Leavenworth Population

1860–2026

36,991

2026 projection

1% since 2020 (decrease)

010K20K30K40K186018801900192019401960198020002020

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 Leavenworth. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202636,991-210.06%
202537,012-2300.62%
202437,242+1910.52%
202337,051+280.08%
202237,023-1770.48%
202137,200-1510.40%
202037,351+510.14%
201937,300-260.07%
201837,326+430.12%
201737,283+2020.54%

Showing 10 of 32 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

Leavenworth has a population change lower than Leavenworth County, Kansas, and the U.S.

  • Leavenworth County+3.2%
  • United States+3.1%
  • Kansas+1.3%
  • Leavenworth−0.8%

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.

Leavenworth Demographics

35.9median age

Median age

Female36.6 yrs
Male35.4 yrs

Adults

28,621
4,880 seniors (65+) · 17% of adults23,741 other adults

Sex

Female 44.3% · 16,469Male 55.7% · 20,726

Population by age

MaleFemale85+ years, male: 16385+ years, female: 32180–84 years, male: 18580–84 years, female: 54575–79 years, male: 40075–79 years, female: 58870–74 years, male: 44570–74 years, female: 59965–69 years, male: 93465–69 years, female: 70060–64 years, male: 98060–64 years, female: 1,06355–59 years, male: 1,26155–59 years, female: 1,07950–54 years, male: 1,30250–54 years, female: 89045–49 years, male: 1,46545–49 years, female: 79640–44 years, male: 1,25940–44 years, female: 81135–39 years, male: 2,19035–39 years, female: 1,46130–34 years, male: 1,79430–34 years, female: 1,34325–29 years, male: 1,74425–29 years, female: 90520–24 years, male: 1,58220–24 years, female: 1,08315–19 years, male: 92315–19 years, female: 90110–14 years, male: 1,19810–14 years, female: 1,2615–9 years, male: 1,4105–9 years, female: 1,0380–4 years, male: 1,4910–4 years, female: 1,08585+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 372 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

Leavenworth Income

$72,987median household income

Median household income

$72,987

Half of households earn more, half earn less

Median earnings

$45,012

Typical yearly pay for a worker 25 or older.

Poverty rate

11.7%

About 1 in 9 residents

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

Leavenworth Marital Status

46% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married46%44%49%
Never married31%37%25%
Divorced15%15%15%
Widowed5%2%9%
Separated3%3%2%

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

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources