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Where 02109 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 02109 into a pocket calculator and turn it upside down: GOIZO — not quite a word, sorry.
- ➕ As a number, 2,109 = 3 × 19 × 37. Its digits add up to 12, a total 940 other ZIP codes share.
- 💾In binary, the way a computer stores it:
100000111101 - 🏠 Its numerical neighbours: 02108 (Boston, MA, 1 mi away) and 02110 (Boston, MA, 1 mi away).
- 🔄 Backwards, 02109 becomes 90120, which is not a ZIP code at all.
- 👥 34 other ZIP codes are made of exactly the same digits (00912, 00921, 01029, 01092, 01902, 02019, …). The farthest-flung twin is 09102 in APO AE, a military post office, 3,684 miles away.
- 🧭 Farther north than 78% of all ZIP codes, and farther east than 96%.
- 🎯1,438 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 02109 and you would come out at 42.37°S, 108.95°E — 813 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 17m of daylight. Shortest: 9h 04m.
- 📏 At 0.170 square miles of land, 02109 is bigger than 2% of ZIP codes — about 82 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 3,612This ZIP3,612 |
|---|---|
| Households | 2,085This ZIP2,085 |
| Housing units | 2,632This ZIP2,632 |
| Median age | 33.5This ZIP33.5Massachusetts40.0US 38.9 |
| Median household income | $158,843This ZIP$158,843Massachusetts$103,960US $80,734 |
| Median home value | $958,000This ZIP$958,000Massachusetts$562,100US $332,700 |
| Median gross rent | $3,500+This ZIP$3,500+Massachusetts$1,762US $1,413 |
| Bachelor's degree or higher | 85.7%This ZIP85.7% |
| Mean commute | 22.4 minThis ZIP22.4 min |
| Population density | 21,247.1 / sq miThis ZIP21,247.1 / sq mi |
Business and tax activity
| Business establishments | 1,309This ZIP1,309 |
|---|---|
| Employees | 49,551This ZIP49,551 |
| Annual payroll | $6,938,769,000This ZIP$6,938,769,000 |
| Tax returns filed | 2,630This ZIP2,630 |
| Total adjusted gross income | $1,189,216,000This ZIP$1,189,216,000 |
Land area
| Land area | 0.17 sq miThis ZIP0.17 sq mi |
|---|---|
| Water area | 0.11 sq miThis ZIP0.11 sq mi |
Other place names in 02109
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 02109
| ZIP | City | Distance |
|---|---|---|
02113 | Boston, MA | 0.3 mi |
02203 | Boston, MA | 0.6 mi |
02110 | Boston, MA | 0.6 mi |
02222 | Boston, MA | 0.7 mi |
02117 | Boston, MA | 0.7 mi |
02112 | Boston, MA | 0.8 mi |
02196 | Boston, MA | 0.8 mi |
02201 | Boston, MA | 0.8 mi |
02211 | Boston, MA | 0.8 mi |
02212 | Boston, MA | 0.8 mi |
Find every ZIP code within 10 miles of 02109 →
Questions about this ZIP code
Where is ZIP code 02109?
02109 is in Boston, Massachusetts, in Suffolk County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.3669, -71.0504.
What county is 02109 in?
02109 lies in Suffolk County.
What area code is 02109?
Boston uses area codes 617 and 857, from NANPA's telephone records.
What time zone is 02109 in?
02109 uses America/New_York.
How many people live in 02109?
About 3,612 people live in ZIP code 02109, in 2,085 households, at 21,247.1 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 02109?
$158,843 a year, against $103,960 across Massachusetts.
What ZIP codes are near 02109?
The closest are 02113 (0.3 mi), 02203 (0.6 mi), 02110 (0.6 mi), 02222 (0.7 mi) and 02117 (0.7 mi).
Is 02109 a PO Box ZIP code?
02109 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “02109 ZIP Code — Boston, Massachusetts (Suffolk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/02109
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/02109.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.