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US ZIP Code Profile

ZIP Code 01801
Woburn, Massachusetts

ZIP code 01801 is in Woburn, located in Middlesex County, Massachusetts, within the Boston-Cambridge-Newton metro area. Its 2020 Census population was 40,891. The estimated median adjusted gross income per tax return is $67,086, and about 11% of filers report $200,000 or more.

2020 Population
40,891
Census ZCTA
County
Middlesex
FIPS 25017
Median income (est.)
$67,086
IRS SOI 2022
Land Area
12.667 mi²
+ 0.294 mi² water

01Location & Geography

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

Primary CityWoburn, 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
Coordinates42.488705, -71.15438
Land / Water Area12.667 mi² land · 0.294 mi² water

02Income & Economics

Distribution of the 22,790 individual tax returns filed in 01801 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
21.8%
$25K–$50K
17.2%
$50K–$75K
16.2%
$75K–$100K
12.0%
$100K–$200K
22.4%
$200K+
10.5%
The $200,000+ bracket accounts for 39% of 01801's total adjusted gross income, from 11% of returns — a concentration that drives the gap between the median ($67,086) 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 01801's IRS income metrics, 2020–2022.

Median income (2021→2022)
$67,086
▲ 4.6%
Filers earning $200K+
10.5%
▲ 0.9 pt
Total filers
22,790
▲ 1.7%
GET /zipc/v2/zipcodes/01801/soi?year=… $58K 2020 $64K 2021 $67K 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 01801 ZCTA.

2000
37,258
 
2010
38,903
▲ +4.4%
2020
40,891
▲ +5.1%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 01801. Powered by the same radius endpoint developers call from the API.

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ZIP codes within range of 01801

Woburn and its immediate neighbors, sorted by distance.

3 mi
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Distance from 01801 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 Number249588
City AliasesWoburn

07Frequently Asked Questions

What county is ZIP code 01801 in?

ZIP code 01801 is in Middlesex County, Massachusetts (county FIPS code 25017).

What city is ZIP code 01801?

The primary USPS city for 01801 is Woburn, MA.

What metro area (MSA) is 01801 in?

01801 is part of the Boston-Cambridge-Newton, MA-NH Metro Area (MSA code 14460).

What is the population of ZIP code 01801?

The 2020 Census population of 01801 was 40,891 residents.

What is the median income in ZIP code 01801?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 01801 is about $67,086, with around 11% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.