01366 ZIP Code — Petersham, MA

Worcester County, Massachusetts

ZIP code 01366 is located in Petersham, Massachusetts, within Worcester County. It covers approximately 36.94 square miles and serves a population of 1,177 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 978.

About ZIP code 01366

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 $346,000. Owner-occupancy is high at 90%, well above the national average.

Median household income is $104,205. The poverty rate of 7% is below the national average. 43% 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 38 minutes suggests many residents work outside the immediate area.

Educational attainment is near the national average, with 44% of residents holding a bachelor's degree or higher.

Overall, ZIP code 01366 reflects a community defined by high homeownership and a significant Social Security-dependent population.

1,177

population

36.94

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

01366 ZIP code map

Cities in ZIP code 01366

Below are the cities the US Postal Service accepts for ZIP code 01366. Using any city not on this list may result in mail delivery delays.

City	Status
Petersham	Preferred

Nearby ZIP codes

01005 Barre (5.7 mi) 01031 Gilbertville (5.9 mi) 01331 Athol (8.1 mi) 01531 New Braintree (9.7 mi) 01468 Templeton (10.1 mi) 01068 Oakham (10.5 mi) 01072 Shutesbury (10.6 mi) 01452 Hubbardston (10.6 mi) 01082 Ware (11.3 mi) 01082 Ware (11.3 mi) 01379 Wendell (12.4 mi) 01436 Baldwinville (12.5 mi)

Demographics updated 06/2026

Population
Total population	1,177
Population density	32 / sq mi
State FIPS	25
County FIPS	027

Geography
Land area	36.94 sq mi
Water area	0.55 sq mi
Latitude	42.4459
Longitude	-72.2135
Timezone	Eastern (ET)
Area code	978

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	30.5%	33.6%	31.3%
$50k – $100k	32.0%	27.5%	25.9%
$100k – $200k	30.3%	28.7%	28.5%
Over $200k	7.2%	10.3%	14.3%

Demographics & statistics

1,177

Population

People per sq mi

52.0

Median age

$104,205

Median household income

$44,519

Per capita income

$346,000

Median home value

$1,223

Median monthly rent

90.2%

Home ownership

6.5%

Poverty rate

3.3%

Unemployment

484

Housing units

43.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

102

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	160	13.6%
18 and over	1,017	86.4%
65 and over	307	26.1%
Median age	52.0 years

Race & ethnicity

White 87.3%

Two or more races 5.6%

Hispanic or Latino 4.5%

Asian 1%

Other race 0.9%

Black or African American 0.4%

Native Hawaiian / Pacific Islander 0.2%

Group	Count	%
White	1,077	87.3%
Two or more races	69	5.6%
Hispanic or Latino	56	4.5%
Asian	12	1%
Other race	11	0.9%
Black or African American	5	0.4%
Native Hawaiian / Pacific Islander	3	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	30.5%	33.6%	31.3%
$50k – $100k	32.0%	27.5%	25.9%
$100k – $200k	30.3%	28.7%	28.5%
Over $200k	7.2%	10.3%	14.3%

Under $10k 1.3%

$15k–$25k 8.5%

$25k–$35k 4.3%

$35k–$50k 13.0%

$50k–$75k 9.8%

$75k–$100k 10.8%

$100k–$150k 27.3%

$150k–$200k 12.8%

$200k+ 12.1%

Range	% of households
Under $10k	1.3%
$15k–$25k	8.5%
$25k–$35k	4.3%
$35k–$50k	13.0%
$50k–$75k	9.8%
$75k–$100k	10.8%
$100k–$150k	27.3%
$150k–$200k	12.8%
$200k+	12.1%
Median income	$104,205

Housing

Home values

Under $50k 0.5%

$50k–$100k 2.6%

$100k–$150k 1.2%

$150k–$200k 2.9%

$200k–$300k 23.3%

$300k–$500k 57.5%

$500k–$1M 9.6%

$1M+ 2.4%

Housing overview

Metric	Value
Median home value	$346,000
Median rent / month	$1,223
Owner occupied	90.2%
Renter occupied	9.8%
Vacant	12.9%
Single-family detached	94.9%
Large apartment buildings	0.0%
Mobile homes	0.4%
Median rooms	6.8
Avg household size (owned)	2.34

Year built

Era	%
2020 or later	0.0%
2010–2019	0.4%
2000–2009	13.0%
1990–1999	10.2%
1980–1989	12.1%
1970–1979	11.2%
1960–1969	4.9%
1950–1959	4.2%
1940–1949	4.9%
1939 or earlier	39.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	7.6%
2 bedrooms	22.3%
3 bedrooms	48.2%
4 bedrooms	17.4%
5+ bedrooms	4.5%

Vehicles per household

Vehicles	% of households
No vehicle	6.1%
1 vehicle	22.3%
2 vehicles	44.0%
3 or more	27.5%

Heating fuel

Fuel type	%
Utility gas	0.7%
Electricity	4.3%
Propane / LP gas	5.6%
Fuel oil	69.0%
Wood	19.1%

Households & families

Household type	Count	%
Married-couple family	270	58.6%
Cohabiting couple	31	6.7%
Male householder, no spouse	79	17.1%
Female householder, no spouse	81	17.6%
Households with children under 18	104	22.6%
Households with seniors (65+)	206	44.7%
Average household size	2.39

Marital status

Status	Male	Female
Never married	28.2%	22.6%
Married	53.8%	59.7%
Separated	0.5%	0.6%
Widowed	7.1%	8.3%
Divorced	10.4%	8.7%

Education

Less than 9th grade 0.0%

Some HS, no diploma 3.3%

HS graduate 22.8%

Some college, no degree 23.8%

Associate's degree 6.6%

Bachelor's degree 20.3%

Graduate / professional 23.2%

Metric	%
HS diploma or higher	96.7%
Bachelor's or higher	43.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	4	1.8%
Kindergarten	28	12.5%
Elementary school	95	42.4%
High school	12	5.4%
College / grad school	85	37.9%

Employment

Industry of employment

Education & healthcare 28.5%

Manufacturing 20.3%

Construction 10.1%

Other services 7.8%

Arts, food & hospitality 5.7%

Professional & management 5.2%

Finance & real estate 4.7%

Wholesale trade 3.9%

Transportation & utilities 3.9%

Retail trade 3.7%

Public administration 2.5%

Information 1.9%

Agriculture & mining 1.7%

Occupation

Category	%
Management, business & arts	45.3%
Service	12.0%
Sales & office	19.4%
Natural resources & construction	11.0%
Production & transportation	12.3%

Employment type

Type	%
Private sector	74.3%
Government	18.8%
Self-employed	6.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	77.3%
Carpool	8.6%
Public transit	0.0%
Walk	4.6%
Work from home	9.5%
Other means	0.0%
Avg commute (minutes)	37.9

Poverty

All people 6.5%

Under 18 years 2.1%

18 and over 7.1%

Married-couple families 0.7%

Female-led households 24.1%

Income support

Source	% of households
Social Security	43.4%
Retirement income	33.8%
Supplemental Security	1.1%
Cash public assistance	2.4%
Food stamps / SNAP	6.3%

Health indicators

Condition	%
Obesity	31.0%
High blood pressure	33.0%
High cholesterol	34.0%
Diabetes	9.7%
Heart disease	6.9%
Stroke	3.0%
Asthma	10.8%
Arthritis	31.3%
Kidney disease	2.9%
Pulmonary disease	6.8%
Cancer	8.1%

Behavior / access	%
Smoking	16.1%
Binge drinking	16.1%
No physical activity	22.2%
Less than 7 hrs sleep	32.5%
Depression	19.5%
Fair or poor health	12.1%
Poor mental health	13.7%
Poor physical health	9.8%
No health insurance	5.7%
Visited doctor (checkup)	81.4%
Visited dentist	73.8%
Cholesterol screening	92.5%
Teeth loss	12.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	67	6.6%

Disability	%
Any disability	10.8%
Under 18	6.9%
18–64 years	7.9%
65 and over	19.5%

Health insurance coverage

Type	%
Private insurance	76.6%
Public insurance	40.8%
No insurance	0.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,152	97.9%
Spanish	24	2.1%
Other Indo-European	5	0.4%
Asian & Pacific Islander	12	1.0%
Other languages	7	0.6%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,149	97.6%
Born in same state	1,121	95.2%
Born in different state	855	72.6%
Foreign born	28	2.4%
Naturalized citizen	28	2.4%
Not a US citizen	26	92.9%

Ancestry

Ancestry	Count	%
Italian	250	21.2%
French	223	18.9%
Arab	120	10.2%
German	92	7.8%
English	30	2.5%

Ancestry	Count	%
Norwegian	24	2%
Polish	12	1%
Irish	7	0.6%
Dutch	2	0.2%

Technology access

Metric	% of households
Computer access	39.2%
Internet access	93.7%

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

Frequently asked questions about ZIP code 01366

What city is ZIP code 01366 in?

ZIP code 01366 is primarily assigned to Petersham, Massachusetts.

What county is ZIP code 01366 in?

ZIP code 01366 falls within Franklin County, Massachusetts.

Does ZIP code 01366 have an older population?

26% of residents in ZIP code 01366 are 65 or older, above the national average of ~17%.

Is ZIP code 01366 mostly owner-occupied?

90% of occupied units in ZIP code 01366 are owner-occupied, well above the national average.

Does ZIP code 01366 have a large retiree population?

43% of households in ZIP code 01366 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 01366?

The median home value in ZIP code 01366 is $346,000.

What timezone is ZIP code 01366 in?

ZIP code 01366 observes the EST timezone.