02420 ZIP Code — Lexington, MA

Middlesex County, Massachusetts

ZIP code 02420 is located in Lexington, Massachusetts, within Middlesex County. It covers approximately 7.04 square miles and serves a population of 16,356 residents. This is a po box ZIP code in the Eastern (ET) timezone, served by area code 781.

About ZIP code 02420

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $1,083,500. Owner-occupancy is high at 88%, well above the national average.

The gap between median ($221,458) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 3% is below the national average.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 30 minutes is near the national average. Remote work is prevalent — 27% of workers work from home.

Educational attainment is high — 84% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 02420 reflects a community defined by a highly educated population, high homeownership, and a high rate of remote workers.

16,356

population

7.04

sq mi land

PO Box

ZIP type

Eastern (ET)

timezone

02420 ZIP code map

Cities in ZIP code 02420

Below are the cities the US Postal Service accepts for ZIP code 02420. Using any city not on this list may result in mail delivery delays.

City	Status
Lexington	Acceptable

Demographics updated 06/2026

Population
Total population	16,356
Population density	2,323 / sq mi
State FIPS	25
County FIPS	017

Geography
Land area	7.04 sq mi
Water area	0.05 sq mi
Latitude	42.4577
Longitude	-71.2168
Timezone	Eastern (ET)
Area code	781

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	11.6%	23.8%	31.3%
$50k – $100k	11.8%	23.1%	25.9%
$100k – $200k	27.9%	32.1%	28.5%
Over $200k	48.8%	20.9%	14.3%

Demographics & statistics

16,356

Population

2,323

People per sq mi

45.4

Median age

$221,458

Median household income

$104,854

Per capita income

$1,083,500

Median home value

$2,520

Median monthly rent

87.9%

Home ownership

3.0%

Poverty rate

4.1%

Unemployment

5,090

Housing units

84.4%

Bachelor's or higher

Age distribution

Male Female

354

Under 5

382

518

5–9

559

778

10–14

839

695

15–19

749

273

20–24

295

320

25–34

345

939

35–44

1,012

1,420

45–54

1,531

611

55–59

660

439

60–64

474

925

65–74

997

369

75–84

398

228

85+

246

← Male

Female →

Age summary

Group	Count	%
Under 18	4,395	26.9%
18 and over	11,961	73.1%
65 and over	3,163	19.3%
Median age	45.4 years

Race & ethnicity

White 56.6%

Asian 27.8%

Two or more races 6.2%

Hispanic or Latino 5.4%

Black or African American 2%

Other race 1.9%

Group	Count	%
White	9,796	56.6%
Asian	4,816	27.8%
Two or more races	1,064	6.2%
Hispanic or Latino	940	5.4%
Black or African American	354	2%
Other race	326	1.9%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	11.6%	23.8%	31.3%
$50k – $100k	11.8%	23.1%	25.9%
$100k – $200k	27.9%	32.1%	28.5%
Over $200k	48.8%	20.9%	14.3%

Under $10k 1.5%

$10k–$15k 0.8%

$15k–$25k 2.4%

$25k–$35k 1.4%

$35k–$50k 4.4%

$50k–$75k 5.0%

$75k–$100k 4.5%

$100k–$150k 12.7%

$150k–$200k 14.0%

$200k+ 53.3%

Range	% of households
Under $10k	1.5%
$10k–$15k	0.8%
$15k–$25k	2.4%
$25k–$35k	1.4%
$35k–$50k	4.4%
$50k–$75k	5.0%
$75k–$100k	4.5%
$100k–$150k	12.7%
$150k–$200k	14.0%
$200k+	53.3%
Median income	$221,458

Housing

Home values

Under $50k 0.9%

$50k–$100k 0.3%

$100k–$150k 0.3%

$200k–$300k 0.4%

$300k–$500k 2.4%

$500k–$1M 36.9%

$1M+ 58.8%

Housing overview

Metric	Value
Median home value	$1,083,500
Median rent / month	$2,520
Owner occupied	87.9%
Renter occupied	12.1%
Vacant	3.1%
Single-family detached	78.3%
Large apartment buildings	3.3%
Mobile homes	0.0%
Median rooms	7.6
Avg household size (owned)	2.91

Year built

Era	%
2020 or later	3.6%
2010–2019	7.7%
2000–2009	7.6%
1990–1999	5.6%
1980–1989	4.0%
1970–1979	6.9%
1960–1969	18.0%
1950–1959	19.0%
1940–1949	5.9%
1939 or earlier	21.6%

Bedrooms

Size	% of units
No bedroom (studio)	0.4%
1 bedroom	2.4%
2 bedrooms	16.1%
3 bedrooms	29.1%
4 bedrooms	33.9%
5+ bedrooms	18.1%

Vehicles per household

Vehicles	% of households
No vehicle	1.7%
1 vehicle	26.4%
2 vehicles	52.9%
3 or more	18.9%

Heating fuel

Fuel type	%
Utility gas	43.7%
Electricity	10.9%
Propane / LP gas	5.1%
Fuel oil	38.2%
Solar	1.3%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	4,138	74.0%
Cohabiting couple	184	3.3%
Male householder, no spouse	538	9.6%
Female householder, no spouse	729	13.0%
Households with children under 18	2,568	45.9%
Households with seniors (65+)	2,027	36.3%
Average household size	2.89

Marital status

Status	Male	Female
Never married	22.2%	24.6%
Married	70.4%	63.9%
Separated	0.6%	0.3%
Widowed	2.4%	5.1%
Divorced	4.4%	6.1%

Education

Less than 9th grade 0.7%

Some HS, no diploma 1.1%

HS graduate 4.4%

Some college, no degree 6.3%

Associate's degree 3.0%

Bachelor's degree 25.4%

Graduate / professional 59.1%

Metric	%
HS diploma or higher	98.1%
Bachelor's or higher	84.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	245	5.1%
Kindergarten	149	3.1%
Elementary school	2,326	48.6%
High school	1,402	29.3%
College / grad school	663	13.9%

Employment

Industry of employment

Education & healthcare 30.2%

Professional & management 26.2%

Manufacturing 11.6%

Finance & real estate 8.9%

Retail trade 4.7%

Arts, food & hospitality 4.4%

Information 2.8%

Other services 2.7%

Public administration 2.5%

Transportation & utilities 2.4%

Construction 1.4%

Agriculture & mining 1.2%

Wholesale trade 1.0%

Occupation

Category	%
Management, business & arts	79.9%
Service	5.8%
Sales & office	10.5%
Natural resources & construction	2.3%
Production & transportation	1.5%

Employment type

Type	%
Private sector	85.1%
Government	7.0%
Self-employed	7.8%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	58.5%
Carpool	5.1%
Public transit	5.4%
Walk	2.0%
Work from home	26.9%
Other means	2.1%
Avg commute (minutes)	30.4

Poverty

All people 3.0%

Under 18 years 2.9%

18 and over 3.1%

Married-couple families 1.0%

Female-led households 23.6%

Income support

Source	% of households
Social Security	25.7%
Retirement income	18.4%
Supplemental Security	1.4%
Cash public assistance	1.8%
Food stamps / SNAP	1.8%

Health indicators

Condition	%
Obesity	18.0%
High blood pressure	28.2%
High cholesterol	32.7%
Diabetes	7.6%
Heart disease	5.1%
Stroke	2.1%
Asthma	8.6%
Arthritis	22.2%
Kidney disease	2.5%
Pulmonary disease	3.5%
Cancer	8.5%

Behavior / access	%
Smoking	5.9%
Binge drinking	13.4%
No physical activity	12.8%
Less than 7 hrs sleep	25.0%
Depression	14.4%
Fair or poor health	6.5%
Poor mental health	9.2%
Poor physical health	5.9%
No health insurance	3.2%
Visited doctor (checkup)	79.5%
Visited dentist	82.5%
Cholesterol screening	95.5%
Teeth loss	5.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	525	4.4%

Disability	%
Any disability	6.5%
Under 18	3.7%
18–64 years	4.8%
65 and over	15.6%

Health insurance coverage

Type	%
Private insurance	90.8%
Public insurance	22.4%
No insurance	0.9%
Uninsured under 19	0.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	15,620	95.5%
Spanish	839	5.4%
Other Indo-European	81	0.5%
Asian & Pacific Islander	128	0.8%
Other languages	623	4.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	11,323	69.2%
Born in same state	10,984	67.2%
Born in different state	6,292	38.5%
Foreign born	339	2.1%
Naturalized citizen	5,033	30.8%
Not a US citizen	3,043	60.5%

Ancestry

Ancestry	Count	%
Italian	2,006	12.3%
French	1,346	8.2%
Arab	461	2.8%
Polish	291	1.8%
German	252	1.5%

Ancestry	Count	%
Irish	131	0.8%
Norwegian	86	0.5%
Dutch	75	0.5%
English	69	0.4%

Technology access

Metric	% of households
Computer access	34.2%
Internet access	97.6%

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

Frequently asked questions about ZIP code 02420

What city is ZIP code 02420 in?

ZIP code 02420 is primarily assigned to Lexington, Massachusetts.

What county is ZIP code 02420 in?

ZIP code 02420 falls within Middlesex County, Massachusetts.

How educated is the population of ZIP code 02420?

84% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 02420 mostly owner-occupied?

88% of occupied units in ZIP code 02420 are owner-occupied, well above the national average.

What is the median household income in ZIP code 02420?

The median household income in ZIP code 02420 is $221,458, above the national median of ~$75,000.

What is the typical home value in ZIP code 02420?

The median home value in ZIP code 02420 is $1,083,500.

What timezone is ZIP code 02420 in?

ZIP code 02420 observes the EST timezone.