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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/45631

45631

ZIP 45631 is Gallipolis, Ohio, in Gallia County; area code 740; Eastern time.

Type
Standard
Time zone
America/New_York
County
Gallia
Metro area
Gallipolis, OH
Population
13,386
Coordinates
38.8218, -82.2643
☼ Live from 45631 — Gallipolis, OH

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Where 45631 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 45631
  • 🔢 Type 45631 into a pocket calculator and turn it upside down: IEgSh — not quite a word, sorry.
  • ➕ 45631 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011001000111111
  • 🏠 Its numerical neighbours: 45630 (Friendship, OH, 45 mi away) and 45633 (Hallsville, OH, 51 mi away).
  • 🔄 Backwards, 45631 becomes 13654 — and that is a real ZIP code: Heuvelton, NY, 529 miles away.
  • 👥 60 other ZIP codes are made of exactly the same digits (13456, 13465, 13645, 13654, 14536, 14563, …). The farthest-flung twin is 56341 in Holmes City, MN, 832 miles away.
  • 🧭 Farther south than 53% of all ZIP codes, and farther east than 66%.
  • 🎯874 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 45631 and you would come out at 38.82°S, 97.74°E — 1,123 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 53m of daylight. Shortest: 9h 27m.
  • 📏 At 114.6 square miles of land, 45631 is bigger than 81% of ZIP codes — room for about 87 Central Parks.
🌙 The sky over 45631 today
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🌋 Shake report
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Source: USGS.

People and housing

Population13,386This ZIP13,386
Households5,848This ZIP5,848
Housing units6,559This ZIP6,559
Median age44.3This ZIP44.3Ohio39.7US 38.9
Median household income$56,835This ZIP$56,835Ohio$71,389US $80,734
Median home value$156,200This ZIP$156,200Ohio$214,800US $332,700
Median gross rent$846This ZIP$846Ohio$1,034US $1,413
Bachelor's degree or higher23.1%This ZIP23.1%
Mean commute22.7 minThis ZIP22.7 min
Population density116.8 / sq miThis ZIP116.8 / sq mi

Business and tax activity

Business establishments425This ZIP425
Employees7,232This ZIP7,232
Annual payroll$309,102,000This ZIP$309,102,000
Tax returns filed6,040This ZIP6,040
Total adjusted gross income$372,833,000This ZIP$372,833,000

Land area

Land area114.59 sq miThis ZIP114.59 sq mi
Water area1.80 sq miThis ZIP1.80 sq mi

Other place names in 45631

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

ZIP codes near 45631

ZIPCityDistance
45643 Kerr, OH 3.2 mi
45674 Rio Grande, OH 7.4 mi
45614 Bidwell, OH 7.5 mi
25515 Gallipolis Ferry, WV 7.8 mi
45658 Patriot, OH 8.9 mi
25106 Henderson, WV 10.4 mi
25550 Point Pleasant, WV 11.0 mi
45620 Cheshire, OH 11.2 mi
45623 Crown City, OH 12.4 mi
45685 Thurman, OH 12.8 mi

Find every ZIP code within 10 miles of 45631 →

Questions about this ZIP code

Where is ZIP code 45631?

45631 is in Gallipolis, Ohio, in Gallia County, part of the Gallipolis, OH micropolitan area. Its published point location is 38.8218, -82.2643.

What county is 45631 in?

45631 lies in Gallia County.

What area code is 45631?

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

What time zone is 45631 in?

45631 uses America/New_York.

How many people live in 45631?

About 13,386 people live in ZIP code 45631, in 5,848 households, at 116.8 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 45631?

$56,835 a year, against $71,389 across Ohio.

What ZIP codes are near 45631?

The closest are 45643 (3.2 mi), 45674 (7.4 mi), 45614 (7.5 mi), 25515 (7.8 mi) and 45658 (8.9 mi).

Is 45631 a PO Box ZIP code?

45631 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “45631 ZIP Code — Gallipolis, Ohio (Gallia County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45631

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