Middletown Population

1870–2026

5,081

2026 projection

2.8% since 2020 (increase)

01K2K3K4K5K6K18801900192019401960198020002020

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.
20265,081+250.49%
20255,056+70.14%
20245,049+200.40%
20235,029+60.12%
20225,023+430.86%
20214,980+370.75%
20204,943+881.81%
20194,855+1232.60%
20184,732+1002.16%
20174,632+751.65%

Showing 10 of 31 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 Maryland, and slower than Frederick County and the U.S.

  • Frederick County+11.0%
  • United States+3.1%
  • Middletown+2.2%
  • Maryland+1.4%

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

40.8median age

Median age

Female40.9 yrs
Male40.4 yrs

Adults

3,650
730 seniors (65+) · 20% of adults2,920 other adults

Sex

Female 50.8% · 2,546Male 49.2% · 2,468

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 50 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

$173,333median household income

Median household income

$173,333

Half of households earn more, half earn less

Median earnings

$91,250

Typical yearly pay for a worker 25 or older.

Poverty rate

1.1%

About 1 in 94 residents

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

Middletown Marital Status

65% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married65%66%64%
Never married22%23%20%
Divorced7%5%8%
Widowed6%5%7%
Separated<1%1%0%

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