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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/45712

45712

ZIP 45712 is Barlow, Ohio, in Washington County; area codes 740 and 220; Eastern time.

Type
No street area
Time zone
America/New_York
County
Washington
Metro area
Marietta, OH
Coordinates
39.3987, -81.6649

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 45784, whose figures describe that area — not this ZIP code.

☼ Live from 45712 — Barlow, OH

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Where 45712 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 45712
  • 🔢 Type 45712 into a pocket calculator and turn it upside down: ZILSh — not quite a word, sorry.
  • ➕ As a number, 45,712 = 2 × 2 × 2 × 2 × 2857. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011001010010000
  • 🏠 Its numerical neighbours: 45711 (Amesville, OH, 14 mi away) and 45713 (Bartlett, OH, 8 mi away).
  • 🔄 Backwards, 45712 becomes 21754 — and that is a real ZIP code: Ijamsville, MD, 232 miles away.
  • 👥 63 other ZIP codes are made of exactly the same digits (12457, 12475, 12547, 12574, 12745, 12754, …). The farthest-flung twin is 75241 in Dallas, TX, 961 miles away.
  • 🧭 Farther north than 52% of all ZIP codes, and farther east than 68%.
  • 🎯899 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 45712 and you would come out at 39.40°S, 98.34°E — 1,107 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.
🌙 The sky over 45712 today
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Source: USGS.

Business and tax activity

Business establishments5This ZIP5
Employees34This ZIP34
Annual payroll$1,264,000This ZIP$1,264,000

Land area

ZIP codes near 45712

ZIPCityDistance
45784 Vincent, OH 1.0 mi
45729 Fleming, OH 3.5 mi
45787 Watertown, OH 4.9 mi
45714 Belpre, OH 6.3 mi
45786 Waterford, OH 7.2 mi
45724 Cutler, OH 7.3 mi
45713 Bartlett, OH 8.2 mi
45742 Little Hocking, OH 8.5 mi
26105 Vienna, WV 9.3 mi
43787 Stockport, OH 11.3 mi

Find every ZIP code within 10 miles of 45712 →

Questions about this ZIP code

Where is ZIP code 45712?

45712 is in Barlow, Ohio, in Washington County, part of the Marietta, OH micropolitan area. Its published point location is 39.3987, -81.6649.

What county is 45712 in?

45712 lies in Washington County.

What area code is 45712?

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

What time zone is 45712 in?

45712 uses America/New_York.

What ZIP codes are near 45712?

The closest are 45784 (1 mi), 45729 (3.5 mi), 45787 (4.9 mi), 45714 (6.3 mi) and 45786 (7.2 mi).

Is 45712 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “45712 ZIP Code — Barlow, Ohio (Washington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45712

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/45712.json

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