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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/45101

45101

ZIP 45101 is Aberdeen, Ohio, mostly in Brown County; area codes 326 and 937; Eastern time.

Type
Standard
Time zone
America/New_York
County
Brown +1 more
Population
2,035
Coordinates
38.6970, -83.7267
☼ Live from 45101 — Aberdeen, OH

Weather right now

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Local time: —

Where 45101 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 45101
  • 🔢 Type 45101 into a pocket calculator and turn it upside down: IOISh — not quite a word, sorry.
  • ➕ As a number, 45,101 = 7 × 17 × 379. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011000000101101
  • 🏠 Its numerical neighbours: 45071 (West Chester, OH, 57 mi away) and 45102 (Amelia, OH, 34 mi away).
  • 🔄 Backwards, 45101 becomes 10154 — and that is a real ZIP code: New York, NY, 537 miles away.
  • 👥 33 other ZIP codes are made of exactly the same digits (01451, 01541, 05141, 10154, 10451, 10514, …). The farthest-flung twin is 51104 in Sioux City, IA, 715 miles away.
  • 🧭 Farther south than 53% of all ZIP codes, and farther east than 61%.
  • 🎯797 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 45101 and you would come out at 38.70°S, 96.27°E — 1,195 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 53m of daylight. Shortest: 9h 27m.
  • 📏 At 17.8 square miles of land, 45101 is bigger than 35% of ZIP codes — room for about 13 Central Parks.
🌙 The sky over 45101 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population2,035This ZIP2,035
Households824This ZIP824
Housing units1,048This ZIP1,048
Median age40.2This ZIP40.2Ohio39.7US 38.9
Median household income$40,714This ZIP$40,714Ohio$71,389US $80,734
Median home value$156,700This ZIP$156,700Ohio$214,800US $332,700
Median gross rent$588This ZIP$588Ohio$1,034US $1,413
Bachelor's degree or higher8.8%This ZIP8.8%
Mean commute31.6 minThis ZIP31.6 min
Population density114.6 / sq miThis ZIP114.6 / sq mi

Business and tax activity

Business establishments28This ZIP28
Employees198This ZIP198
Annual payroll$8,088,000This ZIP$8,088,000
Tax returns filed860This ZIP860
Total adjusted gross income$39,723,000This ZIP$39,723,000

Land area

Land area17.76 sq miThis ZIP17.76 sq mi
Water area0.33 sq miThis ZIP0.33 sq mi

Counties 45101 spans

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

CountyShare of this ZIP
Brown County 98.6%
Adams County 1.4%

Other place names in 45101

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

ZIP codes near 45101

ZIPCityDistance
45144 Manchester, OH 6.0 mi
45167 Ripley, OH 6.8 mi
41056 Maysville, KY 7.1 mi
45105 Bentonville, OH 7.2 mi
41096 Washington, KY 7.3 mi
45115 Decatur, OH 7.8 mi
41034 Dover, KY 9.4 mi
41062 Minerva, KY 10.4 mi
45168 Russellville, OH 10.8 mi
45693 West Union, OH 13.0 mi

Find every ZIP code within 10 miles of 45101 →

Questions about this ZIP code

Where is ZIP code 45101?

45101 is in Aberdeen, Ohio, in Brown County, part of the Cincinnati, OH-KY-IN metropolitan area. Its published point location is 38.6970, -83.7267.

What county is 45101 in?

45101 spans 2 counties: Brown County and Adams County. Most of it falls in Brown 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 45101?

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

What time zone is 45101 in?

45101 uses America/New_York.

How many people live in 45101?

About 2,035 people live in ZIP code 45101, in 824 households, at 114.6 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 45101?

$40,714 a year, against $71,389 across Ohio.

What ZIP codes are near 45101?

The closest are 45144 (6 mi), 45167 (6.8 mi), 41056 (7.1 mi), 45105 (7.2 mi) and 41096 (7.3 mi).

Is 45101 a PO Box ZIP code?

45101 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “45101 ZIP Code — Aberdeen, Ohio (Brown County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45101

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/45101.json

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