Johnson County Population

1830–2026

177.5K

2026 projection

9.4% since 2020 (increase)

050K100K150K200K1850190019502000

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.
2026177,501+3,2391.86%
2025174,262+3,2391.89%
2024171,023+2,6181.55%
2023168,405+2,6011.57%
2022165,804+1,4740.90%
2021164,330+2,0931.29%
2020162,237+3,9052.47%
2019158,332+2,0311.30%
2018156,301+2,4221.57%
2017153,879+2,2581.49%

Showing 10 of 34 years.

Johnson County Demographics

38median age

Median age

Female39.1 yrs
Male36.9 yrs

Adults

125,954
26,185 seniors (65+) · 21% of adults99,769 other adults

Sex

Female 50.4% · 83,776Male 49.6% · 82,539

Population by age

MaleFemale85+ years, male: 1,17685+ years, female: 1,96380–84 years, male: 1,54580–84 years, female: 1,68275–79 years, male: 1,74575–79 years, female: 2,72170–74 years, male: 3,23270–74 years, female: 3,80065–69 years, male: 4,01265–69 years, female: 4,30960–64 years, male: 4,74960–64 years, female: 4,96055–59 years, male: 4,97355–59 years, female: 5,24450–54 years, male: 5,07550–54 years, female: 4,96045–49 years, male: 5,25745–49 years, female: 5,30640–44 years, male: 5,99340–44 years, female: 5,79135–39 years, male: 5,87035–39 years, female: 5,76430–34 years, male: 5,69230–34 years, female: 5,67025–29 years, male: 5,77825–29 years, female: 5,26120–24 years, male: 4,94720–24 years, female: 4,89315–19 years, male: 5,44515–19 years, female: 5,31110–14 years, male: 6,91510–14 years, female: 6,2995–9 years, male: 5,0395–9 years, female: 5,0450–4 years, male: 5,0960–4 years, female: 4,79785+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K4K4K6K6K

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 1,663 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

$90,454median household income

Median household income

$90,454

Half of households earn more, half earn less

Median earnings

$55,355

Typical yearly pay for a worker 25 or older.

Poverty rate

7.4%

About 1 in 13 residents

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

Johnson County Marital Status

55% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married55%57%54%
Never married28%31%25%
Divorced11%9%12%
Widowed5%2%8%
Separated<1%1%<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