Johnson County Population

1840–2026

57,516

2026 projection

6.5% since 2020 (increase)

010K20K30K40K50K60K1840186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Johnson County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202657,516+8461.49%
202556,670+8461.52%
202455,824+7731.40%
202355,051+6451.19%
202254,406+1970.36%
202154,209+1860.34%
202054,023-1640.30%
201954,187+4690.87%
201853,718-1750.32%
201753,893+1710.32%

Showing 10 of 33 years.

Johnson County Demographics

31.5median age

Median age

Female32.7 yrs
Male30.7 yrs

Adults

42,624
7,196 seniors (65+) · 17% of adults35,428 other adults

Sex

Female 48.9% · 26,764Male 51.1% · 27,968

Population by age

MaleFemale85+ years, male: 35485+ years, female: 46080–84 years, male: 42080–84 years, female: 46875–79 years, male: 48875–79 years, female: 68570–74 years, male: 1,05970–74 years, female: 1,17465–69 years, male: 1,15265–69 years, female: 93660–64 years, male: 1,34360–64 years, female: 1,59655–59 years, male: 1,52555–59 years, female: 1,41050–54 years, male: 1,27350–54 years, female: 1,35145–49 years, male: 1,31945–49 years, female: 1,19640–44 years, male: 1,60340–44 years, female: 1,30835–39 years, male: 1,79235–39 years, female: 1,81730–34 years, male: 1,90030–34 years, female: 1,72925–29 years, male: 2,18825–29 years, female: 1,84620–24 years, male: 4,14120–24 years, female: 3,50915–19 years, male: 2,25915–19 years, female: 2,18310–14 years, male: 1,66410–14 years, female: 1,6945–9 years, male: 1,7605–9 years, female: 1,7110–4 years, male: 1,7280–4 years, female: 1,69185+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 547 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Johnson County Income

$67,272median household income

Median household income

$67,272

Half of households earn more, half earn less

Median earnings

$46,476

Typical yearly pay for a worker 25 or older.

Poverty rate

11.8%

About 1 in 8 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Johnson County Marital Status

48% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married48%47%48%
Never married36%39%33%
Divorced10%9%10%
Widowed5%2%8%
Separated2%2%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year