Butler County Population

1850–2026

41,909

2026 projection

0.4% since 2020 (decrease)

010K20K30K40K50K186018801900192019401960198020002020

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 Butler County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202641,909+50.01%
202541,904+50.01%
202441,899-260.06%
202341,925-2080.49%
202242,133-340.08%
202142,167+1030.24%
202042,064-5101.20%
201942,574-670.16%
201842,641-100.02%
201742,651-1530.36%

Showing 10 of 32 years.

Butler County Demographics

39.5median age

Median age

Female41.7 yrs
Male37.5 yrs

Adults

32,240
8,184 seniors (65+) · 25% of adults24,056 other adults

Sex

Female 51.2% · 21,527Male 48.8% · 20,493

Population by age

MaleFemale85+ years, male: 38585+ years, female: 44080–84 years, male: 26880–84 years, female: 50775–79 years, male: 73175–79 years, female: 1,01470–74 years, male: 93670–74 years, female: 1,08165–69 years, male: 1,23365–69 years, female: 1,58960–64 years, male: 1,62560–64 years, female: 1,73055–59 years, male: 1,02055–59 years, female: 98050–54 years, male: 1,28850–54 years, female: 1,38745–49 years, male: 1,16845–49 years, female: 1,21440–44 years, male: 1,01140–44 years, female: 1,17935–39 years, male: 1,47635–39 years, female: 1,35530–34 years, male: 1,43630–34 years, female: 1,35825–29 years, male: 1,13525–29 years, female: 1,21520–24 years, male: 1,19020–24 years, female: 1,24615–19 years, male: 1,39415–19 years, female: 1,30010–14 years, male: 1,58710–14 years, female: 1,2495–9 years, male: 1,2655–9 years, female: 1,3140–4 years, male: 1,3450–4 years, female: 1,36985+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

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 420 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

Butler County Income

$49,089median household income

Median household income

$49,089

Half of households earn more, half earn less

Median earnings

$36,143

Typical yearly pay for a worker 25 or older.

Poverty rate

20.5%

About 1 in 5 residents

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

Butler County Marital Status

44% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married44%46%42%
Never married30%34%27%
Divorced16%16%16%
Widowed7%3%11%
Separated3%1%4%

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