Spencer Brook township Flag

Spencer Brook township

County:
Isanti County
County Seat:
No
Area (mi²):
33.725
State:
Minnesota

Spencer Brook township is located in Isanti County, Minnesota. Spencer Brook township has a 2026 population of 1,688. Spencer Brook township is currently declining at a rate of -0.41% annually but its population has increased by 0.96% since the most recent census, which recorded a population of 1,672 in 2020.

The median household income in Spencer Brook township is $103,818 with a poverty rate of 5.64%. The median age in Spencer Brook township is 39.8 years: 39.8 years for males, and 39.8 years for females. For every 100 females there are 108.5 males.

1.7K
Total Population
50
Density (mi²)
-7 -0.41%
Growth

Spencer Brook township Population

Spencer Brook township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,688-7-0.41%
20251,695-7-0.41%
20241,702-7-0.41%
20231,709201.18%
20221,68950.3%
20211,684120.72%
20201,67270.42%
20191,64170.43%
20181,63420.12%
20171,632281.75%
20161,604120.75%
20151,592-10-0.62%
20141,60260.38%
20131,596-6-0.37%
20121,602-1-0.06%
20111,603140.88%
20101,59110.06%

Median Age

Overall: 39.8 years
Female: 39.8 years
Male: 39.8 years

Spencer Brook township Adults

There are 1,357 adults, (292 of whom are seniors) in Spencer Brook township.

Sex Ratio

Female: 936 (48%)
Male: 1,016 (52%)

Demographics

The racial composition of Spencer Brook township includes 92.47% White, and smaller percentages for other race, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White1,80592.47%
Two or more races924.71%
Other race512.61%
Native American40.2%
Race
Population ↓
Percentage (of total)
Other race512.61%
Two or more races201.02%
White40.2%
Race
Population ↓
Percentage (of total)
White1,80192.26%
Two or more races723.69%
Native American40.2%

Spencer Brook township Marital Status

Economics and Income Statistics

Spencer Brook township 's average per capita income is $59,479. Household income levels show a median of $103,818. The poverty rate stands at 5.64%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$119,688-
Families$106,875$128,112
Households$103,818$120,129
Non Families$83,750$85,074

$59,479

Average Income

$103,818

Median Household Income

5.64%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)