06840 ZIP Code — New Canaan, CT

Fairfield County, Connecticut

ZIP code 06840 is located in New Canaan, Connecticut, within Fairfield County. It covers approximately 22.18 square miles and serves a population of 20,709 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 203/475.

About ZIP code 06840

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1960s, giving the area an established character. Median home value is $1,434,400. Owner-occupancy is high at 85%, well above the national average.

The gap between median ($250,001) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 2% is below the national average.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. An above-average commute of 40 minutes suggests many residents work outside the immediate area. Remote work is prevalent — 25% of workers work from home.

Educational attainment is high — 82% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 06840 reflects a community defined by a highly educated population, high homeownership, and a high rate of remote workers.

20,709

population

22.18

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

06840 ZIP code map

Cities in ZIP code 06840

Below are the cities the US Postal Service accepts for ZIP code 06840. Using any city not on this list may result in mail delivery delays.

City	Status
New Canaan	Preferred

Nearby ZIP codes

06850 Norwalk (4 mi) 06903 Stamford (4.2 mi) 06897 Wilton (4.5 mi) 06907 Stamford (4.6 mi) 10576 Pound Ridge (4.7 mi) 06851 Norwalk (5.3 mi) 06905 Stamford (5.7 mi) 06857 Norwalk (5.8 mi) 06860 Norwalk (5.8 mi) 06858 Norwalk (5.8 mi) 06820 Darien (6.1 mi) 06906 Stamford (6.3 mi)

Demographics updated 05/2026

Population
Total population	20,709
Population density	934 / sq mi
State FIPS	09
County FIPS	001

Geography
Land area	22.18 sq mi
Water area	0.33 sq mi
Latitude	41.1624
Longitude	-73.5021
Timezone	Eastern (ET)
Area code	203/475

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	11.8%	27.3%	32.0%
$50k – $100k	12.8%	23.7%	27.7%
$100k – $200k	25.3%	26.8%	27.1%
Over $200k	50.1%	22.2%	13.2%

Demographics & statistics

20,709

Population

934

People per sq mi

43.5

Median age

$250,001

Median household income

$138,453

Per capita income

$1,434,400

Median home value

$3,278

Median monthly rent

85.0%

Home ownership

2.4%

Poverty rate

4.9%

Unemployment

6,667

Housing units

82.3%

Bachelor's or higher

Age distribution

Male Female

491

Under 5

560

689

5–9

784

874

10–14

995

961

15–19

1,094

504

20–24

574

467

25–34

532

1,084

35–44

1,234

1,537

45–54

1,751

880

55–59

1,002

672

60–64

765

794

65–74

905

471

75–84

536

259

85+

294

← Male

Female →

Age summary

Group	Count	%
Under 18	5,660	27.3%
18 and over	15,049	72.7%
65 and over	3,259	15.7%
Median age	43.5 years

Race & ethnicity

White 82.4%

Asian 6.2%

Two or more races 5.4%

Hispanic or Latino 4%

Black or African American 1.6%

Other race 0.4%

Group	Count	%
White	17,781	82.4%
Asian	1,336	6.2%
Two or more races	1,169	5.4%
Hispanic or Latino	863	4%
Black or African American	335	1.6%
Other race	82	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	11.8%	27.3%	32.0%
$50k – $100k	12.8%	23.7%	27.7%
$100k – $200k	25.3%	26.8%	27.1%
Over $200k	50.1%	22.2%	13.2%

Under $10k 1.2%

$10k–$15k 1.1%

$15k–$25k 1.1%

$25k–$35k 1.4%

$35k–$50k 4.0%

$50k–$75k 6.2%

$75k–$100k 4.7%

$100k–$150k 10.8%

$150k–$200k 9.9%

$200k+ 59.6%

Range	% of households
Under $10k	1.2%
$10k–$15k	1.1%
$15k–$25k	1.1%
$25k–$35k	1.4%
$35k–$50k	4.0%
$50k–$75k	6.2%
$75k–$100k	4.7%
$100k–$150k	10.8%
$150k–$200k	9.9%
$200k+	59.6%
Median income	$250,001

Housing

Home values

Under $50k 0.6%

$50k–$100k 0.2%

$100k–$150k 0.3%

$150k–$200k 0.6%

$200k–$300k 1.4%

$300k–$500k 4.5%

$500k–$1M 21.1%

$1M+ 71.3%

Housing overview

Metric	Value
Median home value	$1,434,400
Median rent / month	$3,278
Owner occupied	85.0%
Renter occupied	15.0%
Vacant	8.8%
Single-family detached	74.2%
Large apartment buildings	2.4%
Mobile homes	0.0%
Median rooms	10.0
Avg household size (owned)	2.99

Year built

Era	%
2020 or later	0.0%
2010–2019	6.7%
2000–2009	10.9%
1990–1999	8.7%
1980–1989	6.4%
1970–1979	10.0%
1960–1969	19.7%
1950–1959	13.8%
1940–1949	5.3%
1939 or earlier	18.5%

Bedrooms

Size	% of units
No bedroom (studio)	1.1%
1 bedroom	3.7%
2 bedrooms	9.9%
3 bedrooms	22.8%
4 bedrooms	33.1%
5+ bedrooms	29.4%

Vehicles per household

Vehicles	% of households
No vehicle	3.1%
1 vehicle	22.4%
2 vehicles	47.5%
3 or more	27.0%

Heating fuel

Fuel type	%
Utility gas	9.2%
Electricity	13.1%
Propane / LP gas	9.4%
Fuel oil	66.7%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	4,900	69.6%
Cohabiting couple	123	1.7%
Male householder, no spouse	531	7.5%
Female householder, no spouse	1,485	21.1%
Households with children under 18	2,873	40.8%
Households with seniors (65+)	2,372	33.7%
Average household size	2.93

Marital status

Status	Male	Female
Never married	23.9%	24.8%
Married	71.1%	56.3%
Separated	0.4%	0.8%
Widowed	1.0%	6.8%
Divorced	3.6%	11.4%

Education

Less than 9th grade 0.6%

Some HS, no diploma 0.7%

HS graduate 5.9%

Some college, no degree 7.7%

Associate's degree 2.9%

Bachelor's degree 43.1%

Graduate / professional 39.2%

Metric	%
HS diploma or higher	98.8%
Bachelor's or higher	82.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	531	8.3%
Kindergarten	220	3.4%
Elementary school	2,848	44.4%
High school	1,767	27.5%
College / grad school	1,053	16.4%

Employment

Industry of employment

Finance & real estate 32.0%

Professional & management 21.6%

Education & healthcare 14.5%

Retail trade 8.0%

Manufacturing 7.2%

Arts, food & hospitality 4.7%

Information 2.9%

Construction 2.6%

Other services 2.5%

Wholesale trade 1.6%

Public administration 1.5%

Transportation & utilities 1.1%

Occupation

Category	%
Management, business & arts	68.7%
Service	6.3%
Sales & office	21.8%
Natural resources & construction	1.3%
Production & transportation	2.0%

Employment type

Type	%
Private sector	88.1%
Government	6.1%
Self-employed	5.7%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	50.1%
Carpool	3.2%
Public transit	17.2%
Walk	4.0%
Work from home	24.8%
Other means	0.7%
Avg commute (minutes)	39.8

Poverty

All people 2.4%

Under 18 years 0.9%

18 and over 2.9%

Married-couple families 2.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	27.8%
Retirement income	21.0%
Supplemental Security	2.0%
Cash public assistance	0.8%
Food stamps / SNAP	2.7%

Health indicators

Condition	%
Obesity	20.2%
High blood pressure	27.1%
High cholesterol	33.2%
Diabetes	6.4%
Heart disease	5.0%
Stroke	2.1%
Asthma	8.2%
Arthritis	21.0%
Kidney disease	2.3%
Pulmonary disease	3.9%
Cancer	8.1%

Behavior / access	%
Smoking	7.3%
Binge drinking	15.7%
No physical activity	12.0%
Less than 7 hrs sleep	27.1%
Depression	16.2%
Fair or poor health	6.9%
Poor mental health	10.3%
Poor physical health	6.7%
No health insurance	5.8%
Visited doctor (checkup)	76.4%
Visited dentist	81.5%
Cholesterol screening	95.6%
Teeth loss	4.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	641	4.3%

Disability	%
Any disability	6.9%
Under 18	0.9%
18–64 years	4.9%
65 and over	25.2%

Health insurance coverage

Type	%
Private insurance	88.5%
Public insurance	18.2%
No insurance	1.6%
Uninsured under 19	1.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	19,658	94.9%
Spanish	420	2.1%
Other Indo-European	54	0.3%
Asian & Pacific Islander	147	0.7%
Other languages	219	1.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	18,244	88.1%
Born in same state	17,625	85.1%
Born in different state	7,107	34.3%
Foreign born	619	3.0%
Naturalized citizen	2,465	11.9%
Not a US citizen	1,624	65.9%

Ancestry

Ancestry	Count	%
Italian	4,540	21.9%
French	3,351	16.2%
Arab	630	3%
English	199	1%
German	194	0.9%

Ancestry	Count	%
Dutch	154	0.7%
Irish	149	0.7%
Polish	97	0.5%
Norwegian	24	0.1%

Technology access

Metric	% of households
Computer access	34.0%
Internet access	98.5%

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

Frequently asked questions about ZIP code 06840

What city is ZIP code 06840 in?

ZIP code 06840 is primarily assigned to New Canaan, Connecticut.

What county is ZIP code 06840 in?

ZIP code 06840 falls within Fairfield County, Connecticut.

How educated is the population of ZIP code 06840?

82% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 06840 mostly owner-occupied?

85% of occupied units in ZIP code 06840 are owner-occupied, well above the national average.

What is the median household income in ZIP code 06840?

The median household income in ZIP code 06840 is $250,001, above the national median of ~$75,000.

What is the typical home value in ZIP code 06840?

The median home value in ZIP code 06840 is $1,434,400.

What timezone is ZIP code 06840 in?

ZIP code 06840 observes the EST timezone.