Wentzville Population

1880–2026

50,306

2026 projection

13.4% since 2020 (increase)

010K20K30K40K50K60K18801900192019401960198020002020

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 Wentzville. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202650,306+8111.64%
202549,495+9561.97%
202448,539+6351.33%
202347,904+3420.72%
202247,562+1,6653.63%
202145,897+1,5253.44%
202044,372+1,1612.69%
201943,211+1,0302.44%
201842,181+1,8974.71%
201740,284+2,1565.65%

Showing 10 of 30 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

Wentzville is growing faster than St. Charles County, Missouri, and the U.S.

  • Wentzville+9.3%
  • St. Charles County+4.9%
  • United States+3.1%
  • Missouri+1.9%

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.

Wentzville Demographics

36.5median age

Median age

Female38.5 yrs
Male35 yrs

Adults

33,075
6,519 seniors (65+) · 20% of adults26,556 other adults

Sex

Female 49.3% · 23,202Male 50.7% · 23,859

Population by age

MaleFemale85+ years, male: 12785+ years, female: 35380–84 years, male: 29680–84 years, female: 53975–79 years, male: 74975–79 years, female: 81370–74 years, male: 81170–74 years, female: 86165–69 years, male: 91765–69 years, female: 1,05360–64 years, male: 69060–64 years, female: 1,20655–59 years, male: 1,12955–59 years, female: 92450–54 years, male: 1,35950–54 years, female: 1,15145–49 years, male: 1,74145–49 years, female: 1,83440–44 years, male: 2,09340–44 years, female: 2,38435–39 years, male: 2,01635–39 years, female: 1,83830–34 years, male: 1,53930–34 years, female: 1,47325–29 years, male: 1,02725–29 years, female: 1,10220–24 years, male: 88720–24 years, female: 1,09215–19 years, male: 2,09515–19 years, female: 1,57210–14 years, male: 2,32910–14 years, female: 2,0115–9 years, male: 2,3535–9 years, female: 1,6920–4 years, male: 1,7010–4 years, female: 1,30485+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–41K1K2K2K

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 471 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

Wentzville Income

$112,394median household income

Median household income

$112,394

Half of households earn more, half earn less

Median earnings

$67,092

Typical yearly pay for a worker 25 or older.

Poverty rate

5.4%

About 1 in 19 residents

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

Wentzville Marital Status

59% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married59%60%58%
Never married26%29%23%
Divorced10%9%12%
Widowed4%1%7%
Separated1%<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