Population 11,752 · Census ACS 2020–24
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Population and households in Cahokia
Household size in Cahokia
| Period | Cahokia | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.91 | 2.52 | 2.69 | 2.68 |
| 2010–14 | 2.98 | 2.53 | 2.71 | 2.73 |
| 2015–19 | 2.85 | 2.49 | 2.66 | 2.71 |
| 2020–24 | 3.16 | 2.46 | 2.58 | 2.65 |
| Change | +0.25 | −0.06 | −0.11 | −0.03 |
Cahokia is a place of big households: 3.16 people per home on average, compared with 2.65 nationally. Numbers like that usually point to plenty of families with kids. Household size has climbed from 2.91 in 2006–10, even as the national average fell. Only ten of the 388 Illinois cities with 5,000+ people have larger households.
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 Cahokia
| Period | Cahokia | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 31.5 | 38.5 | 37.6 | 37.7 |
| 2010–14 | 33.8 | 39.5 | 38.5 | 38.6 |
| 2015–19 | 35.5 | 40.7 | 39.6 | 39.6 |
| 2020–24 | 25.6 | 40.8 | 40.2 | 40.1 |
| Change | −5.9 | +2.3 | +2.6 | +2.3 |
With a median age of just 25.6, Cahokia is far younger than the country as a whole (40.1), a population that tilts toward young adults in their twenties. The median age has dropped from 31.5 in 2006–10, even as the national median rose. Only one other Illinois city with 5,000+ people is younger.
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 Cahokia
| Period | Cahokia | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 31.6% | 11.7% | 11.7% | 12.3% |
| 2010–14 | 27.5% | 11.5% | 11.7% | 12.3% |
| 2015–19 | 26.5% | 11.0% | 11.1% | 11.6% |
| 2020–24 | 42.0% | 11.1% | 11.3% | 11.6% |
| Change | +10.4 pts | −0.6 pts | −0.4 pts | −0.6 pts |
Single-parent households are common in Cahokia: 42.0% of all households, against 11.6% nationally. The single-parent share is up 10.4 points from 2006–10, even as the national share fell. No other Illinois city with 5,000+ people has a higher share of single-parent households.
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 Cahokia
Renters in Cahokia
| Period | Cahokia | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 39.3% | 28.3% | 30.8% | 33.3% |
| 2010–14 | 48.7% | 30.1% | 33.1% | 35.6% |
| 2015–19 | 50.5% | 31.1% | 33.9% | 36.0% |
| 2020–24 | 47.9% | 29.6% | 32.9% | 34.8% |
| Change | +8.7 pts | +1.4 pts | +2.1 pts | +1.5 pts |
Renting is far more common in Cahokia than nationally: 47.9% of households rent their homes, against 34.8%. Among homeowners, 65.4% have no mortgage at all, well above the national share of 39.8%. Since 2006–10, the renter share has risen 8.7 points, a much bigger shift than nationally. Of the 388 Illinois cities with 5,000+ people, only nine have a higher share of renters.
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 Cahokia
| Period | Cahokia | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 14.8% | 9.6% | 10.0% | 11.4% |
| 2010–14 | 24.5% | 10.1% | 10.1% | 11.4% |
| 2015–19 | 26.4% | 10.1% | 9.8% | 11.1% |
| 2020–24 | 24.8% | 8.8% | 8.1% | 9.6% |
| Change | +10.0 pts | −0.8 pts | −1.9 pts | −1.8 pts |
Vacancy is high in Cahokia: 24.8% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand. Vacancy has risen 10.0 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 Cahokia
| Period | Cahokia | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 1960 | 1972 | 1966 | 1974 |
| 2010–14 | 1958 | 1972 | 1967 | 1975 |
| 2015–19 | 1962 | 1973 | 1968 | 1977 |
| 2020–24 | 1969 | 1975 | 1970 | 1980 |
| Change | +9 | +3 | +4 | +6 |
The housing in Cahokia is old by national standards: the median home dates to 1969, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. The median year built has moved up from 1960 in 2006–10, a sign of steady new building. The newest homes are mostly in the west, the oldest in the center.
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 Cahokia
| Period | Cahokia | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | $801 | $825 | $953 | $965 |
| 2010–14 | $861 | $920 | $1,028 | $1,040 |
| 2015–19 | $926 | $1,010 | $1,165 | $1,213 |
| 2020–24 | $968 | $1,239 | $1,428 | $1,571 |
| Change | +$168 | +$414 | +$475 | +$606 |
The median renter in Cahokia pays $968 a month for rent and utilities, well below the national median of $1,571. Rents are up $168 a month from 2006–10, a 21% rise, a slower climb than the nation's. The typical renter here spends 45.3% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched. The priciest rents are in the center; the most affordable are in the northwest.
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 Cahokia
Bachelor's degrees in Cahokia
| Period | Cahokia | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.2% | 30.3% | 31.2% | 28.4% |
| 2010–14 | 8.0% | 32.1% | 32.4% | 29.6% |
| 2015–19 | 11.7% | 34.9% | 34.7% | 32.1% |
| 2020–24 | 15.6% | 38.5% | 37.7% | 35.6% |
| Change | +6.3 pts | +8.3 pts | +6.5 pts | +7.2 pts |
Fewer adults in Cahokia have a four-year degree than in the country as a whole: 15.6%, against 35.6% nationally. The share with a degree is up 6.3 points from 2006–10, as it has nationally. Only 25 of the 388 Illinois cities with 5,000+ people have a lower share of college graduates.
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 Cahokia
| Period | Cahokia | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 82.4% | 88.8% | 86.3% | 84.9% |
| 2010–14 | 83.0% | 90.5% | 87.5% | 86.1% |
| 2015–19 | 83.5% | 92.1% | 89.1% | 87.7% |
| 2020–24 | 80.0% | 93.6% | 90.3% | 89.3% |
| Change | −2.5 pts | +4.8 pts | +4.0 pts | +4.3 pts |
About one in five adults in Cahokia never finished high school, well above the national share: only 80.0% have a diploma or equivalent, against 89.3% nationally. The share with a diploma is down 2.5 points from 2006–10, even as the national rate rose. Of the 388 Illinois cities with 5,000+ people, only 15 have a lower share of high school graduates.
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 Cahokia
| Period | Cahokia | St. Louis area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 12.0% | 7.7% | 8.7% | 8.1% |
| 2010–14 | 17.9% | 8.8% | 10.2% | 9.4% |
| 2015–19 | 14.1% | 4.9% | 6.1% | 5.6% |
| 2020–24 | 6.6% | 4.3% | 6.0% | 5.4% |
| Change | −5.4 pts | −3.4 pts | −2.7 pts | −2.7 pts |
Jobs have been a little harder to find in Cahokia than nationally: unemployment was 6.6%, against 5.4%. Unemployment is down 5.4 points from 2006–10, as it has nationally. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's 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).
Cahokia 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Cahokia | 3.16 | 25.6 | 42.0% | 47.9% | 24.8% | 1969 | $968 | 15.6% | 80.0% | 6.6% |
| Sauget | 1.96 | 46.9 | 17.2% | 32.7% | 24.8% | 1968 | $829 | 12.7% | 87.2% | 7.2% |
| Dupo | 2.56 | 36.9 | 19.0% | 34.9% | 9.7% | 1970 | $963 | 13.3% | 90.1% | 5.2% |
| East Carondelet | 2.63 | 41.8 | 9.1% | 13.1% | 16.3% | 1989 | $1,066 | 19.6% | 95.6% | 10.6% |
| Alorton | 2.27 | 42.5 | 25.8% | 54.0% | 26.4% | 1981 | $645 | 8.4% | 73.3% | 6.4% |
| Centreville | 2.81 | 36.5 | 24.2% | 47.9% | 29.3% | 1962 | $973 | 16.7% | 85.3% | 16.0% |
| East St. Louis | 2.76 | 44.5 | 22.5% | 37.7% | 32.2% | 1958 | $944 | 18.5% | 85.9% | 16.2% |
| Washington Park | 2.55 | 33.2 | 12.6% | 18.3% | 33.2% | 1966 | $771 | 9.4% | 77.7% | 14.4% |
| Bella Villa | 2.49 | 33.4 | 18.3% | 20.4% | 7.2% | 1954 | $1,169 | 23.4% | 87.9% | 1.8% |
| Brooklyn | 2.60 | 30.1 | 30.8% | 57.2% | 14.0% | 1965 | $895 | 26.9% | 97.6% | 13.3% |
| Lemay | 2.60 | 38.5 | 15.0% | 24.2% | 15.8% | 1954 | $906 | 20.2% | 86.6% | 2.7% |
All figures 2020–24.
Cities with similar populations: Tuttle, OK · Ellettsville, IN · Evanston, WY · Falling Waters, WV · Fallston, MD · Victoria, MN · Vermillion, SD · Farmington, MI · Venus, TX · Vashon, WA
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 Cahokia. 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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