City rankings

Largest Cities in Delaware

Wilmington ranks #1 in Delaware for largest cities at 71,727.

This ranking orders all 11 qualifying Delaware cities by population, computed from the named federal field or time-series described below. It is one of 9 transparent ranking lenses Areazine publishes for Delaware, each answering one direct question from official data. Compare Wilmington's standing against every other Delaware city ranked below.

Data updated 2026-08-21

11
Cities ranked
71,727
#1 Wilmington
12,431
Lowest, Pike Creek Valley

What this Delaware ranking shows

According to the U.S. Census Bureau's American Community Survey (ACS) 5-year estimates, the CDC PLACES population-level health analysis, and the CMS Hospital Compare quality data, Areazine ranks U.S. cities across more than 19,000 incorporated places, census-designated places, and consolidated city-county governments. State-level city rankings combine these federal datasets to produce intra-state comparisons across demographics, economics, health outcomes, and hospital quality.

Wilmington leads 11 Delaware cities at 71,727, while Pike Creek Valley sits at the bottom with 12,431 - a total spread of 59,296 on population. The top 5 occupy 83% of that range, indicating a wide separation between leaders and the rest of the field.

The median Delaware city in this list sits at 15,546, 56,181 behind Wilmington. See our methodology for ranking construction, data vintage, refresh cadence, and the federal upstream tables we join, and triangulate via the 8 other Delaware rankings below, cities that lead on multiple lenses are the most robust signals.

Top 5 - Largest Cities

Top 5 Delaware cities ranked by population
Rank City population Population
#1 Wilmington 71,727 71K
#2 Dover 39,837 39K
#3 Newark 30,330 34K
#4 Middletown 24,661 20K
#5 Bear 22,370 19K

Does population track with city size?

Largest Cities vs. population, top 25 ranked cities

Source: U.S. Census Bureau (population), population per methodology 2×2 strategic matrix plotting 11 entities by Population (X) and population (Y), with a crosshair dividing the plot into four quadrants. Large & strongSmall & strongLarge & weakSmall & weak 020,00040,00060,00080,000 020,00040,00060,00080,000 Population population WilmingtonDoverNewarkMiddletownBearGlasgowBrooksideHockessinSmyrnaMilfordPike Creek Valley
Source: U.S. Census Bureau (population), population per methodology

Largest Cities 11

More Delaware Rankings 8

Reading this Delaware ranking responsibly

Single-metric rankings are useful precisely because they are honest about what they measure. A "highest income" ranking does not tell you that the top-ranked city is the best place to live in Delaware; it tells you that, among cities of population ten thousand and above in Delaware that have a published median household income field in the most recent American Community Survey five-year estimates, this city has the highest such value. That precise definition matters, because composite "best places" lists from real-estate marketing sites and lifestyle magazines often combine income with subjective weights on schools, walkability, and amenities, producing a score whose components are not disclosed and whose ordering is not reproducible. Areazine's editorial commitment is to keep the underlying field, source, and vintage visible so the reader can audit any rank in this list against the canonical federal record.

Cross-checking against other rankings is a useful sanity test. A city that appears in the top ten on three or more different rankings, for example, highest income, most educated, and lowest poverty, is showing a robust signal across multiple independent dimensions. A city that appears in the top ten on only one ranking and middling on the others is showing a narrower signal, often driven by a single statistical artifact (a small population pulling the per-capita measure, a recent acquisition spike inflating median home value, an outlier survey year). The other nine Delaware rankings linked above provide that cross-check at zero extra effort.

Data Sources

Population and economic data from the Census Bureau American Community Survey (2024 5-year estimates). Health data from the CDC PLACES (2023). Ranking computations use U.S. Census Bureau reference geographies. Crime statistics, where referenced, originate from the FBI Uniform Crime Reporting program (also accessible via the Crime Data Explorer).