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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/43037

43037

ZIP 43037 is Martinsburg, Ohio, in Knox County; area code 740; Eastern time.

Type
Standard
Time zone
America/New_York
County
Knox
Metro area
Mount Vernon, OH
Population
293
Coordinates
40.2844, -82.3232
☼ Live from 43037 — Martinsburg, OH

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Where 43037 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 43037
  • 🔢 Type 43037 into a pocket calculator and turn it upside down: LEOEh — not quite a word, sorry.
  • ➕ 43037 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1010100000011101
  • 🏠 Its numerical neighbours: 43036 (Magnetic Springs, OH, 50 mi away) and 43040 (Marysville, OH, 55 mi away).
  • 🔄 Backwards, 43037 becomes 73034 — and that is a real ZIP code: Edmond, OK, 880 miles away.
  • 👥 30 other ZIP codes are made of exactly the same digits (03743, 04733, 30374, 30473, 30734, 33074, …). The farthest-flung twin is 34037 in APO AA, a military post office, 2,265 miles away.
  • 🧭 Farther north than 59% of all ZIP codes, and farther east than 65%.
  • 🎯859 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 43037 and you would come out at 40.28°S, 97.68°E — 1,164 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 03m of daylight. Shortest: 9h 18m.
  • 📏 At 3.2 square miles of land, 43037 is bigger than 15% of ZIP codes — room for about 2.5 Central Parks.
🌙 The sky over 43037 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population293This ZIP293
Households123This ZIP123
Housing units133This ZIP133
Median age61.2This ZIP61.2Ohio39.7US 38.9
Median household income$69,625This ZIP$69,625Ohio$71,389US $80,734
Median home value$273,400This ZIP$273,400Ohio$214,800US $332,700
Median gross rent$846This ZIP$846Ohio$1,034US $1,413
Bachelor's degree or higher10.2%This ZIP10.2%
Mean commute23.5 minThis ZIP23.5 min
Population density90.4 / sq miThis ZIP90.4 / sq mi

Business and tax activity

Business establishments9This ZIP9
Employees64This ZIP64
Annual payroll$2,074,000This ZIP$2,074,000
Tax returns filed170This ZIP170
Total adjusted gross income$8,995,000This ZIP$8,995,000

Land area

Land area3.24 sq miThis ZIP3.24 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Other place names in 43037

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

ZIP codes near 43037

ZIPCityDistance
43005 Bladensburg, OH 2.9 mi
43022 Gambier, OH 4.3 mi
43080 Utica, OH 6.4 mi
43071 Saint Louisville, OH 7.4 mi
43028 Howard, OH 8.2 mi
43843 Walhonding, OH 9.0 mi
43027 Homer, OH 10.7 mi
43050 Mount Vernon, OH 10.9 mi
43822 Frazeysburg, OH 11.2 mi
43055 Newark, OH 12.4 mi

Find every ZIP code within 10 miles of 43037 →

Questions about this ZIP code

Where is ZIP code 43037?

43037 is in Martinsburg, Ohio, in Knox County, part of the Mount Vernon, OH micropolitan area. Its published point location is 40.2844, -82.3232.

What county is 43037 in?

43037 lies in Knox County.

What area code is 43037?

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

What time zone is 43037 in?

43037 uses America/New_York.

How many people live in 43037?

About 293 people live in ZIP code 43037, in 123 households, at 90.4 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 43037?

$69,625 a year, against $71,389 across Ohio.

What ZIP codes are near 43037?

The closest are 43005 (2.9 mi), 43022 (4.3 mi), 43080 (6.4 mi), 43071 (7.4 mi) and 43028 (8.2 mi).

Is 43037 a PO Box ZIP code?

43037 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “43037 ZIP Code — Martinsburg, Ohio (Knox County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/43037

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