Spring Bay township Flag

Spring Bay township

County:
Woodford County
County Seat:
No
Area (mi²):
10.111
State:
Illinois

Spring Bay township is located in Woodford County, Illinois. Spring Bay township has a 2026 population of 2,529. Spring Bay township is currently declining at a rate of -0.04% annually but its population has increased by 0.4% since the most recent census, which recorded a population of 2,519 in 2020.

The median household income in Spring Bay township is $75,846 with a poverty rate of 9.69%. The median age in Spring Bay township is 41.5 years: 42.6 years for males, and 40.3 years for females. For every 100 females there are 99.4 males.

2.5K
Total Population
250
Density (mi²)
-1 -0.04%
Growth

Spring Bay township Population

Spring Bay township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20262,529-1-0.04%
20252,530-1-0.04%
20242,531-1-0.04%
20232,532160.64%
20222,51670.28%
20212,509-10-0.4%
20202,519-3-0.12%
20192,663-1-0.04%
20182,664-1-0.04%
20172,665-10-0.37%
20162,67530.11%
20152,672-3-0.11%
20142,67570.26%
20132,668130.49%
20122,655-2-0.08%
20112,657140.53%
20102,64710.04%

Median Age

Overall: 41.5 years
Female: 40.3 years
Male: 42.6 years

Spring Bay township Adults

There are 2,029 adults, (464 of whom are seniors) in Spring Bay township.

Sex Ratio

Female: 1,269 (50.1%)
Male: 1,262 (49.9%)

Demographics

The racial composition of Spring Bay township includes 94.23% White, and smaller percentages for Native American, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White2,38594.23%
Two or more races1365.37%
Native American70.28%
Asian30.12%
Race
Population ↓
Percentage (of total)
White582.29%
Two or more races130.51%
Race
Population ↓
Percentage (of total)
White2,32791.94%
Two or more races1234.86%
Native American70.28%
Asian30.12%

Spring Bay township Marital Status

Economics and Income Statistics

Spring Bay township 's average per capita income is $47,744. Household income levels show a median of $75,846. The poverty rate stands at 9.69%.

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$98,750-
Households$75,846$89,095
Families$75,156$96,168
Non Families$34,583$49,114

$47,744

Average Income

$75,846

Median Household Income

9.69%

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)