Waltham Flag

Waltham

County:
LaSalle County
County Seat:
No
Area (mi²):
36.035
State:
Illinois

Waltham is located in LaSalle County, Illinois. Waltham has a 2025 population of 416 . Waltham is currently declining at a rate of 0% annually and its population has decreased by -0.95% since the most recent census, which recorded a population of 420 in 2020.

The average household income in Waltham is $93,059 with a poverty rate of 2.92%. The median age in Waltham is 43.3 years: 39.9 years for males, and 43.5 years for females. For every 100 females there are 64.8 males.

416
Total Population
12
Density (mi²)

Waltham Population

Waltham Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Waltham includes 94.78% White, and smaller percentages for and multiracial populations.

Population by Race

White (94.78%)

Two or more races (5.22%)

Race
Population
Percentage (of total)
White61794.78%
Two or more races345.22%

Waltham Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Waltham's average per capita income is $40,536. Household income levels show a median of $82,917. The poverty rate stands at 2.92%.

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$110,982-
Families$89,167$105,621
Households$82,917$93,059
Non Families$66,250$62,911

$40,536

Average Income

$82,917

Median Household Income

2.92%

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)