01803 ZIP Code, Burlington, MA
01803 is a ZIP code in Burlington, Massachusetts in Middlesex County. It covers 11 square miles of land. The closest ZIP codes are 01801, 02420 and 01730. 26,274 people live here in 9,974 households. At about 2,331 people per square mile it has suburban density, and most homes are owner-occupied (74%). Median household income is $146,436, above the Massachusetts median of $103,960; the median age is 45.9, older than most ZIP codes.
Quick facts
- Mailing city: Burlington, MA
- County: Middlesex County
- Land area: 11 sq mi
- Population: 26,274
- Median household income: $146,436
- Carrier routes: 22 (10,456 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 26,274 |
| Households | 9,974 |
| Median household income | $146,436 |
| Income per person | $69,012 |
| Median age | 45.9 |
| Homeowners | 74.2% |
| Median home value | $740,600 |
| Median rent | $2,718 |
| Bachelor's degree or higher | 58.4% |
| Average commute (minutes) | 27.5 |
| Households with kids under 18 | 27.1% |
| Moved in the past year | 9.2% |
| Below the poverty line | 5.9% |
| Broadband internet | 97.3% |
| Speak a non-English language at home | 21.0% |
Household income
| % of households | Value |
|---|---|
| <$10K | 1.2% |
| $10–15K | 2.5% |
| $15–25K | 3.7% |
| $25–35K | 1.3% |
| $35–50K | 6.2% |
| $50–75K | 10.7% |
| $75–100K | 8.7% |
| $100–150K | 16.5% |
| $150–200K | 17.5% |
| $200K+ | 31.7% |
Age
| % of all residents | Value |
|---|---|
| <10 | 9.8% |
| 10–19 | 9.4% |
| 20–24 | 5.9% |
| 25–34 | 11.9% |
| 35–44 | 11.9% |
| 45–54 | 14.0% |
| 55–64 | 15.2% |
| 65–74 | 11.0% |
| 75+ | 10.9% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 45.2% |
| Owned outright | 27.2% |
| Rented | 24.0% |
| Vacant | 3.7% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 70.5% |
| Townhome | 3.4% |
| 2–4 units | 3.6% |
| 5–19 units | 7.1% |
| 20+ units | 15.4% |
| Mobile / other | 0.0% |
Businesses in 01803
1,480 business establishments with 40,471 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 241
- Retail Trade: 233
- Accommodation and Food Services: 136
- Other Services (except Public Administration): 121
- Health Care and Social Assistance: 117
- Finance and Insurance: 114
- Construction: 106
- Information: 95
EDDM carrier routes
01803 has 22 USPS carrier routes with 10,456 residential and 1,158 business mailboxes. Open the EDDM route map.
Carrier routes in 01803
01803 has 22 USPS carrier routes (22 city (C)) with 10,456 residential and 1,158 business mailboxes. Routes range from 111 homes (C023) to 977 homes (C001); the median route has 455 homes. The Census counted 9,974 households in 01803 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 2 |
| 250–499 | 13 |
| 500–749 | 5 |
| 750–999 | 2 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 01803 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C023 — USPS business mailboxes 322, 111 homes
- Route C031 — USPS business mailboxes 191, 265 homes
- Route C015 — USPS business mailboxes 131, 344 homes
- Route C035 — USPS business mailboxes 116, 196 homes
- Route C012 — USPS business mailboxes 96, 314 homes
Select these 5 routes on the route map
Every carrier route in 01803
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 977 | 19 | $157,973 | — | — | — |
| C002 | City | 939 | 56 | $140,104 | — | — | — |
| C004 | City | 432 | 11 | $200,001+ | — | — | — |
| C007 | City | 455 | 6 | $140,104 | — | — | — |
| C009 | City | 555 | 33 | $154,932 | — | — | — |
| C010 | City | 511 | 1 | $198,801 | — | — | — |
| C011 | City | 482 | 0 | $157,973 | — | — | — |
| C012 | City | 314 | 96 | $140,104 | — | — | — |
| C014 | City | 423 | 11 | $198,801 | — | — | — |
| C015 | City | 344 | 131 | $152,516 | — | — | — |
| C016 | City | 471 | 43 | $110,477 | — | — | — |
| C017 | City | 420 | 52 | $152,516 | — | — | — |
| C023 | City | 111 | 322 | $140,104 | — | — | — |
| C024 | City | 466 | 14 | $200,001+ | — | — | — |
| C025 | City | 376 | 17 | $198,801 | — | — | — |
| C026 | City | 455 | 0 | $154,932 | — | — | — |
| C027 | City | 420 | 0 | $154,932 | — | — | — |
| C029 | City | 683 | 1 | $69,404 | — | — | — |
| C030 | City | 604 | 4 | $136,702 | — | — | — |
| C031 | City | 265 | 191 | $152,516 | — | — | — |
| C034 | City | 557 | 34 | $140,104 | — | — | — |
| C035 | City | 196 | 116 | $152,516 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 01803 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
- 01801 — Woburn city, MA (2.6 mi)
- 02420 — Lexington CDP, MA (3.2 mi)
- 01730 — Burlington CDP, MA (4.1 mi)
- 01821 — Pinehurst CDP, MA (4.1 mi)
- 01887 — Wilmington CDP, MA (4.6 mi)
- 01890 — Winchester CDP, MA (4.6 mi)
- 02421 — Lexington CDP, MA (4.9 mi)
- 01731 — Hanscom AFB CDP, MA (5 mi)
Areas that include 01803
- Burlington, MA ZIP codes — 1 ZIP code
- Middlesex County ZIP codes — 83 ZIP codes
- Massachusetts ZIP code data
Where it ranks
Mail every home in 01803
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) 01803, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 01803 in?
- 01803 is a Burlington, MA mailing address. By land area, 100% lies inside Burlington.
- What county is 01803 in?
- 01803 is in Middlesex County.
- What is the population of 01803?
- About 26,274 people (±26), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 26,074.
- What is the median household income in 01803?
- $146,436 (±$14,210), 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 01803?
- 22 USPS carrier routes with 10,456 residential and 1,158 business mailboxes (11,821 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 01803?
- The closest, measured center to center: 01801 (2.6 mi, Woburn), 02420 (3.2 mi, Lexington), 01730 (4.1 mi, Burlington), 01821 (4.1 mi, Pinehurst), 01887 (4.6 mi, Wilmington) and 01890 (4.6 mi, Winchester).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.