Comparison to Surrounding Areas
The median household income ($149,042) for 01821 is less than the median household income for 01730 ($172,400), 01741 ($250,001), and 01887 ($168,152). But it's more than 01803 ($146,436), 01862 ($138,571), 01876 ($130,204), Middlesex County ($130,847), and Billerica town ($148,200).
| 01821 | $149,042 |
| Billerica town | $148,200 |
| Middlesex County | $130,847 |
Get Median Household Income for all Zip Codes in Massachusetts.
The average household income ($162,719) for 01821 is less than the average household income for 01730 ($231,895), 01741 ($333,401), 01803 ($179,356), 01887 ($183,867), and Middlesex County ($178,070). But it's more than 01862 ($155,501), 01876 ($158,371), and Billerica town ($161,745).
| 01821 | $162,719 |
| Billerica town | $161,745 |
| Middlesex County | $178,070 |
Get Average Household Income for all Zip Codes in Massachusetts.
The per-capita income for 01821 is $61,572. The per capita income ($61,572) for 01821 is less than the per capita income for 01730 ($93,430), 01741 ($113,288), 01803 ($69,012), 01887 ($63,071), and Middlesex County ($69,556). But it's more than 01862 ($55,587), 01876 ($59,536), and Billerica town ($59,965).
| 01821 | $61,572 |
| Billerica town | $59,965 |
| Middlesex County | $69,556 |
Get Per-Capita Income for all Zip Codes in Massachusetts.
28.8% of households make over $200,000 a year. The percent high income households (28.8%) for 01821 is less than the percent high income households for 01730 (44.6%), 01741 (65.6%), 01803 (31.7%), 01887 (40.4%), Middlesex County (31.1%), and Billerica town (29.0%). But it's more than 01862 (28.6%) and 01876 (27.8%).
| 01821 | 28.8% |
| Billerica town | 29.0% |
| Middlesex County | 31.1% |
Get High Income Households for all Zip Codes in Massachusetts.
| under 25 years | 25 to 44 years | 45 to 64 years | 65 years and over | |
|---|---|---|---|---|
| 01821 | $87,984 | $174,842 | $159,158 | $88,552 |
| Billerica town | $88,669 | $169,036 | $161,250 | $87,820 |
| Middlesex County | $80,376 | $149,054 | $162,925 | $78,342 |
Get Median Household Income by Age of Householder for all Zip Codes in Massachusetts.
Use our lookalike & filtering workflow to discover every zip that matches your ideal market profile.
Our Income By Zip Code Lists let you start with a zip like 01821, then automatically find hundreds of similar zips by income, demographics, and growth potential — so you can build a smarter target list in minutes.
Get Your Income By Zip Code List
Get all zip codes in a state or the entire US with data such as median household income.
Starting at $65.
All income statistics above are the most current, comparable income statistics available from the US Census Bureau and are from the American Community Survey 2024 5-year estimates. You can find this information and other demographics for 01821 on the US Census Bureau’s website. These values are in 2024 inflation-adjusted dollars and were downloaded on 29 January 2026.
Margins of error for the income data are:
| Median Household Income | Average Household Income | Per Capita Income | High Income Households | Median Household Income by Age of Householder | ||||
|---|---|---|---|---|---|---|---|---|
| under 25 | 25 to 44 | 45 to 64 | 65+ | |||||
| 01821 | +/-$10,391 | +/-$8,064 | +/-$3,748 | +/-3.1% | +/-$35,600 | +/-$12,441 | +/-$12,034 | +/-$9,935 |
| Billerica town | +/-$7,519 | +/-$7,127 | +/-$3,025 | +/-2.9% | +/-$39,847 | +/-$4,360 | +/-$11,700 | +/-$9,217 |
| Middlesex County | +/-$1,164 | +/-$1,505 | +/-$581 | +/-0.4% | +/-$5,942 | +/-$2,605 | +/-$2,800 | +/-$2,034 |