Residential delivery area · Massachusetts
ZIP Code 01921: Boxford, MA
ZIP code 01921 uses the postal name Boxford, Massachusetts and lies entirely in Essex County (Census 2020 ZIP-county file). About 8,300 people live there (Census Bureau, ACS 2020-2024). Median household income is $200,672 (Census Bureau, ACS 2020-2024). By Census place, 23% of its land lies in Boxford (a census-designated place); 77% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Boxford · its only residential ZIP
- County
- Essex County
- Census places
- Boxford census-designated place
- Metro area
- Boston-Cambridge-Newton, MA-NH
- House district
- MA-6 119th Congress
- State
- Massachusetts
- Time zone
- Eastern
- Land area
- 23.6 sq mi · 350 people per sq mi
Where is ZIP code 01921?
01921 centers on 42.683°, -71.027° and covers 23.6 square miles of land plus 0.9 of water. It borders 8 ZIP codes: 01845, 01833, 01834, 01949, 01983, 01835, 01969, 01938.
The map draws ZIP code areas only. For the streets inside 01921, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 01921 compare with the rest of Essex County?
| Measure | 01921 | In Essex County | In MA |
|---|---|---|---|
| People (ACS 2020-2024) | 8,250 | 28th of 44 | 281st of 539 |
| Median household income | $201k | 2nd of 39 | 27th of 406 |
| Median home value | $904k | 4th of 40 | 60th of 449 |
Its median household income is higher than in 99% of U.S. residential ZIP codes, and it is denser than 69% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 01921?
The 2020 Census counted 8,263 people in 01921; the ACS, which samples households over 2020-2024, estimates 8,250. Between the 2010 and 2020 censuses its population grew 3.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 8,250
- 2020 Census count
- 8,263+3.8% since 2010 (7,961)
- Households
- 2,783
- Median age
- 49.3
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 01921?
Of the 8,250 people the ACS estimates in 01921, 23.6% are under 18 and 21.6% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (91.4%).
- Under 1823.6%
- 18 to 6454.8%
- 65 and older21.6%
- White, not Hispanic91.4%
- Other or two or more5.6%
- Hispanic or Latino1.6%
- Asian, not Hispanic1.1%
- Black, not Hispanic0.3%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 01921 earn?
Median household income is $200,672 (ACS 2020-2024), the 2nd highest of the 39 ranked ZIP codes in Essex County. It is not measurably different from 2015-2019 ($225,775 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $200,672
- Income per person
- $89,834
- Below the poverty line
- 3.1%
- Unemployed (of the labor force)
- 3.2%
- Adults 25+ with a bachelor's degree
- 70.6%
- Adjusted gross income per tax return, 2022
- $293,1363,890 returns; wages 54% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 01921?
FHFA's house price index for 01921, built from repeat sales and appraisals of the same homes, rose 72% from 2015 to 2025 and rose 45% from 2020 to 2025, and moved +3.8% in 2025.
- Median home value (owners' estimate)
- $904,200
- Median gross rent
- $776
- Homes owned by their occupants
- 95.0%
- Housing units
- 2,910
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 01921?
143 business establishments had a location in this ZIP code in 2023, 3 fewer than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services32
- Construction30
- Administrative and support and waste management and remediation services16
- Health care and social assistance14
- Accommodation and food services11
- Other services (except public administration)9
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 01921?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 01845 | North Andover | 32,494 | $141k | 3.3 mi |
| 01833 | Georgetown | 8,432 | $154k | 3.7 mi |
| 01834 | Groveland | 6,777 | $142k | 4.9 mi |
| 01949 | Middleton | 9,816 | $167k | 5.1 mi |
| 01983 | Topsfield | 6,564 | $196k | 5.1 mi |
| 01835 | Haverhill | 14,782 | $114k | 5.8 mi |
| 01969 | Rowley | 6,251 | $133k | 7.6 mi |
| 01938 | Ipswich | 13,930 | $139k | 9.5 mi |
| 01841 | Lawrence | 52,769 | $57k | 6.5 mi (near) |
| 01843 | Lawrence | 27,445 | $68k | 6.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.