St. Charles Population

1870–2026

4,100

2026 projection

1.7% since 2020 (increase)

01K2K3K4K5K18801900192019401960198020002020

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 St. Charles. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20264,100+100.24%
20254,090+200.49%
20244,070+160.39%
20234,054+230.57%
20224,031-200.49%
20214,051+210.52%
20204,030+2536.70%
20193,777-60.16%
20183,783+300.80%
20173,753+391.05%

Showing 10 of 31 years.

St. Charles Demographics

39.5median age

Median age

Female40.4 yrs
Male37.9 yrs

Adults

3,061
560 seniors · 18%2,501 other adults

Sex

Female 47% · 1,899Male 53% · 2,138

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 40 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

St. Charles Income

$96,200median household income

Median household income

$96,200

Half of households earn more, half earn less

Median earnings

$57,704

Typical yearly pay for a worker 25 or older.

Poverty rate

3.2%

About 1 in 32 residents

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

St. Charles Marital Status

53% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married53%49%57%
Never married27%29%25%
Divorced16%19%12%
Widowed4%3%6%
Separated0%0%0%

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