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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/01545

01545

ZIP 01545 is in Shrewsbury, Massachusetts, in Worcester County; area codes 774 and 508; Eastern time. Shrewsbury has 2 ZIP codes; the other is 01546.

Type
Standard
Time zone
America/New_York
County
Worcester
Metro area
Worcester, MA
Population
38,876
Coordinates
42.2848, -71.7142
☼ Live from 01545 — Shrewsbury, MA

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Local time: —

Where 01545 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 01545
  • 🔢 Type 01545 into a pocket calculator and turn it upside down: ShSIO — not quite a word, sorry.
  • ➕ As a number, 1,545 = 3 × 5 × 103. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000001001
  • 🏠 Its numerical neighbours: 01543 (Rutland, MA, 15 mi away) and 01546 (Shrewsbury, MA, 11 mi away).
  • 🔄 Backwards, 01545 becomes 54510, which is not a ZIP code at all.
  • 👥 37 other ZIP codes are made of exactly the same digits (04551, 05154, 05451, 10455, 10545, 14055, …). The farthest-flung twin is 51054 in Sergeant Bluff, IA, 1,253 miles away.
  • 🧭 Farther north than 77% of all ZIP codes, and farther east than 95%.
  • 🎯1,404 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01545 and you would come out at 42.28°S, 108.29°E — 826 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 17m of daylight. Shortest: 9h 05m.
  • 📏 At 20.8 square miles of land, 01545 is bigger than 38% of ZIP codes — room for about 16 Central Parks.
🌙 The sky over 01545 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population38,876This ZIP38,876
Households14,708This ZIP14,708
Housing units15,393This ZIP15,393
Median age40.6This ZIP40.6Massachusetts40.0US 38.9
Median household income$139,302This ZIP$139,302Massachusetts$103,960US $80,734
Median home value$592,300This ZIP$592,300Massachusetts$562,100US $332,700
Median gross rent$2,116This ZIP$2,116Massachusetts$1,762US $1,413
Bachelor's degree or higher65.6%This ZIP65.6%
Mean commute30.9 minThis ZIP30.9 min
Population density1,872.5 / sq miThis ZIP1,872.5 / sq mi

Business and tax activity

Business establishments878This ZIP878
Employees14,886This ZIP14,886
Annual payroll$797,805,000This ZIP$797,805,000
Tax returns filed19,060This ZIP19,060
Total adjusted gross income$2,950,206,000This ZIP$2,950,206,000

Land area

Land area20.76 sq miThis ZIP20.76 sq mi
Water area1.06 sq miThis ZIP1.06 sq mi

Other place names in 01545

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

ZIP codes near 01545

ZIPCityDistance
01604 Worcester, MA 3.5 mi
01605 Worcester, MA 3.8 mi
01536 North Grafton, MA 3.9 mi
01532 Northborough, MA 4.4 mi
01613 Worcester, MA 4.5 mi
01606 Worcester, MA 4.6 mi
01608 Worcester, MA 4.7 mi
01601 Worcester, MA 4.8 mi
01614 Worcester, MA 4.8 mi
01615 Worcester, MA 4.8 mi

Find every ZIP code within 10 miles of 01545 →

Questions about this ZIP code

Where is ZIP code 01545?

01545 is in Shrewsbury, Massachusetts, in Worcester County, part of the Worcester, MA metropolitan area. Its published point location is 42.2848, -71.7142.

What county is 01545 in?

01545 lies in Worcester County.

What area code is 01545?

Shrewsbury uses area codes 774 and 508, from NANPA's telephone records.

What time zone is 01545 in?

01545 uses America/New_York.

How many people live in 01545?

About 38,876 people live in ZIP code 01545, in 14,708 households, at 1,872.5 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 01545?

$139,302 a year, against $103,960 across Massachusetts.

What ZIP codes are near 01545?

The closest are 01604 (3.5 mi), 01605 (3.8 mi), 01536 (3.9 mi), 01532 (4.4 mi) and 01613 (4.5 mi).

Is 01545 a PO Box ZIP code?

01545 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “01545 ZIP Code — Shrewsbury, Massachusetts (Worcester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01545

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