01921 ZIP Code — Boxford, MA

Essex County, Massachusetts

ZIP code 01921 is located in Boxford, Massachusetts, within Essex County. It covers approximately 23.59 square miles and serves a population of 8,234 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 978/508/351.

About ZIP code 01921

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1980s, giving the area an established character. Median home value is $810,300. Owner-occupancy is high at 95%, well above the national average.

The gap between median ($203,750) and mean household income suggests income inequality — a small number of higher earners pull the average up. 33% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 37 minutes suggests many residents work outside the immediate area.

Educational attainment is high — 70% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 01921 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

8,234

population

23.59

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

01921 ZIP code map

Cities in ZIP code 01921

Below are the cities the US Postal Service accepts for ZIP code 01921. Using any city not on this list may result in mail delivery delays.

City	Status
Boxford	Preferred

Nearby ZIP codes

01833 Georgetown (4 mi) 01983 Topsfield (5.3 mi) 01949 Middleton (5.4 mi) 01899 Andover (5.7 mi) 01812 Andover (5.7 mi) 01835 Haverhill (5.9 mi) 01843 Lawrence (6.7 mi) 01840 Lawrence (6.9 mi) 01841 Lawrence (7.1 mi) 01810 Andover (7.2 mi) 01969 Rowley (7.3 mi) 01864 North Reading (7.4 mi)

Demographics updated 05/2026

Population
Total population	8,234
Population density	349 / sq mi
State FIPS	25
County FIPS	009

Geography
Land area	23.59 sq mi
Water area	0.85 sq mi
Latitude	42.6793
Longitude	-71.0294
Timezone	Eastern (ET)
Area code	978/508/351

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	8.5%	32.1%	31.3%
$50k – $100k	17.5%	26.4%	25.9%
$100k – $200k	29.4%	27.2%	28.5%
Over $200k	44.5%	14.3%	14.3%

Demographics & statistics

8,234

Population

349

People per sq mi

49.8

Median age

$203,750

Median household income

$94,741

Per capita income

$810,300

Median home value

$730

Median monthly rent

94.5%

Home ownership

1.5%

Poverty rate

4.1%

Unemployment

2,787

Housing units

69.7%

Bachelor's or higher

Age distribution

Male Female

125

Under 5

119

227

5–9

217

353

10–14

337

382

15–19

364

138

20–24

132

251

25–34

240

414

35–44

395

734

45–54

700

390

55–59

372

354

60–64

338

604

65–74

575

196

75–84

187

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,932	23.5%
18 and over	6,302	76.5%
65 and over	1,652	20.1%
Median age	49.8 years

Race & ethnicity

White 89.1%

Two or more races 5.8%

Hispanic or Latino 4%

Asian 1.1%

Group	Count	%
White	7,642	89.1%
Two or more races	497	5.8%
Hispanic or Latino	342	4%
Asian	93	1.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	8.5%	32.1%	31.3%
$50k – $100k	17.5%	26.4%	25.9%
$100k – $200k	29.4%	27.2%	28.5%
Over $200k	44.5%	14.3%	14.3%

Under $10k 0.7%

$15k–$25k 0.3%

$25k–$35k 3.9%

$35k–$50k 3.2%

$50k–$75k 7.4%

$75k–$100k 7.5%

$100k–$150k 11.1%

$150k–$200k 14.1%

$200k+ 51.8%

Range	% of households
Under $10k	0.7%
$15k–$25k	0.3%
$25k–$35k	3.9%
$35k–$50k	3.2%
$50k–$75k	7.4%
$75k–$100k	7.5%
$100k–$150k	11.1%
$150k–$200k	14.1%
$200k+	51.8%
Median income	$203,750

Housing

Home values

$100k–$150k 1.8%

$150k–$200k 1.4%

$300k–$500k 11.4%

$500k–$1M 54.9%

$1M+ 30.4%

Housing overview

Metric	Value
Median home value	$810,300
Median rent / month	$730
Owner occupied	94.5%
Renter occupied	5.5%
Vacant	2.3%
Single-family detached	86.7%
Large apartment buildings	2.6%
Mobile homes	0.0%
Median rooms	10.0
Avg household size (owned)	2.91

Year built

Era	%
2020 or later	0.0%
2010–2019	2.8%
2000–2009	9.0%
1990–1999	13.4%
1980–1989	20.6%
1970–1979	11.2%
1960–1969	16.7%
1950–1959	11.7%
1940–1949	3.3%
1939 or earlier	11.4%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	1.2%
2 bedrooms	7.7%
3 bedrooms	20.0%
4 bedrooms	53.3%
5+ bedrooms	16.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	16.6%
2 vehicles	43.2%
3 or more	40.3%

Heating fuel

Fuel type	%
Utility gas	52.9%
Electricity	6.5%
Propane / LP gas	8.8%
Fuel oil	31.2%
Wood	0.6%

Households & families

Household type	Count	%
Married-couple family	2,241	77.8%
Cohabiting couple	56	1.9%
Male householder, no spouse	371	12.9%
Female householder, no spouse	211	7.3%
Households with children under 18	1,147	39.8%
Households with seniors (65+)	1,032	35.8%
Average household size	2.86

Marital status

Status	Male	Female
Never married	25.1%	23.8%
Married	69.3%	64.7%
Separated	0.0%	0.4%
Widowed	1.3%	5.9%
Divorced	4.4%	5.2%

Education

Less than 9th grade 1.1%

Some HS, no diploma 1.3%

HS graduate 11.9%

Some college, no degree 7.0%

Associate's degree 8.9%

Bachelor's degree 39.5%

Graduate / professional 30.3%

Metric	%
HS diploma or higher	97.6%
Bachelor's or higher	69.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	68	3.0%
Kindergarten	23	1.0%
Elementary school	940	41.9%
High school	709	31.6%
College / grad school	505	22.5%

Employment

Industry of employment

Education & healthcare 23.1%

Professional & management 17.8%

Finance & real estate 13.5%

Retail trade 12.5%

Manufacturing 10.8%

Public administration 5.9%

Construction 5.4%

Arts, food & hospitality 3.9%

Information 2.6%

Agriculture & mining 1.8%

Wholesale trade 1.2%

Other services 1.0%

Transportation & utilities 0.3%

Occupation

Category	%
Management, business & arts	65.1%
Service	5.4%
Sales & office	21.8%
Natural resources & construction	4.5%
Production & transportation	3.1%

Employment type

Type	%
Private sector	80.6%
Government	11.7%
Self-employed	7.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	69.7%
Carpool	5.5%
Public transit	1.4%
Walk	3.0%
Work from home	15.7%
Other means	4.8%
Avg commute (minutes)	36.8

Poverty

All people 1.5%

Under 18 years 1.0%

18 and over 1.7%

Married-couple families 0.4%

Female-led households 0.0%

Income support

Source	% of households
Social Security	32.5%
Retirement income	33.5%
Supplemental Security	3.3%
Cash public assistance	0.5%
Food stamps / SNAP	0.7%

Health indicators

Condition	%
Obesity	23.7%
High blood pressure	25.6%
High cholesterol	30.9%
Diabetes	6.9%
Heart disease	4.8%
Stroke	2.1%
Asthma	10.2%
Arthritis	24.4%
Kidney disease	2.3%
Pulmonary disease	4.0%
Cancer	7.7%

Behavior / access	%
Smoking	8.8%
Binge drinking	16.7%
No physical activity	15.2%
Less than 7 hrs sleep	26.4%
Depression	17.7%
Fair or poor health	7.5%
Poor mental health	11.3%
Poor physical health	6.9%
No health insurance	3.7%
Visited doctor (checkup)	81.3%
Visited dentist	83.8%
Cholesterol screening	94.6%
Teeth loss	5.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	378	6.0%

Disability	%
Any disability	9.6%
Under 18	1.7%
18–64 years	7.1%
65 and over	26.0%

Health insurance coverage

Type	%
Private insurance	92.4%
Public insurance	22.4%
No insurance	0.5%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	7,990	97.0%
Spanish	148	1.9%
Other Indo-European	32	0.4%
Asian & Pacific Islander	116	1.5%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	7,702	93.5%
Born in same state	7,580	92.1%
Born in different state	5,250	63.8%
Foreign born	122	1.5%
Naturalized citizen	532	6.5%
Not a US citizen	465	87.4%

Ancestry

Ancestry	Count	%
Italian	1,683	20.4%
French	1,216	14.8%
Arab	440	5.3%
German	373	4.5%

Ancestry	Count	%
Norwegian	125	1.5%
Dutch	123	1.5%
English	82	1%
Polish	54	0.7%

Technology access

Metric	% of households
Computer access	35.0%
Internet access	100.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 01921

What city is ZIP code 01921 in?

ZIP code 01921 is primarily assigned to Boxford, Massachusetts.

What county is ZIP code 01921 in?

ZIP code 01921 falls within Essex County, Massachusetts.

How educated is the population of ZIP code 01921?

70% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 01921 mostly owner-occupied?

95% of occupied units in ZIP code 01921 are owner-occupied, well above the national average.

What is the median household income in ZIP code 01921?

The median household income in ZIP code 01921 is $203,750, above the national median of ~$75,000.

What is the typical home value in ZIP code 01921?

The median home value in ZIP code 01921 is $810,300.

What timezone is ZIP code 01921 in?

ZIP code 01921 observes the EST timezone.