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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/43780

43780

ZIP 43780 is Senecaville, Ohio, mostly in Guernsey County; area codes 740 and 220; Eastern time.

Type
Standard
Time zone
America/New_York
County
Guernsey +1 more
Metro area
Cambridge, OH
Population
2,515
Coordinates
39.9087, -81.4380
☼ Live from 43780 — Senecaville, OH

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Local time: —

Where 43780 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 43780
  • 🔢 Type 43780 into a pocket calculator and turn it upside down: OBLEh — not quite a word, sorry.
  • ➕ As a number, 43,780 = 2 × 2 × 5 × 11 × 199. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1010101100000100
  • 🏠 Its numerical neighbours: 43779 (Sarahsville, OH, 6 mi away) and 43782 (Shawnee, OH, 46 mi away).
  • 🔄 Backwards, 43780 becomes 08734 — and that is a real ZIP code: Lanoka Harbor, NJ, 385 miles away.
  • 👥 53 other ZIP codes are made of exactly the same digits (03748, 03784, 03847, 03874, 04738, 04783, …). The farthest-flung twin is 83704 in Boise, ID, 1,801 miles away.
  • 🧭 Farther north than 56% of all ZIP codes, and farther east than 69%.
  • 🎯908 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 43780 and you would come out at 39.91°S, 98.56°E — 1,110 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 00m of daylight. Shortest: 9h 20m.
  • 📏 At 38.9 square miles of land, 43780 is bigger than 52% of ZIP codes — room for about 30 Central Parks.
🌙 The sky over 43780 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population2,515This ZIP2,515
Households899This ZIP899
Housing units1,659This ZIP1,659
Median age40.2This ZIP40.2Ohio39.7US 38.9
Median household income$66,080This ZIP$66,080Ohio$71,389US $80,734
Median home value$181,300This ZIP$181,300Ohio$214,800US $332,700
Median gross rent$1,003This ZIP$1,003Ohio$1,034US $1,413
Bachelor's degree or higher16.2%This ZIP16.2%
Mean commute26.1 minThis ZIP26.1 min
Population density64.7 / sq miThis ZIP64.7 / sq mi

Business and tax activity

Business establishments19This ZIP19
Employees93This ZIP93
Annual payroll$6,274,000This ZIP$6,274,000
Tax returns filed1,080This ZIP1,080
Total adjusted gross income$78,796,000This ZIP$78,796,000

Land area

Land area38.86 sq miThis ZIP38.86 sq mi
Water area2.99 sq miThis ZIP2.99 sq mi

Counties 43780 spans

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

CountyShare of this ZIP
Guernsey County 63.6%
Noble County 36.4%

Other place names in 43780

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

ZIP codes near 43780

ZIPCityDistance
43722 Buffalo, OH 4.4 mi
43772 Pleasant City, OH 5.0 mi
43733 Derwent, OH 5.5 mi
43779 Sarahsville, OH 6.2 mi
43723 Byesville, OH 6.6 mi
43750 Kipling, OH 7.3 mi
43778 Salesville, OH 7.9 mi
43711 Ava, OH 8.7 mi
43768 Old Washington, OH 8.9 mi
43773 Quaker City, OH 8.9 mi

Find every ZIP code within 10 miles of 43780 →

Questions about this ZIP code

Where is ZIP code 43780?

43780 is in Senecaville, Ohio, in Guernsey County, part of the Cambridge, OH micropolitan area. Its published point location is 39.9087, -81.4380.

What county is 43780 in?

43780 spans 2 counties: Guernsey County and Noble County. Most of it falls in Guernsey 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 43780?

Senecaville uses area codes 740 and 220, from NANPA's telephone records.

What time zone is 43780 in?

43780 uses America/New_York.

How many people live in 43780?

About 2,515 people live in ZIP code 43780, in 899 households, at 64.7 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 43780?

$66,080 a year, against $71,389 across Ohio.

What ZIP codes are near 43780?

The closest are 43722 (4.4 mi), 43772 (5 mi), 43733 (5.5 mi), 43779 (6.2 mi) and 43723 (6.6 mi).

Is 43780 a PO Box ZIP code?

43780 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “43780 ZIP Code — Senecaville, Ohio (Guernsey County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/43780

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/43780.json

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