01550 ZIP Code, Southbridge, MA
01550 is a ZIP code in Southbridge, Massachusetts in Worcester County. It covers 20 square miles of land. The closest ZIP codes are 01566, 01571 and 06262. 17,928 people live here in 7,260 households. With about 886 people per square mile it is lightly settled, and owners and renters are mixed (43% own). Median household income is $66,287, well below the Massachusetts median of $103,960.
Quick facts
- Mailing city: Southbridge, MA
- County: Worcester County
- Land area: 20 sq mi
- Population: 17,928
- Median household income: $66,287
- Carrier routes: 13 (7,356 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 17,928 |
| Households | 7,260 |
| Median household income | $66,287 |
| Income per person | $35,249 |
| Median age | 40.9 |
| Homeowners | 42.7% |
| Median home value | $294,800 |
| Median rent | $1,256 |
| Bachelor's degree or higher | 19.4% |
| Average commute (minutes) | 28.3 |
| Households with kids under 18 | 32.1% |
| Moved in the past year | 9.4% |
| Below the poverty line | 15.3% |
| Broadband internet | 89.8% |
| Speak a non-English language at home | 34.7% |
Household income
| % of households | Value |
|---|---|
| <$10K | 6.9% |
| $10–15K | 2.9% |
| $15–25K | 8.2% |
| $25–35K | 11.8% |
| $35–50K | 11.2% |
| $50–75K | 14.5% |
| $75–100K | 12.7% |
| $100–150K | 17.2% |
| $150–200K | 9.4% |
| $200K+ | 5.2% |
Age
| % of all residents | Value |
|---|---|
| <10 | 10.9% |
| 10–19 | 14.1% |
| 20–24 | 7.6% |
| 25–34 | 11.8% |
| 35–44 | 11.3% |
| 45–54 | 13.8% |
| 55–64 | 16.2% |
| 65–74 | 8.8% |
| 75+ | 5.5% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 28.9% |
| Owned outright | 12.2% |
| Rented | 54.5% |
| Vacant | 4.4% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 38.1% |
| Townhome | 1.8% |
| 2–4 units | 39.3% |
| 5–19 units | 15.6% |
| 20+ units | 5.0% |
| Mobile / other | 0.1% |
Businesses in 01550
326 business establishments with 5,221 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 63
- Retail Trade: 48
- Accommodation and Food Services: 40
- Other Services (except Public Administration): 38
- Construction: 31
- Manufacturing: 22
- Administrative and Support and Waste Management and Remediation Services: 19
- Professional, Scientific, and Technical Services: 17
EDDM carrier routes
01550 has 13 USPS carrier routes with 7,356 residential and 404 business mailboxes. Open the EDDM route map.
Carrier routes in 01550
01550 has 13 USPS carrier routes (12 city (C), 1 rural (R)) with 7,356 residential and 404 business mailboxes. Routes range from 378 homes (C001) to 699 homes (C014); the median route has 562 homes. The Census counted 7,260 households in 01550 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 5 |
| 500–749 | 8 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 01550 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C003 — USPS business mailboxes 75, 690 homes
- Route C007 — USPS business mailboxes 52, 673 homes
- Route C012 — USPS business mailboxes 46, 681 homes
- Route C005 — USPS business mailboxes 44, 562 homes
- Route C014 — USPS business mailboxes 37, 699 homes
Select these 5 routes on the route map
Every carrier route in 01550
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 378 | 2 | $81,454 | — | — | — |
| C002 | City | 650 | 37 | $17,042 | — | — | — |
| C003 | City | 690 | 75 | $35,203 | — | — | — |
| C005 | City | 562 | 44 | $56,600 | — | — | — |
| C006 | City | 486 | 7 | $56,600 | — | — | — |
| C007 | City | 673 | 52 | $61,817 | — | — | — |
| C008 | City | 468 | 25 | $118,038 | — | — | — |
| C009 | City | 613 | 18 | $58,549 | — | — | — |
| C010 | City | 553 | 14 | $118,038 | — | — | — |
| C012 | City | 681 | 46 | $53,621 | — | — | — |
| C013 | City | 462 | 33 | $62,442 | — | — | — |
| C014 | City | 699 | 37 | $38,193 | — | — | — |
| R003 | Rural | 441 | 14 | $53,621 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 01550 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 01566 — Sturbridge CDP, MA (3.8 mi)
- 01571 (5.1 mi)
- 06262 — Quinebaug CDP, CT (5.2 mi)
- 01518 — Fiskdale CDP, MA (5.3 mi)
- 06281 — South Woodstock CDP, CT (6 mi)
- 01507 (6.1 mi)
- 01521 — Holland CDP, MA (7.6 mi)
- 06282 — Lake Bungee CDP, CT (8.1 mi)
Areas that include 01550
- Southbridge Town, MA ZIP codes — 1 ZIP code
- Southbridge, MA ZIP codes — 1 ZIP code
- Worcester County ZIP codes — 86 ZIP codes
- Massachusetts ZIP code data
Where it ranks
Mail every home in 01550
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 01550, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 01550 in?
- 01550 is a Southbridge, MA mailing address. By land area, 100% lies inside Southbridge Town.
- What county is 01550 in?
- 01550 is in Worcester County.
- What is the population of 01550?
- About 17,928 people (±32), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,740.
- What is the median household income in 01550?
- $66,287 (±$8,373), compared with $103,960 for Massachusetts as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 01550?
- 13 USPS carrier routes with 7,356 residential and 404 business mailboxes (7,760 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 01550?
- The closest, measured center to center: 01566 (3.8 mi, Sturbridge), 01571 (5.1 mi), 06262 (5.2 mi, Quinebaug), 01518 (5.3 mi, Fiskdale), 06281 (6 mi, South Woodstock) and 01507 (6.1 mi).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.