01581 ZIP Code — Westborough, MA

Worcester County, Massachusetts

ZIP code 01581 is located in Westborough, Massachusetts, within Worcester County. It covers approximately 20.61 square miles and serves a population of 21,360 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 508/774.

About ZIP code 01581

The housing stock consists of a mix of housing types. Most homes were built in the 1970s, giving the area an established character. Median home value is $601,900. Owner-occupancy sits near the national average at 61%.

The gap between median ($133,145) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 5% is below the national average.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 29 minutes is near the national average. Remote work is prevalent — 23% of workers work from home.

Educational attainment is high — 69% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 01581 reflects a community defined by a highly educated population and a high rate of remote workers.

21,360

population

20.61

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

01581 ZIP code map

Cities in ZIP code 01581

Below are the cities the US Postal Service accepts for ZIP code 01581. Using any city not on this list may result in mail delivery delays.

City	Status
Westborough	Acceptable
Westborough	Preferred

Nearby ZIP codes

01772 Southborough (4.3 mi) 01532 Northborough (4.6 mi) 01748 Hopkinton (4.8 mi) 01536 North Grafton (5 mi) 01545 Shrewsbury (5.5 mi) 01519 Grafton (5.7 mi) 01546 Shrewsbury (5.7 mi) 01745 Fayville (5.8 mi) 01568 Upton (6.2 mi) 01752 Marlborough (6.3 mi) 01721 Ashland (7.2 mi) 01560 South Grafton (7.3 mi)

Demographics updated 05/2026

Population
Total population	21,360
Population density	1,036 / sq mi
State FIPS	25
County FIPS	027

Geography
Land area	20.61 sq mi
Water area	0.86 sq mi
Latitude	42.2662
Longitude	-71.6092
Timezone	Eastern (ET)
Area code	508/774

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	20.8%	33.6%	31.3%
$50k – $100k	23.0%	27.5%	25.9%
$100k – $200k	28.8%	28.7%	28.5%
Over $200k	27.4%	10.3%	14.3%

Demographics & statistics

21,360

Population

1,036

People per sq mi

38.9

Median age

$133,145

Median household income

$67,368

Per capita income

$601,900

Median home value

$1,937

Median monthly rent

60.9%

Home ownership

4.6%

Poverty rate

3.0%

Unemployment

5,440

Housing units

68.8%

Bachelor's or higher

Age distribution

Male Female

617

Under 5

627

732

5–9

744

823

10–14

837

688

15–19

700

390

20–24

396

1,321

25–34

1,342

1,666

35–44

1,693

1,512

45–54

1,536

742

55–59

755

529

60–64

537

913

65–74

927

413

75–84

419

248

85+

253

← Male

Female →

Age summary

Group	Count	%
Under 18	5,419	25.4%
18 and over	15,941	74.6%
65 and over	3,173	14.9%
Median age	38.9 years

Race & ethnicity

White 59.1%

Asian 25.6%

Hispanic or Latino 4.9%

Two or more races 3.8%

Other race 3.4%

Black or African American 3.1%

Group	Count	%
White	13,276	59.1%
Asian	5,741	25.6%
Hispanic or Latino	1,103	4.9%
Two or more races	864	3.8%
Other race	769	3.4%
Black or African American	704	3.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	20.8%	33.6%	31.3%
$50k – $100k	23.0%	27.5%	25.9%
$100k – $200k	28.8%	28.7%	28.5%
Over $200k	27.4%	10.3%	14.3%

Under $10k 2.5%

$10k–$15k 0.8%

$15k–$25k 3.9%

$25k–$35k 2.5%

$35k–$50k 6.8%

$50k–$75k 11.4%

$75k–$100k 9.0%

$100k–$150k 20.0%

$150k–$200k 10.2%

$200k+ 33.0%

Range	% of households
Under $10k	2.5%
$10k–$15k	0.8%
$15k–$25k	3.9%
$25k–$35k	2.5%
$35k–$50k	6.8%
$50k–$75k	11.4%
$75k–$100k	9.0%
$100k–$150k	20.0%
$150k–$200k	10.2%
$200k+	33.0%
Median income	$133,145

Housing

Home values

Under $50k 0.7%

$50k–$100k 0.7%

$100k–$150k 0.7%

$150k–$200k 1.1%

$200k–$300k 4.9%

$300k–$500k 25.7%

$500k–$1M 59.6%

$1M+ 6.5%

Housing overview

Metric	Value
Median home value	$601,900
Median rent / month	$1,937
Owner occupied	60.9%
Renter occupied	39.1%
Vacant	6.9%
Single-family detached	49.3%
Large apartment buildings	16.4%
Mobile homes	0.1%
Median rooms	5.5
Avg household size (owned)	2.89

Year built

Era	%
2020 or later	0.2%
2010–2019	11.8%
2000–2009	6.5%
1990–1999	14.1%
1980–1989	10.6%
1970–1979	17.0%
1960–1969	13.9%
1950–1959	9.0%
1940–1949	5.5%
1939 or earlier	11.4%

Bedrooms

Size	% of units
No bedroom (studio)	5.3%
1 bedroom	16.9%
2 bedrooms	26.7%
3 bedrooms	22.2%
4 bedrooms	24.3%
5+ bedrooms	4.6%

Vehicles per household

Vehicles	% of households
No vehicle	5.8%
1 vehicle	34.4%
2 vehicles	43.7%
3 or more	16.1%

Heating fuel

Fuel type	%
Utility gas	48.5%
Electricity	26.8%
Propane / LP gas	2.3%
Fuel oil	20.0%
Wood	1.3%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	4,951	62.2%
Cohabiting couple	383	4.8%
Male householder, no spouse	1,179	14.8%
Female householder, no spouse	1,449	18.2%
Households with children under 18	3,101	38.9%
Households with seniors (65+)	1,990	25.0%
Average household size	2.62

Marital status

Status	Male	Female
Never married	28.7%	22.6%
Married	62.0%	61.1%
Separated	0.6%	1.4%
Widowed	2.1%	5.7%
Divorced	6.6%	9.2%

Education

Less than 9th grade 1.5%

Some HS, no diploma 2.6%

HS graduate 11.9%

Some college, no degree 9.5%

Associate's degree 5.7%

Bachelor's degree 32.9%

Graduate / professional 35.9%

Metric	%
HS diploma or higher	95.9%
Bachelor's or higher	68.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	348	6.4%
Kindergarten	259	4.8%
Elementary school	2,480	45.7%
High school	1,296	23.9%
College / grad school	1,040	19.2%

Employment

Industry of employment

Professional & management 24.4%

Education & healthcare 21.6%

Manufacturing 13.9%

Retail trade 10.7%

Arts, food & hospitality 7.8%

Finance & real estate 6.1%

Construction 3.5%

Other services 3.0%

Information 2.7%

Transportation & utilities 2.5%

Public administration 2.2%

Wholesale trade 1.3%

Agriculture & mining 0.5%

Occupation

Category	%
Management, business & arts	65.8%
Service	11.3%
Sales & office	14.6%
Natural resources & construction	2.9%
Production & transportation	5.3%

Employment type

Type	%
Private sector	86.3%
Government	9.5%
Self-employed	4.1%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	65.6%
Carpool	5.6%
Public transit	3.3%
Walk	0.8%
Work from home	23.1%
Other means	1.6%
Avg commute (minutes)	29.4

Poverty

All people 4.6%

Under 18 years 3.6%

18 and over 4.9%

Married-couple families 2.4%

Female-led households 0.0%

Income support

Source	% of households
Social Security	18.3%
Retirement income	18.9%
Supplemental Security	4.2%
Cash public assistance	1.3%
Food stamps / SNAP	4.0%

Health indicators

Condition	%
Obesity	25.1%
High blood pressure	25.8%
High cholesterol	29.5%
Diabetes	7.0%
Heart disease	4.6%
Stroke	2.0%
Asthma	9.2%
Arthritis	23.3%
Kidney disease	2.1%
Pulmonary disease	3.8%
Cancer	6.8%

Behavior / access	%
Smoking	10.0%
Binge drinking	16.0%
No physical activity	17.0%
Less than 7 hrs sleep	30.2%
Depression	16.1%
Fair or poor health	7.7%
Poor mental health	11.3%
Poor physical health	6.4%
No health insurance	4.7%
Visited doctor (checkup)	80.2%
Visited dentist	79.1%
Cholesterol screening	92.6%
Teeth loss	7.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	586	3.7%

Disability	%
Any disability	7.9%
Under 18	1.2%
18–64 years	6.3%
65 and over	26.7%

Health insurance coverage

Type	%
Private insurance	85.9%
Public insurance	23.8%
No insurance	1.2%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	20,116	94.2%
Spanish	2,015	10.0%
Other Indo-European	269	1.3%
Asian & Pacific Islander	910	4.5%
Other languages	740	3.7%

Place of birth & citizenship

Origin	Count	%
Native born (US)	15,125	70.8%
Born in same state	14,879	69.7%
Born in different state	9,418	44.1%
Foreign born	246	1.2%
Naturalized citizen	6,235	29.2%
Not a US citizen	2,804	45.0%

Ancestry

Ancestry	Count	%
Italian	3,199	15%
French	1,974	9.2%
Arab	782	3.7%
German	437	2%
English	161	0.8%

Ancestry	Count	%
Polish	53	0.2%
Irish	41	0.2%
Norwegian	30	0.1%
Dutch	26	0.1%

Technology access

Metric	% of households
Computer access	37.3%
Internet access	97.2%

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

Frequently asked questions about ZIP code 01581

What city is ZIP code 01581 in?

ZIP code 01581 is primarily assigned to Westborough, Massachusetts.

What county is ZIP code 01581 in?

ZIP code 01581 falls within Worcester County, Massachusetts.

How educated is the population of ZIP code 01581?

69% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the median household income in ZIP code 01581?

The median household income in ZIP code 01581 is $133,145, above the national median of ~$75,000.

What is the typical home value in ZIP code 01581?

The median home value in ZIP code 01581 is $601,900.

What is the population of ZIP code 01581?

ZIP code 01581 has an estimated population of 21,360 residents, with a density of 1,037 people per square mile.

What timezone is ZIP code 01581 in?

ZIP code 01581 observes the EST timezone.