Middletown Population 2026
Middletown has a population of 20,372, making it the #2332 biggest city in 🇺🇸 United States, located in Delaware. It is about 432× smaller than New York City, the country's biggest city.
Population (city proper)
20,372
Rank in United States
#2332
Coordinates
39.45°N, 75.72°W
~21 m elevation · America/New_York
Distance to capital (Washington)
129 km
80 miles, straight line
Other big cities in Delaware
| City | Population | Rank in United States |
|---|---|---|
| Wilmington | 70,898 | #545 |
| Dover | 39,403 | #1135 |
| Newark | 33,817 | #1357 |
| Bear | 19,371 | #2454 |
Cities near Middletown
FAQ
What is the population of Middletown?
Middletown has a population of 20,372 (city proper, latest official figure via GeoNames), making it the #2332 biggest city in United States.
What state is Middletown in?
Middletown is located in Delaware, United States.
Is Middletown the capital of United States?
No, the capital of United States is Washington D.C., about 129 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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