Delaware Population

1810–2026

47,579

2026 projection

15.2% since 2020 (increase)

010K20K30K40K50K1850190019502000

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 Delaware. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202647,579+9432.02%
202546,636+1,1772.59%
202445,459+4601.02%
202344,999+1,0192.32%
202243,980+9442.19%
202143,036+1,7344.20%
202041,302+8071.99%
201940,495+1,3163.36%
201839,179+4481.16%
201738,731+4191.09%

Showing 10 of 37 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

Delaware is growing faster than Ohio and the U.S., and slower than Delaware County.

  • Delaware County+12.5%
  • Delaware+11.9%
  • United States+3.1%
  • Ohio+0.9%

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.

Delaware Demographics

36.9median age

Median age

Female37.2 yrs
Male36.6 yrs

Adults

33,975
6,573 seniors (65+) · 19% of adults27,402 other adults

Sex

Female 50.6% · 22,583Male 49.4% · 22,006

Population by age

MaleFemale85+ years, male: 22685+ years, female: 45180–84 years, male: 29880–84 years, female: 47775–79 years, male: 39975–79 years, female: 67070–74 years, male: 80770–74 years, female: 85365–69 years, male: 1,18765–69 years, female: 1,20560–64 years, male: 1,11060–64 years, female: 1,30355–59 years, male: 94755–59 years, female: 90550–54 years, male: 1,34250–54 years, female: 1,28445–49 years, male: 1,70745–49 years, female: 1,48440–44 years, male: 1,89740–44 years, female: 1,70735–39 years, male: 1,56735–39 years, female: 1,56430–34 years, male: 1,37630–34 years, female: 1,66525–29 years, male: 1,29525–29 years, female: 1,48920–24 years, male: 1,73320–24 years, female: 1,61315–19 years, male: 1,62815–19 years, female: 1,43410–14 years, male: 1,61110–14 years, female: 1,4195–9 years, male: 1,2935–9 years, female: 1,7080–4 years, male: 1,5830–4 years, female: 1,35285+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

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 446 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

Delaware Income

$99,786median household income

Median household income

$99,786

Half of households earn more, half earn less

Median earnings

$60,604

Typical yearly pay for a worker 25 or older.

Poverty rate

7.8%

About 1 in 13 residents

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

Delaware 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%54%52%
Never married29%33%26%
Divorced11%10%12%
Widowed5%3%8%
Separated1%<1%2%

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

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources