ZIP code
06870
Old Greenwich, CT
06870 covers Old Greenwich in Fairfield County, with 7,903 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 06870. Methodology
ZIP code map of 06870
About ZIP code 06870
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 06870. Not ACS. Methodology
People in 06870
Race
- White6,126
- Black or African American61
- American Indian or Alaska Native11
- Asian610
- Other race122
- Two or more races790
Hispanic or Latino (any race): 543
Age
- Under 101,112
- 10 to 191,347
- 20 to 29562
- 30 to 39638
- 40 to 491,177
- 50 to 591,255
- 60 to 69894
- 70 to 79444
- 80 and older291
Income and housing in 06870
Education
- High school graduate98.9%
- Bachelor's degree83.3%
- Graduate degree40.1%
Places covering 06870
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.
- Old Greenwich89.2%
- Riverside5.8%
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
5.0% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 06870
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 7,225 | |
| 2006 | 6,805 | |
| 2007 | 7,051 | |
| 2008 | 7,116 | |
| 2009 | 7,243 | |
| 2010 | 7,381 | |
| 2011 | 7,143 | 7,328 |
| 2012 | 7,268 | 7,350 |
| 2013 | 7,179 | 7,210 |
| 2014 | 7,071 | 7,100 |
| 2015 | 7,386 | 7,190 |
| 2016 | 7,662 | 7,180 |
| 2017 | 7,518 | 7,180 |
| 2018 | 7,506 | 7,230 |
| 2019 | 7,642 | 7,200 |
| 2020 | 7,831 | 7,270 |
| 2021 | 7,907 | 7,130 |
| 2022 | 8,096 | 7,350 |
| 2023 | 7,903 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 06870
12 nearest ZIP centroids (any distance)
- 06878Riverside0.8 miPop 8,446 · Income $250,000+
- 06807Cos Cob2.5 miPop 7,667 · Income $194,492
- 06901Stamford2.6 miPop 10,506 · Income $87,524
- 06902Stamford2.8 miPop 72,915 · Income $92,527
- 06830Greenwich2.9 miPop 24,919 · Income $146,841
- 06906Stamford4.2 miPop 9,472 · Income $91,710
- 06905Stamford4.6 miPop 20,126 · Income $132,730
- 06910Stamford4.7 miPop — · Income —
- 10573Port Chester5.6 miPop 40,982 · Income $110,612
- 06820Darien5.9 miPop 21,683 · Income $250,000+
- 06907Stamford6.0 miPop 9,071 · Income $104,526
- 06831Greenwich6.4 miPop 14,656 · Income $218,785
ZIP centroids within 2 miles
| ZIP | City | State | Distance (miles) | ACS population | Median income |
|---|---|---|---|---|---|
| 06878 | Riverside | CT | 0.8 mi | 8,446 | $250,000+ |
ZIPs within 2 miles of this place
Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.
ZIP code 06870 FAQ
- What city is ZIP code 06870 in?
- 06870 is in Old Greenwich, CT.
- What county is 06870 in?
- 06870 is in Fairfield County.
- What is the median household income in 06870?
- The median household income in 06870 is $227,727.
- Which ZIP codes are near 06870?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 06870.