Population 6,122 · Census ACS 2020–24
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Population and households in Eureka
Household size in Eureka
| Period | Eureka | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 2.55 | 2.69 | 2.68 |
| 2010–14 | 2.51 | 2.71 | 2.73 |
| 2015–19 | 2.52 | 2.66 | 2.71 |
| 2020–24 | 2.27 | 2.58 | 2.65 |
| Change | −0.28 | −0.11 | −0.03 |
Households in Eureka 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. Household size has dropped from 2.55 in 2006–10, 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 Eureka
| Period | Eureka | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 39.4 | 37.6 | 37.7 |
| 2010–14 | 43.0 | 38.5 | 38.6 |
| 2015–19 | 37.3 | 39.6 | 39.6 |
| 2020–24 | 41.4 | 40.2 | 40.1 |
| Change | +1.9 | +2.6 | +2.3 |
At 41.4, the median age in Eureka is close to the national median of 40.1, so its age mix looks much like the country's. The median age has climbed from 39.4 in 2006–10, as it has nationally. Residents skew youngest in the southeast and oldest in the west.
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 Eureka
| Period | Eureka | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 13.4% | 11.7% | 12.3% |
| 2010–14 | 7.7% | 11.7% | 12.3% |
| 2015–19 | 7.0% | 11.1% | 11.6% |
| 2020–24 | 5.1% | 11.3% | 11.6% |
| Change | −8.3 pts | −0.4 pts | −0.6 pts |
Single parents head only 5.1% of households in Eureka, well below the national share of 11.6%. The single-parent share is down 8.3 points from 2006–10, a much bigger shift than nationally. Of the 388 Illinois cities with 5,000+ people, only 33 have a lower 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 Eureka
Renters in Eureka
| Period | Eureka | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 26.8% | 30.8% | 33.3% |
| 2010–14 | 30.6% | 33.1% | 35.6% |
| 2015–19 | 34.0% | 33.9% | 36.0% |
| 2020–24 | 24.8% | 32.9% | 34.8% |
| Change | −2.0 pts | +2.1 pts | +1.5 pts |
About a quarter of households in Eureka rent their homes (24.8%), below the national share of 34.8%; the rest own. Just over half of owners (52.1%) have paid off their mortgages, well above the national share of 39.8%. Rentals cluster in the north; owners are most common in the southeast. Since 2006–10, the renter share has fallen 2.0 points, even as the national share rose.
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 Eureka
| Period | Eureka | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 7.2% | 10.0% | 11.4% |
| 2010–14 | 9.3% | 10.1% | 11.4% |
| 2015–19 | 3.5% | 9.8% | 11.1% |
| 2020–24 | 12.9% | 8.1% | 9.6% |
| Change | +5.7 pts | −1.9 pts | −1.8 pts |
Vacancy runs high in Eureka: 12.9% of homes are empty, against 9.6% nationally. The count includes vacation homes and homes between owners or tenants, not just abandoned ones. Since 2006–10, vacancy has risen 5.7 points, 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 Eureka
| Period | Eureka | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 1965 | 1966 | 1974 |
| 2010–14 | 1970 | 1967 | 1975 |
| 2015–19 | 1971 | 1968 | 1977 |
| 2020–24 | 1970 | 1970 | 1980 |
| Change | +5 | +4 | +6 |
Eureka is a place of older homes: half were built before 1970, 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 1965 in 2006–10, a sign of steady new building.
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 Eureka
| Period | Eureka | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | $603 | $953 | $965 |
| 2010–14 | $590 | $1,028 | $1,040 |
| 2015–19 | $693 | $1,165 | $1,213 |
| 2020–24 | $733 | $1,428 | $1,571 |
| Change | +$130 | +$475 | +$606 |
A typical rental in Eureka costs $733 a month with utilities, well below the national median of $1,571. Rent has climbed $130 a month since 2006–10, up 21%, a slower climb than the nation's. Rent takes 33.2% 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 south.
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 Eureka
Bachelor's degrees in Eureka
| Period | Eureka | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 26.0% | 31.2% | 28.4% |
| 2010–14 | 31.6% | 32.4% | 29.6% |
| 2015–19 | 37.9% | 34.7% | 32.1% |
| 2020–24 | 35.2% | 37.7% | 35.6% |
| Change | +9.3 pts | +6.5 pts | +7.2 pts |
Just over a third of adults 25 and older in Eureka (35.2%) hold at least a bachelor's degree, close to the national share of 35.6%. The share with a degree has risen 9.3 points since 2006–10, as it has nationally. College graduates are most concentrated in the southwest and least in the north.
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 Eureka
| Period | Eureka | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 93.8% | 86.3% | 84.9% |
| 2010–14 | 93.3% | 87.5% | 86.1% |
| 2015–19 | 92.6% | 89.1% | 87.7% |
| 2020–24 | 97.2% | 90.3% | 89.3% |
| Change | +3.4 pts | +4.0 pts | +4.3 pts |
Finishing high school is nearly universal in Eureka: 97.2% 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 3.4 points, mirroring the country. Eureka has a higher share of high school graduates than at least four in five Illinois cities.
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 Eureka
| Period | Eureka | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 8.1% | 8.7% | 8.1% |
| 2010–14 | 8.3% | 10.2% | 9.4% |
| 2015–19 | 4.8% | 6.1% | 5.6% |
| 2020–24 | 6.0% | 6.0% | 5.4% |
| Change | −2.1 pts | −2.7 pts | −2.7 pts |
At 6.0%, unemployment in Eureka is close to the national rate of 5.4%. Since 2006–10, unemployment has fallen 2.1 points, 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).
Eureka 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Eureka | 2.27 | 41.4 | 5.1% | 24.8% | 12.9% | 1970 | $733 | 35.2% | 97.2% | 6.0% |
| Goodfield | 2.76 | 42.1 | 5.3% | 10.4% | 4.0% | 1977 | $1,120 | 30.2% | 96.3% | 2.6% |
| Roanoke | 2.61 | 40.7 | 5.1% | 15.1% | 8.3% | 1958 | $1,145 | 25.9% | 93.9% | 2.8% |
| Congerville | 3.11 | 32.7 | 3.9% | 13.0% | 4.9% | 1980 | $1,110 | 40.2% | 99.3% | 0.8% |
| Deer Creek | 2.65 | 39.2 | 7.5% | 11.5% | 12.9% | 1973 | $1,143 | 33.2% | 96.9% | 1.3% |
| Secor | 2.72 | 40.0 | 4.4% | 14.4% | 7.0% | 1969 | $1,075 | 31.2% | 96.3% | 6.6% |
| Metamora | 2.73 | 41.0 | 6.7% | 6.5% | 5.9% | 1982 | $1,079 | 49.1% | 96.3% | 0.8% |
| Washington | 2.48 | 41.2 | 6.3% | 20.3% | 6.0% | 1977 | $1,147 | 37.0% | 97.2% | 1.9% |
| Oak Ridge | 2.45 | 46.7 | 6.6% | 8.2% | 14.2% | 1983 | $1,103 | 41.0% | 91.6% | 2.2% |
| Harvard Hills | 2.69 | 37.3 | 4.1% | 16.9% | 18.1% | 1994 | $1,101 | 47.7% | 96.6% | 7.6% |
| Germantown Hills | 2.81 | 40.3 | 7.0% | 6.1% | 3.9% | 1991 | $1,267 | 55.3% | 96.0% | 3.3% |
All figures 2020–24.
Cities with similar populations: Berryville, VA · Addis, LA · Zelienople, PA · Albany, KY · Wyncote, PA · Young Harris, GA · Yacolt, WA · Orwigsburg, PA · Oneida, TN · Ontario, OH
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 Eureka. 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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