Cottage Grove Population

1970–2026

44,514

2026 projection

14.6% since 2020 (increase)

010K20K30K40K50K197019801990200020102020

Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal 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 Cottage Grove. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202644,514+9102.09%
202543,604+9772.29%
202442,627+5871.40%
202342,040+9832.39%
202241,057+1,0912.73%
202139,966+1,1272.90%
202038,839+4941.29%
201938,345+5021.33%
201837,843+5531.48%
201737,290+8812.42%

Showing 10 of 21 years.

The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.

Growth since 2020, compared

Cottage Grove is growing faster than Washington County, Minnesota, and the U.S.

  • Cottage Grove+11.8%
  • Washington County+6.9%
  • United States+3.1%
  • Minnesota+2.1%

Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.

Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.

Cottage Grove Demographics

36.5median age

Median age

Female36.3 yrs
Male36.6 yrs

Adults

30,583
5,760 seniors (65+) · 19% of adults24,823 other adults

Sex

Female 50.5% · 20,713Male 49.5% · 20,279

Population by age

MaleFemale85+ years, male: 16485+ years, female: 50480–84 years, male: 33480–84 years, female: 27375–79 years, male: 37275–79 years, female: 48170–74 years, male: 1,03170–74 years, female: 76765–69 years, male: 96265–69 years, female: 87260–64 years, male: 99260–64 years, female: 1,16355–59 years, male: 1,25855–59 years, female: 1,27350–54 years, male: 1,19350–54 years, female: 91645–49 years, male: 1,00945–49 years, female: 1,40640–44 years, male: 1,52240–44 years, female: 1,34335–39 years, male: 1,97635–39 years, female: 1,88530–34 years, male: 1,11830–34 years, female: 1,47425–29 years, male: 1,47825–29 years, female: 1,20820–24 years, male: 1,22620–24 years, female: 1,39015–19 years, male: 1,30015–19 years, female: 1,43410–14 years, male: 1,47610–14 years, female: 1,6725–9 years, male: 1,2205–9 years, female: 1,4650–4 years, male: 1,6480–4 years, female: 1,18785+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 410 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

Cottage Grove Income

$120,791median household income

Median household income

$120,791

Half of households earn more, half earn less

Median earnings

$68,970

Typical yearly pay for a worker 25 or older.

Poverty rate

4.2%

About 1 in 24 residents

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

Cottage Grove Marital Status

56% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married56%58%54%
Never married30%31%29%
Divorced9%9%10%
Widowed5%3%6%
Separated<1%<1%<1%

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

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources