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ZIP code

06820

Darien, CT

STANDARD

06820 covers Darien in Fairfield County, with 21,683 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

ACS 2023 population

21,683

Median household income

$250,000+

Median home value

$1,728,400

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 06820. Methodology

ZIP code map of 06820

Census ZCTA boundary for ZIP 06820 in Darien, Connecticut
Census ZCTA boundary for ZIP 06820 in Darien, Connecticut. A ZCTA is not the same as a USPS ZIP code. Boundaries: U.S. Census Bureau. Methodology · Data sources
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About ZIP code 06820

Type

STANDARD

City

Darien

County

Fairfield County

Timezone

America/New_York

Area codes

203, 475

Land area

12.7 sq mi

Water area

2.18 sq mi

Households

7,567

Median gross rent

$3,500+

More enterprise fields

Timezone
America/New_York
Area Codes
203, 475
World Region
NA
Country
US

Commercial ZIP directory · not ACS

Commercial ZIP directory population_count for ZCTA 06820. Not ACS. Methodology

People in 06820

Race

  • White18,316
  • Black or African American163
  • American Indian or Alaska Native23
  • Asian1,205
  • Native Hawaiian and Pacific Islander4
  • Other race282
  • Two or more races1,506

Hispanic or Latino (any race): 1,234

Age

  • Under 103,266
  • 10 to 194,218
  • 20 to 291,499
  • 30 to 391,934
  • 40 to 493,314
  • 50 to 593,350
  • 60 to 692,065
  • 70 to 791,104
  • 80 and older749

Income and housing in 06820

Poverty rate

6.0%

Median earnings

$117,964

Median household income

$250,000+

Median home value

$1,728,400

Median gross rent

$3,500+

Education

  • High school graduate98.4%
  • Bachelor's degree85.6%
  • Graduate degree38.2%

Places covering 06820

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.

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.

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

42.4% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 06820

IRS populationACS population
23,72811,864020052023

Hover the chart or read the table below (Year | ACS | IRS).

Population history. Year | ACS population | IRS population. ACS and IRS are separate series. Blank cells mean that source did not publish a count for the year.
YearACS populationIRS population
200521,858
200620,252
200720,651
200821,091
200920,949
201021,499
201120,58021,608
201220,75821,660
201320,92521,680
201421,19021,280
201521,39221,660
201621,51921,640
201721,74221,670
201821,75921,290
201921,74221,450
202021,75221,540
202121,48521,710
202221,57121,970
202321,683

ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.

ZIP codes near 06820

12 nearest ZIP centroids (any distance)

  1. 06906Stamford2.2 miPop 9,472 · Income $91,710
  2. 06853Norwalk2.3 miPop 3,229 · Income $250,000+
  3. 06907Stamford2.7 miPop 9,071 · Income $104,526
  4. 06854Norwalk2.9 miPop 31,753 · Income $86,399
  5. 06905Stamford3.4 miPop 20,126 · Income $132,730
  6. 06901Stamford3.4 miPop 10,506 · Income $87,524
  7. 06902Stamford3.5 miPop 72,915 · Income $92,527
  8. 06910Stamford3.8 miPop — · Income —
  9. 06850Norwalk4.0 miPop 19,774 · Income $121,910
  10. 06855Norwalk4.7 miPop 8,028 · Income $102,247
  11. 06840New Canaan5.9 miPop 20,704 · Income $250,000+
  12. 06851Norwalk5.9 miPop 28,591 · Income $106,978

ZIP centroids within 2 miles

No other ZIP codes within 2 miles of 06820, measured by Census internal-point centroids. Try a wider radius.

ZIPs within 2 miles of this place

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06820 Darien, CT

Looking up ZIP codes within 2 miles of 06820 Darien, CT, measured by centroid distance.

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ZIP code 06820 FAQ

What city is ZIP code 06820 in?
06820 is in Darien, CT.
What county is 06820 in?
06820 is in Fairfield County.
What is the median household income in 06820?
The median household income in 06820 is $250,000+.
Which ZIP codes are near 06820?
Use the radius tool on this page to list ZIP codes within a chosen distance of 06820.