York.

How many people live in 45405?

About 18,955 people live in ZIP code 45405, in 8,903 households, at 4,777.0 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 45405?

$43,973 a year, against $71,389 across Ohio.

What ZIP codes are near 45405?

The closest are 45406 (1.5 mi), 45402 (2.3 mi), 45416 (2.5 mi), 45422 (2.5 mi) and 45423 (2.6 mi).

Is 45405 a PO Box ZIP code?

45405 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “45405 ZIP Code — Dayton, Ohio (Montgomery County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45405

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