Middletown Population

1850–2026

26,341

2026 projection

13.6% since 2020 (increase)

05K10K15K20K25K30K186018801900192019401960198020002020

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 Middletown. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202626,341+5432.10%
202525,798+2470.97%
202425,551+4481.78%
202325,103+3881.57%
202224,715+4491.85%
202124,266+1,0744.63%
202023,192+5962.64%
201922,596+5392.44%
201822,057+7063.31%
201721,351+5142.47%

Showing 10 of 33 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

Middletown is growing faster than New Castle County, Delaware, and the U.S.

  • Middletown+10.3%
  • Delaware+6.9%
  • United States+3.1%
  • New Castle County+3.0%

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.

Middletown Demographics

38.7median age

Median age

Female40.4 yrs
Male35 yrs

Adults

17,858
3,806 seniors (65+) · 21% of adults14,052 other adults

Sex

Female 56.1% · 13,835Male 43.9% · 10,826

Population by age

MaleFemale85+ years, male: 6585+ years, female: 35880–84 years, male: 34480–84 years, female: 20475–79 years, male: 27075–79 years, female: 55970–74 years, male: 30970–74 years, female: 59065–69 years, male: 23865–69 years, female: 86960–64 years, male: 56260–64 years, female: 52555–59 years, male: 52255–59 years, female: 94650–54 years, male: 1,08250–54 years, female: 85845–49 years, male: 74745–49 years, female: 1,18040–44 years, male: 68240–44 years, female: 93335–39 years, male: 58935–39 years, female: 98430–34 years, male: 71930–34 years, female: 1,19525–29 years, male: 38325–29 years, female: 43220–24 years, male: 74320–24 years, female: 16515–19 years, male: 82815–19 years, female: 1,38910–14 years, male: 1,47110–14 years, female: 1,6305–9 years, male: 8505–9 years, female: 5360–4 years, male: 4220–4 years, female: 48285+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 247 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

Middletown Income

$112,831median household income

Median household income

$112,831

Half of households earn more, half earn less

Median earnings

$72,839

Typical yearly pay for a worker 25 or older.

Poverty rate

8.3%

About 1 in 12 residents

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

Middletown Marital Status

50% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married50%60%42%
Never married31%31%32%
Divorced12%7%16%
Widowed6%2%9%
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