Population 48,944 · Census ACS 2020–24
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Median age by neighborhoodHistory and comparison ↓︎
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Population and households in Quincy
Household size in Quincy
| Period | Quincy | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 2.36 | 2.69 | 2.68 |
| 2010–14 | 2.42 | 2.71 | 2.73 |
| 2015–19 | 2.32 | 2.66 | 2.71 |
| 2020–24 | 2.27 | 2.58 | 2.65 |
| Change | −0.10 | −0.11 | −0.03 |
Households in Quincy are small: just 2.27 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Since 2006–10, household size has dropped from 2.36, a much bigger shift than nationally.
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 Quincy
| Period | Quincy | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 39.7 | 37.6 | 37.7 |
| 2010–14 | 40.9 | 38.5 | 38.6 |
| 2015–19 | 43.5 | 39.6 | 39.6 |
| 2020–24 | 41.9 | 40.2 | 40.1 |
| Change | +2.2 | +2.6 | +2.3 |
Quincy skews a little older than the country: its median age is 41.9, against 40.1 nationally. Since 2006–10, the median age has climbed from 39.7, as it has nationally. Residents skew youngest in the center and oldest in the northeast.
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 Quincy
| Period | Quincy | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 11.3% | 11.7% | 12.3% |
| 2010–14 | 11.3% | 11.7% | 12.3% |
| 2015–19 | 10.5% | 11.1% | 11.6% |
| 2020–24 | 11.1% | 11.3% | 11.6% |
| Change | −0.3 pts | −0.4 pts | −0.6 pts |
Single parents head just over one in ten households in Quincy (11.1%), close to the national share of 11.6%. The single-parent share has barely moved since 2006–10, while the national share fell.
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 Quincy
Renters in Quincy
| Period | Quincy | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 28.9% | 30.8% | 33.3% |
| 2010–14 | 32.3% | 33.1% | 35.6% |
| 2015–19 | 31.3% | 33.9% | 36.0% |
| 2020–24 | 31.8% | 32.9% | 34.8% |
| Change | +2.9 pts | +2.1 pts | +1.5 pts |
Nearly a third of households in Quincy rent their homes (31.8%), close to the national share of 34.8%. Among homeowners, 43.3% have no mortgage at all, above the national share of 39.8%. Rentals cluster in the west; owners are most common in the northeast. Since 2006–10, the renter share has risen 2.9 points, 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 Quincy
| Period | Quincy | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 8.8% | 10.0% | 11.4% |
| 2010–14 | 10.1% | 10.1% | 11.4% |
| 2015–19 | 9.8% | 9.8% | 11.1% |
| 2020–24 | 7.9% | 8.1% | 9.6% |
| Change | −0.8 pts | −1.9 pts | −1.8 pts |
Fewer homes sit empty in Quincy than nationally: 7.9%, against 9.6% for the U.S. Illinois as a whole looks much the same. Since 2006–10, vacancy has edged down 0.8 points, in line with the national trend.
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 Quincy
| Period | Quincy | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 1961 | 1966 | 1974 |
| 2010–14 | 1963 | 1967 | 1975 |
| 2015–19 | 1963 | 1968 | 1977 |
| 2020–24 | 1964 | 1970 | 1980 |
| Change | +3 | +4 | +6 |
Quincy is a place of older homes: half were built before 1964, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. Newer construction is concentrated in the southeast, 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 Quincy
| Period | Quincy | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | $672 | $953 | $965 |
| 2010–14 | $664 | $1,028 | $1,040 |
| 2015–19 | $771 | $1,165 | $1,213 |
| 2020–24 | $973 | $1,428 | $1,571 |
| Change | +$301 | +$475 | +$606 |
A typical rental in Quincy costs $973 a month with utilities, well below the national median of $1,571. Rent has climbed $301 a month since 2006–10, up 45%, a slower climb than the nation's. Rent takes 29.3% of the typical renter's income, just under the 30% mark often used to define affordable rent. The priciest rents are in the northeast; the most affordable are in the southwest.
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 Quincy
Bachelor's degrees in Quincy
| Period | Quincy | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 23.7% | 31.2% | 28.4% |
| 2010–14 | 23.4% | 32.4% | 29.6% |
| 2015–19 | 26.0% | 34.7% | 32.1% |
| 2020–24 | 29.4% | 37.7% | 35.6% |
| Change | +5.8 pts | +6.5 pts | +7.2 pts |
About three in ten adults 25 and older in Quincy (29.4%) have a bachelor's degree or higher, a little below the national share of 35.6%. The share with a degree is up 5.8 points from 2006–10, as it has nationally. College graduates are most concentrated in the southeast and least in the west.
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 Quincy
| Period | Quincy | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 89.7% | 86.3% | 84.9% |
| 2010–14 | 90.8% | 87.5% | 86.1% |
| 2015–19 | 92.6% | 89.1% | 87.7% |
| 2020–24 | 93.8% | 90.3% | 89.3% |
| Change | +4.1 pts | +4.0 pts | +4.3 pts |
High school completion in Quincy is above the national rate: 93.8% of adults have a diploma or equivalent, against 89.3%. The share with a diploma has risen 4.1 points since 2006–10, in line with the national trend.
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 Quincy
| Period | Quincy | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 6.2% | 8.7% | 8.1% |
| 2010–14 | 7.3% | 10.2% | 9.4% |
| 2015–19 | 4.4% | 6.1% | 5.6% |
| 2020–24 | 4.1% | 6.0% | 5.4% |
| Change | −2.0 pts | −2.7 pts | −2.7 pts |
Jobs have been a little easier to find in Quincy than nationally: unemployment was 4.1%, against 5.4%. Unemployment is down 2.0 points from 2006–10, as it has nationally. 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).
Quincy 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Quincy | 2.27 | 41.9 | 11.1% | 31.8% | 7.9% | 1964 | $973 | 29.4% | 93.8% | 4.1% |
| West Quincy | 2.87 | 44.9 | 1.8% | 9.1% | 11.5% | 1970 | $950 | 46.3% | 92.4% | 0.0% |
| Fowler | 2.38 | 50.2 | 5.7% | 6.0% | 11.1% | 1981 | $1,263 | 35.4% | 98.4% | 1.1% |
| Taylor | 2.84 | 44.1 | 2.0% | 10.2% | 12.1% | 1971 | $947 | 43.9% | 92.6% | 0.4% |
| Payson | 2.60 | 42.6 | 9.7% | 13.8% | 12.4% | 1975 | $792 | 24.6% | 95.4% | 1.0% |
| La Grange | 2.99 | 40.2 | 7.7% | 21.1% | 26.0% | 1968 | $738 | 13.5% | 92.2% | 2.1% |
| Ursa | 2.26 | 43.9 | 9.3% | 14.3% | 2.6% | 1958 | $942 | 19.5% | 95.2% | 3.9% |
| Paloma | 2.54 | 37.5 | 5.0% | 16.8% | 4.5% | 1972 | $1,110 | 26.4% | 96.8% | 5.0% |
| Mendon | 2.55 | 38.2 | 9.5% | 19.6% | 6.2% | 1966 | $761 | 15.8% | 94.9% | 5.0% |
| Palmyra | 2.57 | 39.5 | 12.7% | 24.8% | 13.4% | 1974 | $773 | 28.8% | 94.2% | 2.5% |
| Columbus | 2.61 | 37.9 | 12.7% | 2.9% | 7.7% | 1992 | $992 | 27.4% | 98.1% | 1.6% |
All figures 2020–24.
Cities with similar populations: Antelope, CA · Zephyrhills, FL · Sherman, TX · Martinez, CA · Everett, MA · Euclid, OH · Dacula, GA · Country Club, FL · Cerritos, CA · Converse, TX
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 Quincy. 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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