Population 47 · Census ACS 2020–24
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Population and households in Knowlton Heights
Household size in Knowlton Heights
| Period | Knowlton Heights | Boise area | Idaho | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.31 | 2.75 | 2.72 | 2.68 |
| 2010–14 | 3.16 | 2.79 | 2.78 | 2.73 |
| 2015–19 | 3.15 | 2.75 | 2.76 | 2.71 |
| 2020–24 | 2.93 | 2.71 | 2.79 | 2.65 |
| Change | −0.39 | −0.05 | +0.07 | −0.03 |
Households in Knowlton Heights are large by national standards, averaging 2.93 people against 2.65 for the U.S. That usually means more families with children at home. Since 2006–10, household size has dropped from 3.31, but in a place this small, much of that may be survey noise rather than real change.
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 Knowlton Heights
| Period | Knowlton Heights | Boise area | Idaho | U.S. |
|---|---|---|---|---|
| 2006–10 | 28.6 | 34.6 | 35.5 | 37.7 |
| 2010–14 | 32.3 | 35.8 | 36.6 | 38.6 |
| 2015–19 | 34.2 | 37.2 | 37.6 | 39.6 |
| 2020–24 | 35.0 | 38.4 | 38.2 | 40.1 |
| Change | +6.4 | +3.8 | +2.7 | +2.3 |
Knowlton Heights is young: half of its residents are under 35.0, compared with a national median of 40.1. The population tilts toward young families with children.
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 Knowlton Heights
| Period | Knowlton Heights | Boise area | Idaho | U.S. |
|---|---|---|---|---|
| 2006–10 | 13.1% | 10.5% | 10.0% | 12.3% |
| 2010–14 | 10.4% | 10.4% | 10.2% | 12.3% |
| 2015–19 | 13.1% | 9.5% | 9.3% | 11.6% |
| 2020–24 | 9.1% | 9.3% | 9.3% | 11.6% |
| Change | −4.0 pts | −1.2 pts | −0.7 pts | −0.6 pts |
Single-parent households are less common in Knowlton Heights than nationally: 9.1%, against 11.6%. The Boise area as a whole looks much the same.
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 Knowlton Heights
Renters in Knowlton Heights
| Period | Knowlton Heights | Boise area | Idaho | U.S. |
|---|---|---|---|---|
| 2006–10 | 21.3% | 29.5% | 29.0% | 33.3% |
| 2010–14 | 20.3% | 31.9% | 30.8% | 35.6% |
| 2015–19 | 29.5% | 30.3% | 30.0% | 36.0% |
| 2020–24 | 11.1% | 27.5% | 27.9% | 34.8% |
| Change | −10.2 pts | −2.0 pts | −1.1 pts | +1.5 pts |
Knowlton Heights is overwhelmingly a place of homeowners: only 11.1% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 33.7% have no mortgage at all, below the national share of 39.8%.
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 Knowlton Heights
| Period | Knowlton Heights | Boise area | Idaho | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.3% | 7.9% | 10.4% | 11.4% |
| 2010–14 | 9.9% | 7.2% | 11.0% | 11.4% |
| 2015–19 | 2.6% | 5.6% | 10.5% | 11.1% |
| 2020–24 | 3.9% | 5.6% | 9.3% | 9.6% |
| Change | −3.5 pts | −2.3 pts | −1.1 pts | −1.8 pts |
Empty homes are scarce in Knowlton Heights: just 3.9% sit vacant, compared with 9.6% nationally, a sign of a tight housing market.
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 Knowlton Heights
| Period | Knowlton Heights | Boise area | Idaho | U.S. |
|---|---|---|---|---|
| 2006–10 | 1997 | 1989 | 1982 | 1974 |
| 2010–14 | 1997 | 1989 | 1984 | 1975 |
| 2015–19 | 2004 | 1991 | 1986 | 1977 |
| 2020–24 | 1999 | 1996 | 1989 | 1980 |
| Change | +3 | +7 | +7 | +6 |
Knowlton Heights has newer housing than the country as a whole: the median home was built in 1999, versus 1980 nationally. The picture is much the same across the Boise area.
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 Knowlton Heights
| Period | Knowlton Heights | Boise area | Idaho | U.S. |
|---|---|---|---|---|
| 2006–10 | $985 | $884 | $766 | $965 |
| 2010–14 | $857 | $921 | $820 | $1,040 |
| 2015–19 | $1,175 | $1,075 | $941 | $1,213 |
| 2020–24 | $1,664 | $1,700 | $1,407 | $1,571 |
| Change | +$678 | +$815 | +$641 | +$606 |
The median renter in Knowlton Heights pays $1,664 a month for rent and utilities, above the national median of $1,571. The picture is much the same across the Boise area. Rent takes 26.1% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent.
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 Knowlton Heights
Bachelor's degrees in Knowlton Heights
| Period | Knowlton Heights | Boise area | Idaho | U.S. |
|---|---|---|---|---|
| 2006–10 | 17.4% | 28.8% | 25.0% | 28.4% |
| 2010–14 | 24.1% | 30.0% | 25.9% | 29.6% |
| 2015–19 | 24.1% | 31.6% | 27.8% | 32.1% |
| 2020–24 | 10.7% | 36.9% | 31.7% | 35.6% |
| Change | −6.6 pts | +8.2 pts | +6.6 pts | +7.2 pts |
Fewer adults in Knowlton Heights have a four-year degree than in the country as a whole: 10.7%, against 35.6% nationally.
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 Knowlton Heights
| Period | Knowlton Heights | Boise area | Idaho | U.S. |
|---|---|---|---|---|
| 2006–10 | 85.9% | 89.5% | 88.7% | 84.9% |
| 2010–14 | 88.1% | 90.1% | 89.3% | 86.1% |
| 2015–19 | 85.1% | 91.7% | 90.8% | 87.7% |
| 2020–24 | 87.5% | 92.7% | 92.1% | 89.3% |
| Change | +1.7 pts | +3.2 pts | +3.4 pts | +4.3 pts |
About one in eight adults in Knowlton Heights never finished high school, a bit more than nationally: 87.5% have a diploma or equivalent, against 89.3% across the U.S.
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 Knowlton Heights
| Period | Knowlton Heights | Boise area | Idaho | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.0% | 7.7% | 7.0% | 8.1% |
| 2010–14 | 8.8% | 8.4% | 8.1% | 9.4% |
| 2015–19 | 5.1% | 4.3% | 4.4% | 5.6% |
| 2020–24 | 11.2% | 3.2% | 3.8% | 5.4% |
| Change | +3.2 pts | −4.5 pts | −3.2 pts | −2.7 pts |
Finding work has been harder in Knowlton Heights: 11.2% of the labor force was out of work and looking, well above the national rate of 5.4%. 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).
Knowlton Heights 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Knowlton Heights | 2.93 | 35.0 | 9.1% | 11.1% | 3.9% | 1999 | $1,664 | 10.7% | 87.5% | 11.2% |
| Sunnyslope | 2.41 | 36.6 | 12.1% | 7.8% | 8.7% | 2012 | $1,497 | 21.0% | 91.8% | 8.6% |
| Caldwell | 3.05 | 33.3 | 10.6% | 24.8% | 4.9% | 1995 | $1,433 | 21.6% | 84.3% | 4.4% |
| Middleton | 3.02 | 38.9 | 8.1% | 9.3% | 4.0% | 2005 | $1,215 | 26.2% | 93.6% | 5.4% |
| Nampa | 2.84 | 36.2 | 11.6% | 26.5% | 4.8% | 1994 | $1,538 | 25.1% | 89.5% | 2.9% |
| Star | 2.86 | 42.7 | 7.8% | 16.8% | 5.4% | 2011 | $2,183 | 35.9% | 97.3% | 6.9% |
| Greenleaf | 2.97 | 34.9 | 13.2% | 26.3% | 3.1% | 1983 | $1,226 | 19.3% | 82.6% | 5.5% |
| Notus | 2.87 | 41.2 | 8.3% | 13.3% | 6.5% | 1993 | $1,079 | 14.1% | 80.6% | 4.4% |
| Huston | 2.82 | 41.5 | 6.3% | 11.2% | 7.8% | 1992 | $1,073 | 21.3% | 87.1% | 0.5% |
| Marsing | 2.82 | 39.3 | 9.0% | 24.3% | 9.0% | 1989 | $875 | 14.7% | 75.6% | 0.6% |
| Meridian | 2.82 | 37.7 | 7.9% | 24.8% | 5.6% | 2008 | $2,190 | 43.6% | 95.9% | 2.7% |
All figures 2020–24.
Cities with similar populations: Dorena, MO · Dundarrach, NC · Windsor Park, PA · Duffy, WV · Duckers, KY · Downeyville, IN · Douthat, OK · Douglas, WV · Dorrington, CA · East De Kalb, NY
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 Knowlton Heights. 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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