01521 ZIP Code — Holland, MA

Hampden County, Massachusetts

ZIP code 01521 is located in Holland, Massachusetts, within Hampden County. It covers approximately 12.28 square miles and serves a population of 2,585 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 508.

About ZIP code 01521

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 $278,000. Owner-occupancy is high at 90%, well above the national average.

Median household income is $81,250. 37% 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 near the national average, with 31% of residents holding a bachelor's degree or higher.

Overall, ZIP code 01521 reflects a community defined by high homeownership and a significant Social Security-dependent population.

2,585

population

12.28

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

01521 ZIP code map

Cities in ZIP code 01521

Below are the cities the US Postal Service accepts for ZIP code 01521. Using any city not on this list may result in mail delivery delays.

City	Status
Holland	Acceptable
Holland	Preferred

Nearby ZIP codes

01081 Wales (3.2 mi) 01518 Fiskdale (4 mi) 01518 Fiskdale (4 mi) 01010 Brimfield (4.7 mi) 01566 Sturbridge (5.2 mi) 01550 Southbridge (6.4 mi) 06076 Stafford Springs (6.9 mi) 01057 Monson (7.7 mi) 01506 Brookfield (9.6 mi) 06281 Woodstock (10.7 mi) 01507 Charlton (11 mi) 01585 West Brookfield (11.3 mi)

Demographics updated 05/2026

Population
Total population	2,585
Population density	211 / sq mi
State FIPS	25
County FIPS	013

Geography
Land area	12.28 sq mi
Water area	0.77 sq mi
Latitude	42.0645
Longitude	-72.1684
Timezone	Eastern (ET)
Area code	508

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	26.5%	44.2%	31.3%
$50k – $100k	38.8%	28.3%	25.9%
$100k – $200k	29.6%	21.6%	28.5%
Over $200k	5.1%	5.9%	14.3%

Demographics & statistics

2,585

Population

211

People per sq mi

51.2

Median age

$81,250

Median household income

$47,951

Per capita income

$278,000

Median home value

$1,212

Median monthly rent

90.1%

Home ownership

8.9%

Poverty rate

6.3%

Unemployment

1,436

Housing units

30.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

183

25–34

173

111

35–44

104

166

45–54

157

55–59

158

60–64

149

233

65–74

220

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	424	16.4%
18 and over	2,161	83.6%
65 and over	622	24.1%
Median age	51.2 years

Race & ethnicity

White 94.6%

Two or more races 3.2%

American Indian / Alaska Native 1.2%

Asian 0.8%

Hispanic or Latino 0.2%

Group	Count	%
White	2,451	94.6%
Two or more races	82	3.2%
American Indian / Alaska Native	31	1.2%
Asian	21	0.8%
Hispanic or Latino	6	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	26.5%	44.2%	31.3%
$50k – $100k	38.8%	28.3%	25.9%
$100k – $200k	29.6%	21.6%	28.5%
Over $200k	5.1%	5.9%	14.3%

Under $10k 6.5%

$10k–$15k 2.0%

$15k–$25k 5.9%

$25k–$35k 5.0%

$35k–$50k 10.2%

$50k–$75k 12.2%

$75k–$100k 18.4%

$100k–$150k 22.2%

$150k–$200k 10.0%

$200k+ 7.7%

Range	% of households
Under $10k	6.5%
$10k–$15k	2.0%
$15k–$25k	5.9%
$25k–$35k	5.0%
$35k–$50k	10.2%
$50k–$75k	12.2%
$75k–$100k	18.4%
$100k–$150k	22.2%
$150k–$200k	10.0%
$200k+	7.7%
Median income	$81,250

Housing

Home values

Under $50k 0.9%

$50k–$100k 0.5%

$100k–$150k 13.3%

$150k–$200k 6.8%

$200k–$300k 38.5%

$300k–$500k 31.8%

$500k–$1M 6.3%

$1M+ 1.8%

Housing overview

Metric	Value
Median home value	$278,000
Median rent / month	$1,212
Owner occupied	90.1%
Renter occupied	9.9%
Vacant	24.3%
Single-family detached	96.2%
Large apartment buildings	0.0%
Mobile homes	0.6%
Median rooms	5.2
Avg household size (owned)	2.24

Year built

Era	%
2020 or later	0.3%
2010–2019	7.0%
2000–2009	15.5%
1990–1999	4.8%
1980–1989	19.5%
1970–1979	13.5%
1960–1969	12.6%
1950–1959	17.1%
1940–1949	3.9%
1939 or earlier	5.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	8.0%
2 bedrooms	38.6%
3 bedrooms	39.6%
4 bedrooms	10.1%
5+ bedrooms	3.7%

Vehicles per household

Vehicles	% of households
No vehicle	2.2%
1 vehicle	29.4%
2 vehicles	48.9%
3 or more	19.5%

Heating fuel

Fuel type	%
Utility gas	4.6%
Electricity	14.0%
Propane / LP gas	12.5%
Fuel oil	55.5%
Wood	7.3%

Households & families

Household type	Count	%
Married-couple family	507	43.1%
Cohabiting couple	88	7.5%
Male householder, no spouse	310	26.4%
Female householder, no spouse	270	23.0%
Households with children under 18	256	21.8%
Households with seniors (65+)	422	35.9%
Average household size	2.20

Marital status

Status	Male	Female
Never married	33.1%	30.6%
Married	44.0%	51.5%
Separated	0.0%	1.0%
Widowed	3.3%	4.0%
Divorced	19.6%	12.9%

Education

Less than 9th grade 1.1%

Some HS, no diploma 5.7%

HS graduate 27.0%

Some college, no degree 22.4%

Associate's degree 13.2%

Bachelor's degree 21.3%

Graduate / professional 9.3%

Metric	%
HS diploma or higher	93.2%
Bachelor's or higher	30.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	10	2.1%
Kindergarten	42	8.9%
Elementary school	154	32.6%
High school	140	29.7%
College / grad school	126	26.7%

Employment

Industry of employment

Education & healthcare 25.5%

Public administration 10.6%

Professional & management 10.1%

Construction 9.5%

Arts, food & hospitality 8.0%

Retail trade 7.1%

Manufacturing 7.0%

Other services 6.5%

Transportation & utilities 4.5%

Finance & real estate 4.5%

Wholesale trade 3.7%

Information 2.1%

Agriculture & mining 0.8%

Occupation

Category	%
Management, business & arts	35.0%
Service	28.6%
Sales & office	15.4%
Natural resources & construction	14.3%
Production & transportation	6.7%

Employment type

Type	%
Private sector	75.8%
Government	18.0%
Self-employed	6.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	86.0%
Carpool	10.0%
Public transit	0.0%
Walk	0.4%
Work from home	3.6%
Other means	0.0%
Avg commute (minutes)	37.4

Poverty

All people 8.9%

Under 18 years 6.4%

18 and over 9.4%

Married-couple families 2.2%

Female-led households 22.8%

Income support

Source	% of households
Social Security	36.5%
Retirement income	33.2%
Supplemental Security	5.1%
Cash public assistance	1.9%
Food stamps / SNAP	8.2%

Health indicators

Condition	%
Obesity	29.6%
High blood pressure	29.0%
High cholesterol	30.0%
Diabetes	8.1%
Heart disease	5.5%
Stroke	2.5%
Asthma	11.0%
Arthritis	25.6%
Kidney disease	2.4%
Pulmonary disease	5.7%
Cancer	6.4%

Behavior / access	%
Smoking	16.0%
Binge drinking	18.7%
No physical activity	18.4%
Less than 7 hrs sleep	35.3%
Depression	21.5%
Fair or poor health	10.7%
Poor mental health	15.4%
Poor physical health	8.8%
No health insurance	6.0%
Visited doctor (checkup)	74.8%
Visited dentist	74.8%
Cholesterol screening	91.2%
Teeth loss	11.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	232	10.7%

Disability	%
Any disability	14.4%
Under 18	6.6%
18–64 years	10.9%
65 and over	28.5%

Health insurance coverage

Type	%
Private insurance	72.3%
Public insurance	48.5%
No insurance	3.6%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,502	96.8%
Spanish	38	1.5%
Other Indo-European	17	0.7%
Asian & Pacific Islander	21	0.8%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,528	97.8%
Born in same state	2,481	96.0%
Born in different state	1,891	73.2%
Foreign born	47	1.8%
Naturalized citizen	57	2.2%
Not a US citizen	57	100.0%

Ancestry

Ancestry	Count	%
Arab	315	12.2%
German	310	12%
Italian	310	12%
French	310	12%
Irish	17	0.7%

Ancestry	Count	%
Dutch	13	0.5%
English	10	0.4%
Polish	6	0.2%
Norwegian	6	0.2%

Technology access

Metric	% of households
Computer access	45.5%
Internet access	97.4%

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

Frequently asked questions about ZIP code 01521

What city is ZIP code 01521 in?

ZIP code 01521 is primarily assigned to Holland, Massachusetts.

What county is ZIP code 01521 in?

ZIP code 01521 falls within Hampden County, Massachusetts.

Is ZIP code 01521 mostly owner-occupied?

90% of occupied units in ZIP code 01521 are owner-occupied, well above the national average.

Does ZIP code 01521 have a large retiree population?

37% of households in ZIP code 01521 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 01521 have a large veteran population?

11% of civilians in ZIP code 01521 are veterans, above the national average of ~7%.

What is the population of ZIP code 01521?

ZIP code 01521 has an estimated population of 2,585 residents, with a density of 210 people per square mile.

What timezone is ZIP code 01521 in?

ZIP code 01521 observes the EST timezone.