Population 365,056 · Census ACS 2020–24
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Population and households in Hamilton County
Household size in Hamilton County
| Period | Hamilton County | Indianapolis area | Indiana | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.79 | 2.60 | 2.57 | 2.68 |
| 2010–14 | 2.79 | 2.63 | 2.59 | 2.73 |
| 2015–19 | 2.74 | 2.63 | 2.57 | 2.71 |
| 2020–24 | 2.73 | 2.59 | 2.54 | 2.65 |
| Change | −0.06 | −0.01 | −0.03 | −0.03 |
The typical household in Hamilton County holds 2.73 people, slightly more than the U.S. average of 2.65. Household size has edged down from 2.79 in 2006–10, mirroring the country. Only four of Indiana's 92 counties 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 Hamilton County
| Period | Hamilton County | Indianapolis area | Indiana | U.S. |
|---|---|---|---|---|
| 2006–10 | 35.6 | 36.3 | 37.5 | 37.7 |
| 2010–14 | 36.4 | 37.0 | 38.4 | 38.6 |
| 2015–19 | 37.6 | 37.7 | 39.1 | 39.6 |
| 2020–24 | 39.1 | 38.2 | 39.3 | 40.1 |
| Change | +3.6 | +1.9 | +1.7 | +2.3 |
At 39.1, the median age in Hamilton County is close to the national median of 40.1, so its age mix looks much like the country's. Since 2006–10, the median age has climbed from 35.6, as it has nationally. Residents skew youngest in the east and oldest in the south.
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 Hamilton County
| Period | Hamilton County | Indianapolis area | Indiana | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.9% | 12.7% | 11.8% | 12.3% |
| 2010–14 | 8.9% | 12.8% | 12.0% | 12.3% |
| 2015–19 | 8.6% | 12.0% | 11.6% | 11.6% |
| 2020–24 | 7.3% | 11.8% | 11.7% | 11.6% |
| Change | −1.6 pts | −0.9 pts | −0.1 pts | −0.6 pts |
Single-parent households are relatively rare in Hamilton County: 7.3% of households, against 11.6% nationally. Since 2006–10, the single-parent share has fallen 1.6 points, as it has nationally. Of Indiana's 92 counties, only two 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 Hamilton County
Renters in Hamilton County
| Period | Hamilton County | Indianapolis area | Indiana | U.S. |
|---|---|---|---|---|
| 2006–10 | 20.0% | 31.4% | 28.5% | 33.3% |
| 2010–14 | 21.2% | 34.2% | 30.5% | 35.6% |
| 2015–19 | 23.1% | 34.8% | 30.9% | 36.0% |
| 2020–24 | 23.9% | 33.2% | 29.4% | 34.8% |
| Change | +4.0 pts | +1.8 pts | +1.0 pts | +1.5 pts |
Only 23.9% of households in Hamilton County rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 25.2% have no mortgage at all, well below the national share of 39.8%. Rentals cluster in the southwest; owners are most common in the center. The renter share is up 4.0 points from 2006–10, mirroring the country.
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 Hamilton County
| Period | Hamilton County | Indianapolis area | Indiana | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.2% | 11.2% | 11.2% | 11.4% |
| 2010–14 | 6.0% | 10.6% | 11.2% | 11.4% |
| 2015–19 | 5.7% | 9.6% | 10.9% | 11.1% |
| 2020–24 | 5.7% | 8.0% | 9.3% | 9.6% |
| Change | −1.4 pts | −3.2 pts | −2.0 pts | −1.8 pts |
Fewer homes sit empty in Hamilton County than nationally: 5.7%, against 9.6% for the U.S. Vacancy has edged down 1.4 points since 2006–10, in line with the national trend. Few Indiana counties have a lower vacancy rate: only five of 92.
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 Hamilton County
| Period | Hamilton County | Indianapolis area | Indiana | U.S. |
|---|---|---|---|---|
| 2006–10 | 1993 | 1978 | 1972 | 1974 |
| 2010–14 | 1994 | 1979 | 1973 | 1975 |
| 2015–19 | 1996 | 1980 | 1974 | 1977 |
| 2020–24 | 1999 | 1982 | 1977 | 1980 |
| Change | +6 | +5 | +5 | +6 |
Much of the housing in Hamilton County is relatively new: half of its homes were built after 1999, compared with 1980 for the U.S. as a whole. The median year built has moved up from 1993 in 2006–10, a sign of steady new building. Newer construction is concentrated in the east, while the north has the oldest housing. Hamilton County has the newest homes of any Indiana county.
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 Hamilton County
| Period | Hamilton County | Indianapolis area | Indiana | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,149 | $877 | $763 | $965 |
| 2010–14 | $1,176 | $946 | $819 | $1,040 |
| 2015–19 | $1,345 | $1,060 | $903 | $1,213 |
| 2020–24 | $1,739 | $1,368 | $1,146 | $1,571 |
| Change | +$590 | +$492 | +$384 | +$606 |
A typical rental in Hamilton County costs $1,739 a month with utilities, above the national median of $1,571. Rent has climbed $590 a month since 2006–10, up 51%, a slower climb than the nation's. Rent takes 28.0% of the typical renter's income, just under the 30% mark often used to define affordable rent. No other Indiana county has higher rents.
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 Hamilton County
Bachelor's degrees in Hamilton County
| Period | Hamilton County | Indianapolis area | Indiana | U.S. |
|---|---|---|---|---|
| 2006–10 | 54.8% | 30.9% | 23.8% | 28.4% |
| 2010–14 | 56.2% | 31.8% | 24.6% | 29.6% |
| 2015–19 | 59.7% | 35.2% | 27.1% | 32.1% |
| 2020–24 | 62.8% | 38.6% | 30.0% | 35.6% |
| Change | +8.0 pts | +7.7 pts | +6.2 pts | +7.2 pts |
College graduates are unusually common in Hamilton County: 62.8% of adults 25 and older have a bachelor's degree or higher, against 35.6% nationally. Education tends to track local incomes and the kinds of jobs nearby. Since 2006–10, the share with a degree has risen 8.0 points, as it has nationally. No other Indiana county has a higher 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 Hamilton County
| Period | Hamilton County | Indianapolis area | Indiana | U.S. |
|---|---|---|---|---|
| 2006–10 | 96.1% | 88.1% | 86.5% | 84.9% |
| 2010–14 | 96.1% | 88.9% | 87.7% | 86.1% |
| 2015–19 | 96.8% | 89.6% | 88.7% | 87.7% |
| 2020–24 | 97.4% | 90.8% | 89.9% | 89.3% |
| Change | +1.3 pts | +2.8 pts | +3.4 pts | +4.3 pts |
Finishing high school is nearly universal in Hamilton County: 97.4% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 1.3 points from 2006–10, a smaller shift than nationally. No other Indiana county has a higher 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 Hamilton County
| Period | Hamilton County | Indianapolis area | Indiana | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.2% | 7.9% | 8.4% | 8.1% |
| 2010–14 | 5.1% | 9.0% | 8.9% | 9.4% |
| 2015–19 | 2.7% | 4.9% | 4.9% | 5.6% |
| 2020–24 | 2.7% | 4.1% | 4.3% | 5.4% |
| Change | −1.4 pts | −3.7 pts | −4.1 pts | −2.7 pts |
Unemployment in Hamilton County has been low: just 2.7% of the labor force was out of work and looking, well below the national rate of 5.4%. Unemployment is down 1.4 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).
Hamilton County compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Hamilton County | 2.73 | 39.1 | 7.3% | 23.9% | 5.7% | 1999 | $1,739 | 62.8% | 97.4% | 2.7% |
| Boone County | 2.65 | 39.6 | 9.0% | 21.2% | 4.2% | 1988 | $1,477 | 52.6% | 94.8% | 2.5% |
| Madison County | 2.42 | 41.6 | 13.3% | 29.8% | 10.3% | 1967 | $1,037 | 20.4% | 90.8% | 5.9% |
| Henry County | 2.53 | 43.0 | 12.8% | 23.8% | 12.6% | 1960 | $856 | 17.8% | 90.4% | 4.0% |
| Montgomery County | 2.44 | 40.4 | 9.7% | 19.7% | 7.0% | 1964 | $860 | 20.5% | 89.4% | 3.5% |
| Randolph County | 2.34 | 42.1 | 13.0% | 22.7% | 9.7% | 1956 | $779 | 14.6% | 91.1% | 4.2% |
| Fountain County | 2.42 | 43.3 | 13.2% | 25.4% | 12.3% | 1962 | $802 | 14.8% | 91.3% | 4.6% |
| Darke County | 2.46 | 42.1 | 10.0% | 27.6% | 6.5% | 1961 | $819 | 16.7% | 90.9% | 2.8% |
| Vermilion County | 2.36 | 42.0 | 13.9% | 29.8% | 12.3% | 1958 | $843 | 19.6% | 91.2% | 6.6% |
| Miami County | 2.50 | 42.1 | 9.5% | 26.6% | 5.9% | 1973 | $1,041 | 27.7% | 92.5% | 3.0% |
| Champaign County | 2.33 | 35.0 | 9.9% | 46.0% | 10.8% | 1981 | $1,115 | 47.8% | 93.1% | 4.6% |
All figures 2020–24.
Counties with similar populations: Gloucester County, NJ · Cumberland County, NC · Dakota County, MN · Davis County, UT · Douglas County, CO · Dutchess County, NY · Erie County, PA · Escambia County, FL · Forsyth County, GA · Forsyth County, NC
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 Hamilton County. 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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