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US ZIP Code Profile

ZIP Code 01803
Burlington, Massachusetts

ZIP code 01803 is in Burlington, located in Middlesex County, Massachusetts, within the Boston-Cambridge-Newton metro area. Its 2020 Census population was 26,074. The estimated median adjusted gross income per tax return is $84,507, and about 19% of filers report $200,000 or more.

2020 Population
26,074
Census ZCTA
County
Middlesex
FIPS 25017
Median income (est.)
$84,507
IRS SOI 2022
Land Area
11.709 mi²
+ 0.114 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityBurlington, MA
CountyMiddlesex County (FIPS 25017)
StateMassachusetts (FIPS 25)
Metro Area (MSA)Boston-Cambridge-Newton, MA-NH Metro Area (14460)
Census Region / DivisionNortheast Region · New England Division
Coordinates42.503227, -71.20171
Land / Water Area11.709 mi² land · 0.114 mi² water

02Income & Economics

Distribution of the 13,640 individual tax returns filed in 01803 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
20.2%
$25K–$50K
13.3%
$50K–$75K
12.6%
$75K–$100K
10.4%
$100K–$200K
24.9%
$200K+
18.6%
The $200,000+ bracket accounts for 54% of 01803's total adjusted gross income, from 19% of returns — a concentration that drives the gap between the median ($84,507) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 01803's IRS income metrics, 2020–2022.

Median income (2021→2022)
$84,507
▲ 6.0%
Filers earning $200K+
18.6%
▲ 1.2 pt
Total filers
13,640
▼ 0.2%
GET /zipc/v2/zipcodes/01803/soi?year=… $73K 2020 $80K 2021 $85K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 01803 ZCTA.

2000
22,876
 
2010
24,487
▲ +7.0%
2020
26,074
▲ +6.5%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 01803. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 01803

Burlington and its immediate neighbors, sorted by distance.

3 mi
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Distance from 01803 to any ZIP

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06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortB
USPS Finance Number241029
City AliasesBurlington

07Frequently Asked Questions

What county is ZIP code 01803 in?

ZIP code 01803 is in Middlesex County, Massachusetts (county FIPS code 25017).

What city is ZIP code 01803?

The primary USPS city for 01803 is Burlington, MA.

What metro area (MSA) is 01803 in?

01803 is part of the Boston-Cambridge-Newton, MA-NH Metro Area (MSA code 14460).

What is the population of ZIP code 01803?

The 2020 Census population of 01803 was 26,074 residents.

What is the median income in ZIP code 01803?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 01803 is about $84,507, with around 19% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.