01561
ZIP 01561 is South Lancaster, Massachusetts, in Worcester County; area codes 978 and 351; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Worcester
- Metro area
- Worcester, MA
- Population
- 0
- Coordinates
- 42.4458, -71.6885
Weather right now
Asking the National Weather Service…
Where 01561 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.
- 🔢 Type 01561 into a pocket calculator and turn it upside down: IgSIO — not quite a word, sorry.
- ➕ As a number, 1,561 = 7 × 223. Its digits add up to 13, a total 1,179 other ZIP codes share.
- 💾In binary, the way a computer stores it:
11000011001 - 🏠 Its numerical neighbours: 01560 (South Grafton, MA, 19 mi away) and 01562 (Spencer, MA, 21 mi away).
- 🔄 Backwards, 01561 becomes 16510 — and that is a real ZIP code: Erie, PA, 423 miles away.
- 👥 39 other ZIP codes are made of exactly the same digits (01516, 01615, 05161, 06115, 06151, 06511, …). The farthest-flung twin is 51106 in Sioux City, IA, 1,251 miles away.
- 🧭 Farther north than 79% of all ZIP codes, and farther east than 95%.
- 🎯1,405 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 01561 and you would come out at 42.45°S, 108.31°E — 835 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 18m of daylight. Shortest: 9h 04m.
- 📏 At 0.038 square miles of land, 01561 is bigger than 0% of ZIP codes — about 18 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 0 |
|---|---|
| Households | 0 |
| Housing units | 50This ZIP50 |
| Population density | 0.0 / sq mi |
Business and tax activity
| Business establishments | 13This ZIP13 |
|---|---|
| Employees | 351This ZIP351 |
| Annual payroll | $16,823,000This ZIP$16,823,000 |
Land area
| Land area | 0.04 sq miThis ZIP0.04 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 01561
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 01561
| ZIP | City | Distance |
|---|---|---|
01510 | Clinton, MA | 2.3 mi |
01523 | Lancaster, MA | 2.7 mi |
01740 | Bolton, MA | 4.4 mi |
01564 | Sterling, MA | 4.5 mi |
01467 | Still River, MA | 4.8 mi |
01503 | Berlin, MA | 5.0 mi |
01453 | Leominster, MA | 6.4 mi |
01505 | Boylston, MA | 6.4 mi |
01434 | Devens, MA | 7.1 mi |
01583 | West Boylston, MA | 7.1 mi |
Find every ZIP code within 10 miles of 01561 →
Questions about this ZIP code
Where is ZIP code 01561?
01561 is in South Lancaster, Massachusetts, in Worcester County, part of the Worcester, MA metropolitan area. Its published point location is 42.4458, -71.6885.
What county is 01561 in?
01561 lies in Worcester County.
What area code is 01561?
South Lancaster uses area codes 978 and 351, from NANPA's telephone records.
What time zone is 01561 in?
01561 uses America/New_York.
How many people live in 01561?
About 0 people live in ZIP code 01561. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 01561?
The closest are 01510 (2.3 mi), 01523 (2.7 mi), 01740 (4.4 mi), 01564 (4.5 mi) and 01467 (4.8 mi).
Is 01561 a PO Box ZIP code?
01561 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “01561 ZIP Code — South Lancaster, Massachusetts (Worcester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01561
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/01561.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.