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Where 01604 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 01604 into a pocket calculator and turn it upside down: hOgIO — not quite a word, sorry.
- ➕ As a number, 1,604 = 2 × 2 × 401. Its digits add up to 11, a total 714 other ZIP codes share.
- 💾In binary, the way a computer stores it:
11001000100 - 🏠 Its numerical neighbours: 01603 (Worcester, MA, 4 mi away) and 01605 (Worcester, MA, 3 mi away).
- 🔄 Backwards, 01604 becomes 40610, which is not a ZIP code at all.
- 👥 28 other ZIP codes are made of exactly the same digits (00614, 00641, 01460, 04016, 04061, 04106, …). The farthest-flung twin is 00641 in Utuado, PR, 1,684 miles away.
- 🧭 Farther north than 77% of all ZIP codes, and farther east than 95%.
- 🎯1,401 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 01604 and you would come out at 42.25°S, 108.23°E — 826 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 16m of daylight. Shortest: 9h 05m.
- 📏 At 6.6 square miles of land, 01604 is bigger than 22% of ZIP codes — room for about 5.0 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 39,812This ZIP39,812 |
|---|---|
| Households | 16,853This ZIP16,853 |
| Housing units | 18,337This ZIP18,337 |
| Median age | 37.4This ZIP37.4Massachusetts40.0US 38.9 |
| Median household income | $73,505This ZIP$73,505Massachusetts$103,960US $80,734 |
| Median home value | $352,500This ZIP$352,500Massachusetts$562,100US $332,700 |
| Median gross rent | $1,584This ZIP$1,584Massachusetts$1,762US $1,413 |
| Bachelor's degree or higher | 32.8%This ZIP32.8% |
| Mean commute | 24.2 minThis ZIP24.2 min |
| Population density | 6,001.2 / sq miThis ZIP6,001.2 / sq mi |
Business and tax activity
| Business establishments | 744This ZIP744 |
|---|---|
| Employees | 12,170This ZIP12,170 |
| Annual payroll | $973,529,000This ZIP$973,529,000 |
| Tax returns filed | 18,870This ZIP18,870 |
| Total adjusted gross income | $1,136,989,000This ZIP$1,136,989,000 |
Land area
| Land area | 6.63 sq miThis ZIP6.63 sq mi |
|---|---|
| Water area | 0.17 sq miThis ZIP0.17 sq mi |
Other place names in 01604
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 01604
| ZIP | City | Distance |
|---|---|---|
01608 | Worcester, MA | 1.8 mi |
01601 | Worcester, MA | 1.9 mi |
01614 | Worcester, MA | 1.9 mi |
01615 | Worcester, MA | 1.9 mi |
01610 | Worcester, MA | 2.1 mi |
01607 | Worcester, MA | 2.2 mi |
01605 | Worcester, MA | 2.7 mi |
01613 | Worcester, MA | 3.3 mi |
01545 | Shrewsbury, MA | 3.5 mi |
01609 | Worcester, MA | 3.9 mi |
Find every ZIP code within 10 miles of 01604 →
Questions about this ZIP code
Where is ZIP code 01604?
01604 is in Worcester, Massachusetts, in Worcester County, part of the Worcester, MA metropolitan area. Its published point location is 42.2535, -71.7679.
What county is 01604 in?
01604 lies in Worcester County.
What area code is 01604?
Worcester uses area codes 508 and 774, from NANPA's telephone records.
What time zone is 01604 in?
01604 uses America/New_York.
How many people live in 01604?
About 39,812 people live in ZIP code 01604, in 16,853 households, at 6,001.2 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 01604?
$73,505 a year, against $103,960 across Massachusetts.
What ZIP codes are near 01604?
The closest are 01608 (1.8 mi), 01601 (1.9 mi), 01614 (1.9 mi), 01615 (1.9 mi) and 01610 (2.1 mi).
Is 01604 a PO Box ZIP code?
01604 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “01604 ZIP Code — Worcester, Massachusetts (Worcester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01604
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/01604.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.