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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/45172

45172

ZIP 45172 is Sinking Spring, Ohio, in Highland County; area code 937; Eastern time.

Type
Standard
Time zone
America/New_York
County
Highland
Metro area
none
Population
308
Coordinates
39.0745, -83.3869
☼ Live from 45172 — Sinking Spring, OH

Weather right now

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Local time: —

Where 45172 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 45172
  • 🔢 Type 45172 into a pocket calculator and turn it upside down: ZLISh — not quite a word, sorry.
  • ➕ As a number, 45,172 = 2 × 2 × 23 × 491. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1011000001110100
  • 🏠 Its numerical neighbours: 45171 (Sardinia, OH, 22 mi away) and 45174 (Terrace Park, OH, 50 mi away).
  • 🔄 Backwards, 45172 becomes 27154, which is not a ZIP code at all.
  • 👥 63 other ZIP codes are made of exactly the same digits (12457, 12475, 12547, 12574, 12745, 12754, …). The farthest-flung twin is 57421 in Amherst, SD, 871 miles away.
  • 🧭 Farther south than 50% of all ZIP codes, and farther east than 62%.
  • 🎯811 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 45172 and you would come out at 39.07°S, 96.61°E — 1,186 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 55m of daylight. Shortest: 9h 25m.
  • 📏 At 0.441 square miles of land, 45172 is bigger than 5% of ZIP codes — about 213 football fields.
🌙 The sky over 45172 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population308This ZIP308
Households95This ZIP95
Housing units95This ZIP95
Median age31.0This ZIP31.0Ohio39.7US 38.9
Median household income$107,951This ZIP$107,951Ohio$71,389US $80,734
Median home value$149,100This ZIP$149,100Ohio$214,800US $332,700
Bachelor's degree or higher1.2%This ZIP1.2%
Mean commute37.5 minThis ZIP37.5 min
Population density698.4 / sq miThis ZIP698.4 / sq mi

Business and tax activity

Business establishments3This ZIP3
Employees8This ZIP8
Annual payroll$335,000This ZIP$335,000

Land area

Land area0.44 sq miThis ZIP0.44 sq mi
Water area0.00 sq mi

Other place names in 45172

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

ZIP codes near 45172

ZIPCityDistance
45646 Latham, OH 3.4 mi
45660 Peebles, OH 6.2 mi
45624 Cynthiana, OH 7.1 mi
45671 Rarden, OH 10.4 mi
45612 Bainbridge, OH 10.8 mi
45133 Hillsboro, OH 11.5 mi
45679 Seaman, OH 11.9 mi
45661 Piketon, OH 15.1 mi
45681 South Salem, OH 17.0 mi
45657 Otway, OH 17.9 mi

Find every ZIP code within 10 miles of 45172 →

Questions about this ZIP code

Where is ZIP code 45172?

45172 is in Sinking Spring, Ohio, in Highland County. Its published point location is 39.0745, -83.3869.

What county is 45172 in?

45172 lies in Highland County.

What area code is 45172?

Sinking Spring uses area code 937, from NANPA's telephone records.

What time zone is 45172 in?

45172 uses America/New_York.

How many people live in 45172?

About 308 people live in ZIP code 45172, in 95 households, at 698.4 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 45172?

$107,951 a year, against $71,389 across Ohio.

What ZIP codes are near 45172?

The closest are 45646 (3.4 mi), 45660 (6.2 mi), 45624 (7.1 mi), 45671 (10.4 mi) and 45612 (10.8 mi).

Is 45172 a PO Box ZIP code?

45172 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “45172 ZIP Code — Sinking Spring, Ohio (Highland County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/45172

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