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zipcodes.pro — ZIP/45312

45312

ZIP 45312 is Casstown, Ohio, mostly in Miami County; area code 937; Eastern time.

Type
Standard
Time zone
America/New_York
County
Miami +1 more
Population
1,086
Coordinates
40.0522, -84.0930
☼ Live from 45312 — Casstown, OH

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Local time: —

Where 45312 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 45312
  • 🔢 Type 45312 into a pocket calculator and turn it upside down: ZIESh — not quite a word, sorry.
  • ➕ As a number, 45,312 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 59. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011000100000000
  • 🏠 Its numerical neighbours: 45311 (Camden, OH, 42 mi away) and 45314 (Cedarville, OH, 27 mi away).
  • 🔄 Backwards, 45312 becomes 21354, which is not a ZIP code at all.
  • 👥 66 other ZIP codes are made of exactly the same digits (12345, 12435, 12453, 12534, 12543, 13425, …). The farthest-flung twin is 34251 in Myakka City, FL, 883 miles away.
  • 🧭 Farther north than 57% of all ZIP codes, and farther east than 60%.
  • 🎯767 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 45312 and you would come out at 40.05°S, 95.91°E — 1,244 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 01m of daylight. Shortest: 9h 19m.
  • 📏 At 27.3 square miles of land, 45312 is bigger than 44% of ZIP codes — room for about 21 Central Parks.
🌙 The sky over 45312 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,086This ZIP1,086
Households484This ZIP484
Housing units518This ZIP518
Median age52.7This ZIP52.7Ohio39.7US 38.9
Median household income$91,842This ZIP$91,842Ohio$71,389US $80,734
Median home value$279,400This ZIP$279,400Ohio$214,800US $332,700
Median gross rent$1,156This ZIP$1,156Ohio$1,034US $1,413
Bachelor's degree or higher22.6%This ZIP22.6%
Mean commute21.4 minThis ZIP21.4 min
Population density39.7 / sq miThis ZIP39.7 / sq mi

Business and tax activity

Business establishments15This ZIP15
Employees25This ZIP25
Annual payroll$1,844,000This ZIP$1,844,000
Tax returns filed720This ZIP720
Total adjusted gross income$60,542,000This ZIP$60,542,000

Land area

Land area27.33 sq miThis ZIP27.33 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Counties 45312 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Miami County 98.0%
Champaign County 2.0%

Other place names in 45312

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

ZIP codes near 45312

ZIPCityDistance
45389 Christiansburg, OH 3.6 mi
45373 Troy, OH 5.6 mi
45326 Fletcher, OH 6.1 mi
45374 Troy, OH 7.3 mi
45344 New Carlisle, OH 8.1 mi
43072 Saint Paris, OH 8.5 mi
45371 Tipp City, OH 8.6 mi
45349 North Hampton, OH 9.2 mi
45317 Conover, OH 9.6 mi
45356 Piqua, OH 10.5 mi

Find every ZIP code within 10 miles of 45312 →

Questions about this ZIP code

Where is ZIP code 45312?

45312 is in Casstown, Ohio, in Miami County, part of the Dayton-Kettering-Beavercreek, OH metropolitan area. Its published point location is 40.0522, -84.0930.

What county is 45312 in?

45312 spans 2 counties: Miami County and Champaign County. Most of it falls in Miami County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 45312?

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

What time zone is 45312 in?

45312 uses America/New_York.

How many people live in 45312?

About 1,086 people live in ZIP code 45312, in 484 households, at 39.7 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 45312?

$91,842 a year, against $71,389 across Ohio.

What ZIP codes are near 45312?

The closest are 45389 (3.6 mi), 45373 (5.6 mi), 45326 (6.1 mi), 45374 (7.3 mi) and 45344 (8.1 mi).

Is 45312 a PO Box ZIP code?

45312 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “45312 ZIP Code — Casstown, Ohio (Miami County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45312

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/45312.json

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