Population 39,503 · Census ACS 2020–24
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Population and households in Greenwich
Household size in Greenwich
| Period | Greenwich | Bridgeport area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.64 | 2.71 | 2.57 | 2.68 |
| 2010–14 | 2.76 | 2.80 | 2.61 | 2.73 |
| 2015–19 | 2.74 | 2.76 | 2.57 | 2.71 |
| 2020–24 | 2.72 | 2.75 | 2.55 | 2.65 |
| Change | +0.08 | +0.04 | −0.02 | −0.03 |
Households in Greenwich average 2.72 people, about the same as the country as a whole (2.65). Since 2006–10, household size has crept up from 2.64, even as the national average fell. Households are largest in the northwest and smallest in the east.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Greenwich
| Period | Greenwich | Bridgeport area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 44.1 | 39.4 | 40.0 | 37.7 |
| 2010–14 | 43.7 | 40.3 | 41.0 | 38.6 |
| 2015–19 | 44.9 | 41.5 | 42.0 | 39.6 |
| 2020–24 | 45.2 | 41.6 | 42.1 | 40.1 |
| Change | +1.1 | +2.2 | +2.1 | +2.3 |
Greenwich skews older: half of its residents are older than 45.2, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. Since 2006–10, the median age has climbed from 44.1, in line with the national trend.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Greenwich
| Period | Greenwich | Bridgeport area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.9% | 10.1% | 11.2% | 12.3% |
| 2010–14 | 8.1% | 10.8% | 11.6% | 12.3% |
| 2015–19 | 7.6% | 10.1% | 10.8% | 11.6% |
| 2020–24 | 9.4% | 10.3% | 11.4% | 11.6% |
| Change | +0.5 pts | +0.2 pts | +0.2 pts | −0.6 pts |
Single parents head about one in ten households in Greenwich (9.4%), below the national share of 11.6%. The picture is much the same across the Bridgeport area. Compared with other Connecticut cities, though, Greenwich has a higher share of single-parent households than most.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Greenwich
Renters in Greenwich
| Period | Greenwich | Bridgeport area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 31.7% | 29.3% | 30.8% | 33.3% |
| 2010–14 | 38.2% | 31.5% | 32.7% | 35.6% |
| 2015–19 | 41.0% | 32.9% | 33.9% | 36.0% |
| 2020–24 | 34.8% | 34.0% | 33.5% | 34.8% |
| Change | +3.1 pts | +4.6 pts | +2.7 pts | +1.5 pts |
Just over a third of households in Greenwich rent their homes (34.8%), the same as the national share. Among homeowners, 40.7% have no mortgage at all, about the same as nationally. Rentals cluster in the south; owners are most common in the north. The renter share is up 3.1 points from 2006–10, as it has nationally.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Greenwich
| Period | Greenwich | Bridgeport area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.4% | 8.3% | 8.8% | 11.4% |
| 2010–14 | 10.9% | 8.8% | 9.5% | 11.4% |
| 2015–19 | 11.8% | 9.4% | 10.2% | 11.1% |
| 2020–24 | 13.3% | 7.0% | 7.9% | 9.6% |
| Change | +3.0 pts | −1.4 pts | −0.9 pts | −1.8 pts |
More homes sit empty in Greenwich than nationally: 13.3%, against 9.6%. The count includes vacation homes and homes between owners or tenants, not just abandoned ones. Vacancy has risen 3.0 points since 2006–10, even as the national rate fell.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Greenwich
| Period | Greenwich | Bridgeport area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 1956 | 1961 | 1963 | 1974 |
| 2010–14 | 1958 | 1962 | 1964 | 1975 |
| 2015–19 | 1962 | 1964 | 1964 | 1977 |
| 2020–24 | 1962 | 1967 | 1967 | 1980 |
| Change | +6 | +6 | +4 | +6 |
Greenwich is a place of older homes: half were built before 1962, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. The median year built has moved up from 1956 in 2006–10, a sign of steady new building. Newer construction is concentrated in the northwest, while the center has the oldest housing.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Greenwich
| Period | Greenwich | Bridgeport area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,649 | $1,394 | $1,127 | $965 |
| 2010–14 | $1,749 | $1,488 | $1,218 | $1,040 |
| 2015–19 | $1,961 | $1,784 | $1,380 | $1,213 |
| 2020–24 | $2,809 | $2,167 | $1,702 | $1,571 |
| Change | +$1,160 | +$773 | +$575 | +$606 |
A typical rental in Greenwich costs $2,809 a month with utilities, well above the national median of $1,571. Rent has climbed $1,160 a month since 2006–10, up 70%, faster than rents rose nationally. Rent takes 33.1% of the typical renter's income, well over the 30% mark often used to define affordable rent, so many renters here are stretched. Rents run highest in the northwest and lowest in the east.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Greenwich
Bachelor's degrees in Greenwich
| Period | Greenwich | Bridgeport area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 59.8% | 43.2% | 35.5% | 28.4% |
| 2010–14 | 63.4% | 45.5% | 37.0% | 29.6% |
| 2015–19 | 62.7% | 47.9% | 39.2% | 32.1% |
| 2020–24 | 68.8% | 50.4% | 42.3% | 35.6% |
| Change | +9.1 pts | +7.2 pts | +6.8 pts | +7.2 pts |
Greenwich is highly educated: about seven in ten adults 25 and older (68.8%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree has risen 9.1 points since 2006–10, mirroring the country. College graduates are most concentrated in the north and least in the southwest.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Greenwich
| Period | Greenwich | Bridgeport area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 93.2% | 87.7% | 88.1% | 84.9% |
| 2010–14 | 94.6% | 88.8% | 89.2% | 86.1% |
| 2015–19 | 95.2% | 89.8% | 90.4% | 87.7% |
| 2020–24 | 94.9% | 89.7% | 91.2% | 89.3% |
| Change | +1.7 pts | +2.0 pts | +3.1 pts | +4.3 pts |
High school completion is high in Greenwich: 94.9% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. Since 2006–10, the share with a diploma has risen 1.7 points, mirroring the country.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Greenwich
| Period | Greenwich | Bridgeport area | Connecticut | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.9% | 7.6% | 7.8% | 8.1% |
| 2010–14 | 7.5% | 9.6% | 9.7% | 9.4% |
| 2015–19 | 5.0% | 6.5% | 6.2% | 5.6% |
| 2020–24 | 6.3% | 5.8% | 5.6% | 5.4% |
| Change | +0.4 pts | −1.9 pts | −2.1 pts | −2.7 pts |
Jobs have been a little harder to find in Greenwich than nationally: unemployment was 6.3%, against 5.4%. Greenwich has higher unemployment than at least four in five Connecticut cities. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Greenwich compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Greenwich | 2.72 | 45.2 | 9.4% | 34.8% | 13.3% | 1962 | $2,809 | 68.8% | 94.9% | 6.3% |
| Rye Brook | 2.85 | 43.3 | 10.2% | 14.4% | 4.4% | 1968 | $2,440 | 79.2% | 97.0% | 6.4% |
| Cos Cob | 2.78 | 39.9 | 10.2% | 30.4% | 5.4% | 1963 | $3,093 | 74.8% | 96.0% | 5.3% |
| Port Chester | 2.92 | 40.6 | 16.4% | 53.7% | 4.2% | 1956 | $2,121 | 35.4% | 77.8% | 5.5% |
| Riverside | 3.09 | 41.0 | 6.5% | 19.4% | 4.2% | 1963 | $2,794 | 78.6% | 97.8% | 5.3% |
| Purchase | 3.21 | 31.7 | 5.1% | 24.3% | 9.6% | 1986 | $2,934 | 65.3% | 98.6% | 9.1% |
| Old Greenwich | 2.98 | 40.7 | 7.3% | 13.9% | 6.8% | 1967 | $3,429 | 83.9% | 98.6% | 4.5% |
| Harrison | 2.96 | 40.4 | 9.5% | 41.4% | 7.5% | 1962 | $2,768 | 58.8% | 93.2% | 4.5% |
| Rye | 2.95 | 44.2 | 8.3% | 29.5% | 9.3% | 1958 | $2,740 | 81.1% | 96.5% | 5.7% |
| Stamford | 2.60 | 39.3 | 10.3% | 51.2% | 6.8% | 1974 | $2,458 | 50.9% | 88.7% | 4.9% |
| West Harrison | 2.74 | 38.0 | 14.8% | 61.3% | 2.8% | 1957 | $2,270 | 49.3% | 88.0% | 5.0% |
All figures 2020–24.
Cities with similar populations: Willowbrook, CA · College Park, MD · Claremont, CA · Old Bridge, NJ · Rome, NY · Rockledge, FL · Ringgold, GA · Port Huron, MI · Perry Hall, MD · Peachtree City, GA
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Greenwich. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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