Sauk County Population

1840–2026

66,751

2026 projection

1.5% since 2020 (increase)

010K20K30K40K50K60K70K1840186018801900192019401960198020002020

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 Sauk County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202666,751+990.15%
202566,652+990.15%
202466,553+3370.51%
202366,216+2720.41%
202265,944+2310.35%
202165,713-830.13%
202065,796+1,3762.14%
201964,420+1140.18%
201864,306+3500.55%
201763,956+3290.52%

Showing 10 of 33 years.

Sauk County Demographics

41.6median age

Median age

Female42.3 yrs
Male41.1 yrs

Adults

51,257
13,140 seniors (65+) · 26% of adults38,117 other adults

Sex

Female 49.8% · 32,852Male 50.2% · 33,157

Population by age

MaleFemale85+ years, male: 56685+ years, female: 1,09280–84 years, male: 59680–84 years, female: 73475–79 years, male: 1,09675–79 years, female: 1,20270–74 years, male: 1,84270–74 years, female: 1,93265–69 years, male: 2,00465–69 years, female: 2,07660–64 years, male: 2,35060–64 years, female: 2,29955–59 years, male: 2,37955–59 years, female: 2,31550–54 years, male: 2,06850–54 years, female: 1,96145–49 years, male: 1,80545–49 years, female: 1,94140–44 years, male: 2,36640–44 years, female: 2,02435–39 years, male: 2,09435–39 years, female: 2,11130–34 years, male: 2,04830–34 years, female: 1,92825–29 years, male: 1,88725–29 years, female: 1,80320–24 years, male: 1,81720–24 years, female: 1,68615–19 years, male: 2,02715–19 years, female: 1,90610–14 years, male: 2,23610–14 years, female: 2,1825–9 years, male: 2,0525–9 years, female: 1,9010–4 years, male: 1,9240–4 years, female: 1,75985+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–41K1K2K2K

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 660 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

Sauk County Income

$79,541median household income

Median household income

$79,541

Half of households earn more, half earn less

Median earnings

$51,358

Typical yearly pay for a worker 25 or older.

Poverty rate

8.1%

About 1 in 12 residents

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

Sauk 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%55%55%
Never married27%31%23%
Divorced13%11%14%
Widowed5%3%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