Population 620,631 · Census ACS 2020–24
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Population and households in Johnson County
Household size in Johnson County
| Period | Johnson County | Kansas City area | Kansas | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.61 | 2.57 | 2.54 | 2.68 |
| 2010–14 | 2.65 | 2.60 | 2.58 | 2.73 |
| 2015–19 | 2.65 | 2.59 | 2.56 | 2.71 |
| 2020–24 | 2.57 | 2.55 | 2.53 | 2.65 |
| Change | −0.04 | −0.02 | −0.01 | −0.03 |
Households in Johnson County average 2.57 people, about the same as the country as a whole (2.65). Household size has edged down from 2.61 in 2006–10, in line with the national trend. The biggest households, usually families with children, are concentrated in the northwest.
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 Johnson County
| Period | Johnson County | Kansas City area | Kansas | U.S. |
|---|---|---|---|---|
| 2006–10 | 37.6 | 37.5 | 37.4 | 37.7 |
| 2010–14 | 38.1 | 37.9 | 37.8 | 38.6 |
| 2015–19 | 39.0 | 38.8 | 38.5 | 39.6 |
| 2020–24 | 39.9 | 39.2 | 38.8 | 40.1 |
| Change | +2.3 | +1.7 | +1.4 | +2.3 |
Half of the people in Johnson County are younger than 39.9 and half are older, close to the national median of 40.1. Since 2006–10, the median age has climbed from 37.6, in line with the national trend. Residents skew youngest in the southwest and oldest in the east.
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 Johnson County
| Period | Johnson County | Kansas City area | Kansas | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.6% | 11.7% | 10.8% | 12.3% |
| 2010–14 | 9.1% | 11.9% | 10.9% | 12.3% |
| 2015–19 | 8.7% | 11.2% | 10.4% | 11.6% |
| 2020–24 | 7.6% | 10.9% | 10.5% | 11.6% |
| Change | −1.1 pts | −0.8 pts | −0.4 pts | −0.6 pts |
Single parents head only 7.6% of households in Johnson County, well below the national share of 11.6%. The single-parent share has edged down 1.1 points since 2006–10, as it has nationally.
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 Johnson County
Renters in Johnson County
| Period | Johnson County | Kansas City area | Kansas | U.S. |
|---|---|---|---|---|
| 2006–10 | 28.1% | 31.2% | 30.6% | 33.3% |
| 2010–14 | 30.2% | 33.7% | 32.9% | 35.6% |
| 2015–19 | 30.8% | 34.9% | 33.7% | 36.0% |
| 2020–24 | 31.5% | 34.2% | 32.8% | 34.8% |
| Change | +3.4 pts | +3.0 pts | +2.3 pts | +1.5 pts |
Most households in Johnson County own their homes; 31.5% rent, a little below the national share of 34.8%. Nearly a third of owners (32.1%) have paid off their mortgages, below the national share of 39.8%. Rentals cluster in the center; owners are most common in the northwest. Since 2006–10, the renter share has risen 3.4 points, in line with the national trend.
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 Johnson County
| Period | Johnson County | Kansas City area | Kansas | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.9% | 10.0% | 10.1% | 11.4% |
| 2010–14 | 6.2% | 9.7% | 10.4% | 11.4% |
| 2015–19 | 6.4% | 9.0% | 11.3% | 11.1% |
| 2020–24 | 5.2% | 7.5% | 9.7% | 9.6% |
| Change | −1.6 pts | −2.5 pts | −0.4 pts | −1.8 pts |
Only 5.2% of homes in Johnson County are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. Vacancy is down 1.6 points from 2006–10, in line with the national trend. Only one other Kansas county has a lower vacancy rate.
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 Johnson County
| Period | Johnson County | Kansas City area | Kansas | U.S. |
|---|---|---|---|---|
| 2006–10 | 1984 | 1976 | 1971 | 1974 |
| 2010–14 | 1984 | 1977 | 1972 | 1975 |
| 2015–19 | 1985 | 1977 | 1973 | 1977 |
| 2020–24 | 1988 | 1980 | 1976 | 1980 |
| Change | +5 | +4 | +5 | +6 |
Much of the housing in Johnson County is relatively new: half of its homes were built after 1988, compared with 1980 for the U.S. as a whole. The median year built has moved up from 1984 in 2006–10, a sign of steady new building. Newer construction is concentrated in the northwest, while the northeast has the oldest housing. No other Kansas county has newer homes.
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 Johnson County
| Period | Johnson County | Kansas City area | Kansas | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,068 | $897 | $769 | $965 |
| 2010–14 | $1,175 | $980 | $858 | $1,040 |
| 2015–19 | $1,321 | $1,095 | $950 | $1,213 |
| 2020–24 | $1,613 | $1,395 | $1,159 | $1,571 |
| Change | +$545 | +$498 | +$390 | +$606 |
The median renter in Johnson County pays $1,613 a month for rent and utilities, close to the national median of $1,571. Rents here are higher than in the Kansas City area as a whole ($1,395). Rent has climbed $545 a month since 2006–10, up 51%, a slower climb than the nation's. Johnson County has the highest rents of any Kansas county.
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 Johnson County
Bachelor's degrees in Johnson County
| Period | Johnson County | Kansas City area | Kansas | U.S. |
|---|---|---|---|---|
| 2006–10 | 51.9% | 33.5% | 30.8% | 28.4% |
| 2010–14 | 52.6% | 34.1% | 31.7% | 29.6% |
| 2015–19 | 56.1% | 37.1% | 33.6% | 32.1% |
| 2020–24 | 57.6% | 39.7% | 35.6% | 35.6% |
| Change | +5.7 pts | +6.2 pts | +4.8 pts | +7.2 pts |
Johnson County is highly educated: nearly six in ten adults 25 and older (57.6%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree is up 5.7 points from 2006–10, in line with the national trend. Johnson County has the highest share of college graduates of any Kansas county.
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 Johnson County
| Period | Johnson County | Kansas City area | Kansas | U.S. |
|---|---|---|---|---|
| 2006–10 | 95.8% | 90.5% | 89.5% | 84.9% |
| 2010–14 | 95.9% | 90.9% | 90.0% | 86.1% |
| 2015–19 | 95.9% | 91.8% | 90.8% | 87.7% |
| 2020–24 | 96.5% | 92.9% | 91.7% | 89.3% |
| Change | +0.6 pts | +2.4 pts | +2.2 pts | +4.3 pts |
High school completion is high in Johnson County: 96.5% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma has edged up 0.6 points since 2006–10, a smaller shift than nationally. Few Kansas counties have a higher share of high school graduates: only four of 105.
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 Johnson County
| Period | Johnson County | Kansas City area | Kansas | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.4% | 6.8% | 6.1% | 8.1% |
| 2010–14 | 4.9% | 7.6% | 6.7% | 9.4% |
| 2015–19 | 2.8% | 4.0% | 4.1% | 5.6% |
| 2020–24 | 3.1% | 4.0% | 4.0% | 5.4% |
| Change | −1.3 pts | −2.9 pts | −2.1 pts | −2.7 pts |
Unemployment in Johnson County has been low: just 3.1% of the labor force was out of work and looking, well below the national rate of 5.4%. Unemployment is down 1.3 points from 2006–10, mirroring the country. 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).
Johnson 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Johnson County | 2.57 | 39.9 | 7.6% | 31.5% | 5.2% | 1988 | $1,613 | 57.6% | 96.5% | 3.1% |
| Jackson County | 2.42 | 38.5 | 12.8% | 40.9% | 9.1% | 1971 | $1,337 | 33.3% | 91.3% | 4.6% |
| Douglas County | 2.26 | 35.2 | 7.6% | 49.9% | 8.6% | 1983 | $1,161 | 51.9% | 95.8% | 4.5% |
| Lafayette County | 2.62 | 41.8 | 8.4% | 24.3% | 11.2% | 1977 | $969 | 26.6% | 92.4% | 3.2% |
| Shawnee County | 2.36 | 40.6 | 12.1% | 33.2% | 8.2% | 1972 | $1,100 | 31.1% | 92.7% | 4.3% |
| Wabaunsee County | 2.62 | 43.9 | 5.8% | 18.9% | 13.8% | 1962 | $917 | 26.2% | 95.9% | 4.4% |
| Cooper County | 2.50 | 41.6 | 10.0% | 24.3% | 14.3% | 1973 | $783 | 24.8% | 90.6% | 4.2% |
| Geary County | 2.68 | 28.5 | 15.8% | 56.5% | 10.4% | 1987 | $1,210 | 26.6% | 93.5% | 8.4% |
| Dickinson County | 2.30 | 43.2 | 8.9% | 21.4% | 9.2% | 1956 | $849 | 24.3% | 94.1% | 2.7% |
| Boone County | 2.39 | 35.5 | 9.4% | 42.3% | 6.9% | 1991 | $1,131 | 52.0% | 95.0% | 4.1% |
| Saline County | 2.38 | 42.1 | 9.4% | 32.9% | 8.6% | 1967 | $1,034 | 28.9% | 93.3% | 4.6% |
All figures 2020–24.
Counties with similar populations: Baltimore City, MD · Bernalillo County, NM · Brevard County, FL · New Castle County, DE · Summit County, OH · Montgomery County, OH · Montgomery County, TX · Ocean County, NJ · Pasco County, FL · Providence County, RI
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 Johnson 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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