Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/45787

45787

ZIP 45787 is Watertown, Ohio, in Washington County; area code 740; Eastern time.

Type
No street area
Time zone
America/New_York
County
Washington
Metro area
Marietta, OH
Coordinates
39.4659, -81.6332

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 45786, whose figures describe that area — not this ZIP code.

☼ Live from 45787 — Watertown, OH

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Where 45787 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 45787
  • 🔢 Type 45787 into a pocket calculator and turn it upside down: LBLSh — not quite a word, sorry.
  • ➕ As a number, 45,787 = 7 × 31 × 211. Its digits add up to 31, a total 799 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011001011011011
  • 🏠 Its numerical neighbours: 45786 (Waterford, OH, 3 mi away) and 45788 (Whipple, OH, 14 mi away).
  • 🔄 Backwards, 45787 becomes 78754 — and that is a real ZIP code: Austin, TX, 1,101 miles away.
  • 👥 29 other ZIP codes are made of exactly the same digits (45778, 45877, 47578, 47857, 47875, 48757, …). The farthest-flung twin is 84757 in New Harmony, UT, 1,708 miles away.
  • 🧭 Farther north than 52% of all ZIP codes, and farther east than 68%.
  • 🎯901 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 45787 and you would come out at 39.47°S, 98.37°E — 1,108 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 45787 today
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Source: USGS.

Land area

ZIP codes near 45787

ZIPCityDistance
45786 Waterford, OH 2.8 mi
45729 Fleming, OH 3.6 mi
45712 Barlow, OH 4.9 mi
45784 Vincent, OH 5.9 mi
45721 Coal Run, OH 7.4 mi
45744 Lowell, OH 9.4 mi
43787 Stockport, OH 9.8 mi
45715 Beverly, OH 10.0 mi
45713 Bartlett, OH 10.3 mi
45714 Belpre, OH 10.3 mi

Find every ZIP code within 10 miles of 45787 →

Questions about this ZIP code

Where is ZIP code 45787?

45787 is in Watertown, Ohio, in Washington County, part of the Marietta, OH micropolitan area. Its published point location is 39.4659, -81.6332.

What county is 45787 in?

45787 lies in Washington County.

What area code is 45787?

Watertown uses area code 740, from NANPA's telephone records.

What time zone is 45787 in?

45787 uses America/New_York.

What ZIP codes are near 45787?

The closest are 45786 (2.8 mi), 45729 (3.6 mi), 45712 (4.9 mi), 45784 (5.9 mi) and 45721 (7.4 mi).

Is 45787 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. “45787 ZIP Code — Watertown, Ohio (Washington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45787

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curl https://zipcodes.pro/zip/45787.json

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