ZIP code
06840
New Canaan, CT
06840 covers New Canaan in Fairfield County, with 20,704 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 06840. Methodology
ZIP code map of 06840
About ZIP code 06840
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 06840. Not ACS. Methodology
People in 06840
Race
- White17,385
- Black or African American261
- American Indian or Alaska Native20
- Asian1,169
- Native Hawaiian and Pacific Islander4
- Other race264
- Two or more races1,509
Hispanic or Latino (any race): 1,116
Age
- Under 102,680
- 10 to 193,916
- 20 to 291,478
- 30 to 391,514
- 40 to 493,005
- 50 to 593,313
- 60 to 692,379
- 70 to 791,357
- 80 and older970
Income and housing in 06840
Education
- High school graduate98.4%
- Bachelor's degree82.8%
- Graduate degree39.1%
Places covering 06840
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- New Canaan30.2%
- Norwalk0.0%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Fairfield County100.0%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
69.8% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 06840
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 20,818 | |
| 2006 | 19,021 | |
| 2007 | 19,372 | |
| 2008 | 19,479 | |
| 2009 | 19,518 | |
| 2010 | 19,651 | |
| 2011 | 19,642 | 20,101 |
| 2012 | 19,794 | 19,950 |
| 2013 | 19,938 | 19,990 |
| 2014 | 20,073 | 19,600 |
| 2015 | 20,219 | 19,690 |
| 2016 | 20,248 | 19,740 |
| 2017 | 20,357 | 19,770 |
| 2018 | 20,273 | 19,340 |
| 2019 | 20,276 | 19,800 |
| 2020 | 20,249 | 19,860 |
| 2021 | 20,672 | 20,090 |
| 2022 | 20,709 | 20,370 |
| 2023 | 20,704 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 06840
12 nearest ZIP centroids (any distance)
- 06850Norwalk3.7 miPop 19,774 · Income $121,910
- 06903Stamford4.1 miPop 13,630 · Income $203,438
- 06907Stamford4.2 miPop 9,071 · Income $104,526
- 06897Wilton4.7 miPop 18,439 · Income $227,165
- 06851Norwalk5.4 miPop 28,591 · Income $106,978
- 06905Stamford5.5 miPop 20,126 · Income $132,730
- 06910Stamford5.5 miPop — · Income —
- 10576Pound Ridge5.7 miPop 4,904 · Income $227,344
- 06820Darien5.9 miPop 21,683 · Income $250,000+
- 06854Norwalk6.1 miPop 31,753 · Income $86,399
- 06906Stamford6.2 miPop 9,472 · Income $91,710
- 10590South Salem6.9 miPop 7,314 · Income $198,563
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 06840, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 06840 FAQ
- What city is ZIP code 06840 in?
- 06840 is in New Canaan, CT.
- What county is 06840 in?
- 06840 is in Fairfield County.
- What is the median household income in 06840?
- The median household income in 06840 is $250,000+.
- Which ZIP codes are near 06840?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 06840.