06377 ZIP Code — Sterling, CT

Windham County, Connecticut

ZIP code 06377 is located in Sterling, Connecticut, within Windham County. It covers approximately 16.18 square miles and serves a population of 3,032 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 860/959.

About ZIP code 06377

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 $254,300. Owner-occupancy is high at 76%, well above the national average.

Median household income is $84,593. 36% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with manufacturing as the leading industry. An above-average commute of 35 minutes suggests many residents work outside the immediate area.

College attainment at 11% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 06377 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

3,032

population

16.18

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

06377 ZIP code map

Cities in ZIP code 06377

Below are the cities the US Postal Service accepts for ZIP code 06377. Using any city not on this list may result in mail delivery delays.

City	Status
Sterling	Acceptable
Sterling	Preferred

Nearby ZIP codes

06354 Moosup (1.7 mi) 06239 Danielson (4.8 mi) 06374 Plainfield (4.9 mi) 02827 Greene (5.3 mi) 06234 Brooklyn (8.2 mi) 02825 Foster (8.2 mi) 06243 East Killingly (8.6 mi) 06331 Canterbury (8.7 mi) 02815 Clayville (8.9 mi) 06241 Dayville (9.5 mi) 02816 Coventry (9.8 mi) 06384 Voluntown (9.8 mi)

Demographics updated 05/2026

Population
Total population	3,032
Population density	187 / sq mi
State FIPS	09
County FIPS	015

Geography
Land area	16.18 sq mi
Water area	0.03 sq mi
Latitude	41.7195
Longitude	-71.8231
Timezone	Eastern (ET)
Area code	860/959

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	32.3%	36.5%	32.0%
$50k – $100k	28.2%	33.6%	27.7%
$100k – $200k	37.5%	23.1%	27.1%
Over $200k	2.0%	6.9%	13.2%

Demographics & statistics

3,032

Population

187

People per sq mi

33.8

Median age

$84,593

Median household income

$36,494

Per capita income

$254,300

Median home value

$1,572

Median monthly rent

76.3%

Home ownership

17.3%

Poverty rate

5.9%

Unemployment

784

Housing units

10.7%

Bachelor's or higher

Age distribution

Male Female

138

Under 5

5–9

10–14

201

15–19

144

221

20–24

158

277

25–34

199

114

35–44

239

45–54

171

136

55–59

112

60–64

161

65–74

116

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	692	22.8%
18 and over	2,340	77.2%
65 and over	382	12.6%
Median age	33.8 years

Race & ethnicity

White 67.9%

Two or more races 13.3%

Hispanic or Latino 10%

Other race 3.6%

American Indian / Alaska Native 2.4%

Asian 1.4%

Black or African American 1.3%

Group	Count	%
White	2,288	67.9%
Two or more races	449	13.3%
Hispanic or Latino	338	10%
Other race	120	3.6%
American Indian / Alaska Native	82	2.4%
Asian	48	1.4%
Black or African American	45	1.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	32.3%	36.5%	32.0%
$50k – $100k	28.2%	33.6%	27.7%
$100k – $200k	37.5%	23.1%	27.1%
Over $200k	2.0%	6.9%	13.2%

Under $10k 0.9%

$10k–$15k 4.4%

$15k–$25k 4.4%

$25k–$35k 8.6%

$35k–$50k 9.2%

$50k–$75k 16.7%

$75k–$100k 12.6%

$100k–$150k 22.0%

$150k–$200k 15.4%

$200k+ 5.8%

Range	% of households
Under $10k	0.9%
$10k–$15k	4.4%
$15k–$25k	4.4%
$25k–$35k	8.6%
$35k–$50k	9.2%
$50k–$75k	16.7%
$75k–$100k	12.6%
$100k–$150k	22.0%
$150k–$200k	15.4%
$200k+	5.8%
Median income	$84,593

Housing

Home values

Under $50k 2.9%

$50k–$100k 0.5%

$100k–$150k 2.5%

$150k–$200k 19.1%

$200k–$300k 48.5%

$300k–$500k 24.3%

$500k–$1M 2.2%

Housing overview

Metric	Value
Median home value	$254,300
Median rent / month	$1,572
Owner occupied	76.3%
Renter occupied	23.8%
Vacant	5.1%
Single-family detached	82.1%
Large apartment buildings	0.0%
Mobile homes	4.3%
Median rooms	5.7
Avg household size (owned)	3.04

Year built

Era	%
2020 or later	0.8%
2010–2019	5.2%
2000–2009	14.9%
1990–1999	12.0%
1980–1989	14.5%
1970–1979	9.0%
1960–1969	5.4%
1950–1959	7.1%
1940–1949	0.0%
1939 or earlier	31.0%

Bedrooms

Size	% of units
No bedroom (studio)	3.4%
1 bedroom	2.7%
2 bedrooms	23.8%
3 bedrooms	51.8%
4 bedrooms	15.2%
5+ bedrooms	3.2%

Vehicles per household

Vehicles	% of households
No vehicle	2.0%
1 vehicle	28.2%
2 vehicles	44.4%
3 or more	25.4%

Heating fuel

Fuel type	%
Utility gas	3.6%
Electricity	1.7%
Propane / LP gas	6.1%
Fuel oil	73.8%
Wood	14.8%

Households & families

Household type	Count	%
Married-couple family	537	55.9%
Cohabiting couple	61	6.4%
Male householder, no spouse	94	9.8%
Female householder, no spouse	268	27.9%
Households with children under 18	383	39.9%
Households with seniors (65+)	280	29.2%
Average household size	3.16

Marital status

Status	Male	Female
Never married	43.4%	19.0%
Married	46.6%	55.5%
Separated	0.0%	2.1%
Widowed	1.4%	3.0%
Divorced	8.6%	20.4%

Education

Less than 9th grade 2.0%

Some HS, no diploma 5.1%

HS graduate 36.6%

Some college, no degree 36.3%

Associate's degree 9.3%

Bachelor's degree 7.3%

Graduate / professional 3.4%

Metric	%
HS diploma or higher	92.8%
Bachelor's or higher	10.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	67	10.9%
Kindergarten	34	5.5%
Elementary school	149	24.2%
High school	286	46.4%
College / grad school	80	13.0%

Employment

Industry of employment

Manufacturing 19.8%

Education & healthcare 19.1%

Professional & management 13.6%

Retail trade 8.3%

Construction 8.0%

Wholesale trade 7.9%

Finance & real estate 6.4%

Arts, food & hospitality 6.1%

Transportation & utilities 4.1%

Public administration 4.1%

Agriculture & mining 1.3%

Other services 0.9%

Information 0.4%

Occupation

Category	%
Management, business & arts	33.3%
Service	11.8%
Sales & office	21.6%
Natural resources & construction	5.4%
Production & transportation	27.8%

Employment type

Type	%
Private sector	86.8%
Government	9.4%
Self-employed	3.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	84.8%
Carpool	3.0%
Public transit	0.0%
Walk	0.3%
Work from home	11.9%
Other means	0.0%
Avg commute (minutes)	35.2

Poverty

All people 17.3%

Under 18 years 33.8%

18 and over 12.4%

Married-couple families 2.6%

Female-led households 22.2%

Income support

Source	% of households
Social Security	36.1%
Retirement income	24.0%
Supplemental Security	8.3%
Cash public assistance	6.3%
Food stamps / SNAP	12.6%

Health indicators

Condition	%
Obesity	34.0%
High blood pressure	27.6%
High cholesterol	31.0%
Diabetes	7.9%
Heart disease	4.7%
Stroke	2.2%
Asthma	10.6%
Arthritis	22.1%
Kidney disease	2.1%
Pulmonary disease	5.8%
Cancer	5.6%

Behavior / access	%
Smoking	18.8%
Binge drinking	20.3%
No physical activity	20.4%
Less than 7 hrs sleep	35.0%
Depression	23.9%
Fair or poor health	10.8%
Poor mental health	15.3%
Poor physical health	9.0%
No health insurance	8.7%
Visited doctor (checkup)	74.9%
Visited dentist	70.6%
Cholesterol screening	90.3%
Teeth loss	10.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	208	8.9%

Disability	%
Any disability	14.5%
Under 18	5.9%
18–64 years	15.3%
65 and over	26.2%

Health insurance coverage

Type	%
Private insurance	56.7%
Public insurance	51.0%
No insurance	2.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,795	92.2%
Spanish	123	4.4%
Other Indo-European	123	4.4%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,970	98.0%
Born in same state	2,867	94.6%
Born in different state	1,305	43.0%
Foreign born	103	3.4%
Naturalized citizen	62	2.0%
Not a US citizen	62	100.0%

Ancestry

Ancestry	Count	%
Italian	460	15.2%
French	425	14%
German	308	10.2%
Arab	29	1%

Ancestry	Count	%
Irish	22	0.7%
Norwegian	17	0.6%
Polish	7	0.2%
Dutch	5	0.2%

Technology access

Metric	% of households
Computer access	31.7%
Internet access	98.0%

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

Frequently asked questions about ZIP code 06377

What city is ZIP code 06377 in?

ZIP code 06377 is primarily assigned to Sterling, Connecticut.

What county is ZIP code 06377 in?

ZIP code 06377 falls within Windham County, Connecticut.

How educated is the population of ZIP code 06377?

11% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the poverty rate in ZIP code 06377?

17% of residents in ZIP code 06377 live below the poverty line, above the national average.

Does ZIP code 06377 have a large retiree population?

36% of households in ZIP code 06377 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 06377?

ZIP code 06377 has an estimated population of 3,032 residents, with a density of 187 people per square mile.

What timezone is ZIP code 06377 in?

ZIP code 06377 observes the EST timezone.