01606 ZIP Code, Worcester, MA
01606 is a ZIP code in Worcester, Massachusetts in Worcester County. It covers 6.0 square miles of land. The closest ZIP codes are 01605, 01609 and 01520. 22,844 people live here in 9,192 households. At about 3,815 people per square mile it has suburban density, and owners and renters are mixed (68% own). Median household income is $92,105, below the Massachusetts median of $103,960.
Quick facts
- Mailing city: Worcester, MA
- County: Worcester County
- Land area: 6.0 sq mi
- Population: 22,844
- Median household income: $92,105
- Carrier routes: 21 (8,831 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 22,844 |
| Households | 9,192 |
| Median household income | $92,105 |
| Income per person | $46,282 |
| Median age | 39.2 |
| Homeowners | 67.8% |
| Median home value | $370,800 |
| Median rent | $1,584 |
| Bachelor's degree or higher | 44.5% |
| Average commute (minutes) | 24.9 |
| Households with kids under 18 | 27.4% |
| Moved in the past year | 10.6% |
| Below the poverty line | 9.2% |
| Broadband internet | 93.5% |
| Speak a non-English language at home | 28.2% |
Household income
| % of households | Value |
|---|---|
| <$10K | 5.6% |
| $10–15K | 3.5% |
| $15–25K | 4.9% |
| $25–35K | 3.8% |
| $35–50K | 8.4% |
| $50–75K | 12.8% |
| $75–100K | 14.1% |
| $100–150K | 20.4% |
| $150–200K | 12.4% |
| $200K+ | 14.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 10.4% |
| 10–19 | 10.4% |
| 20–24 | 5.1% |
| 25–34 | 17.7% |
| 35–44 | 12.4% |
| 45–54 | 13.9% |
| 55–64 | 14.7% |
| 65–74 | 9.7% |
| 75+ | 5.5% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 44.7% |
| Owned outright | 20.8% |
| Rented | 30.6% |
| Vacant | 3.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 55.8% |
| Townhome | 9.0% |
| 2–4 units | 20.2% |
| 5–19 units | 6.1% |
| 20+ units | 7.2% |
| Mobile / other | 1.8% |
Businesses in 01606
456 business establishments with 9,380 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 72
- Retail Trade: 62
- Other Services (except Public Administration): 52
- Professional, Scientific, and Technical Services: 39
- Construction: 38
- Accommodation and Food Services: 36
- Administrative and Support and Waste Management and Remediation Services: 29
- Finance and Insurance: 22
EDDM carrier routes
01606 has 21 USPS carrier routes with 8,831 residential and 531 business mailboxes. Open the EDDM route map.
Carrier routes in 01606
01606 has 21 USPS carrier routes (21 city (C)) with 8,831 residential and 531 business mailboxes. Routes range from 221 homes (C009) to 681 homes (C002); the median route has 418 homes. The Census counted 9,192 households in 01606 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 15 |
| 500–749 | 5 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 01606 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C021 — USPS business mailboxes 115, 311 homes
- Route C025 — USPS business mailboxes 89, 337 homes
- Route C009 — USPS business mailboxes 80, 221 homes
- Route C020 — USPS business mailboxes 59, 524 homes
- Route C022 — USPS business mailboxes 44, 418 homes
Select these 5 routes on the route map
Every carrier route in 01606
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 461 | 14 | $71,499 | — | — | — |
| C002 | City | 681 | 19 | $14,895 | — | — | — |
| C003 | City | 418 | 29 | $61,015 | — | — | — |
| C004 | City | 517 | 2 | $78,377 | — | — | — |
| C005 | City | 438 | 0 | $102,276 | — | — | — |
| C006 | City | 374 | 0 | $98,945 | — | — | — |
| C007 | City | 325 | 4 | $102,276 | — | — | — |
| C009 | City | 221 | 80 | $64,428 | — | — | — |
| C010 | City | 359 | 1 | $98,678 | — | — | — |
| C012 | City | 446 | 1 | $64,428 | — | — | — |
| C013 | City | 399 | 2 | $85,264 | — | — | — |
| C014 | City | 514 | 17 | $85,264 | — | — | — |
| C015 | City | 448 | 3 | $46,036 | — | — | — |
| C018 | City | 294 | 3 | $71,499 | — | — | — |
| C019 | City | 501 | 18 | $98,945 | — | — | — |
| C020 | City | 524 | 59 | $98,055 | — | — | — |
| C021 | City | 311 | 115 | $67,330 | — | — | — |
| C022 | City | 418 | 44 | $115,468 | — | — | — |
| C023 | City | 492 | 31 | $98,945 | — | — | — |
| C025 | City | 337 | 89 | $98,678 | — | — | — |
| C026 | City | 353 | 0 | $78,377 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 01606 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
- 01605 — Worcester city, MA (1.7 mi)
- 01609 — Worcester city, MA (2.7 mi)
- 01520 (3.4 mi)
- 01608 — Worcester city, MA (3.6 mi)
- 01602 — Worcester city, MA (4.2 mi)
- 01583 — Worcester city, MA (4.3 mi)
- 01604 — Worcester city, MA (4.4 mi)
- 01545 — Worcester city, MA (4.6 mi)
Areas that include 01606
- Worcester, MA ZIP codes — 9 ZIP codes
- Worcester County ZIP codes — 86 ZIP codes
- Massachusetts ZIP code data
Where it ranks
- No. 17 of 78: lowest median age in Worcester County
- No. 7 of 78: fastest population growth in Worcester County
- No. 1 of 9: highest median household income in Worcester, MA
- No. 5 of 9: highest median home value in Worcester, MA
- No. 1 of 9: highest share of owner-occupied homes in Worcester, MA
- No. 2 of 9: highest median age in Worcester, MA
- No. 3 of 9: fastest population growth in Worcester, MA
Mail every home in 01606
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) 01606, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 01606 in?
- 01606 is a Worcester, MA mailing address. By land area, 94% lies inside Worcester; the rest is outside any Census-defined city or community.
- What county is 01606 in?
- 01606 is in Worcester County.
- What is the population of 01606?
- About 22,844 people (±1,351), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 21,651.
- What is the median household income in 01606?
- $92,105 (±$9,019), 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 01606?
- 21 USPS carrier routes with 8,831 residential and 531 business mailboxes (9,360 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 01606?
- The closest, measured center to center: 01605 (1.7 mi, Worcester), 01609 (2.7 mi, Worcester), 01520 (3.4 mi), 01608 (3.6 mi, Worcester), 01602 (4.2 mi, Worcester) and 01583 (4.3 mi, Worcester).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.