Racial diversity in Delaware is a mixed bag.
There are parts of Delaware where there’s a high level of diversity. But where will you find the most diverse places in Delaware?
To answer that question, we went to the US Census data. Using Saturday Night Science, we measured the Gini coefficient for all 11 cities in Delaware to rank them from most to least diverse.
Table Of Contents: Top Ten | Methodology | Summary | Table
So what city is the most diverse in Delaware? According to the most Census data, Dover took the number one over all spot for diversity in Delaware.
Read on below to see how we crunched the numbers and how your town ranked. To see where Delaware ranked as a state, we have a ranking of the most diverse states in Ameria.
For more Delaware reading:
The 10 Most Diverse Places In Delaware For 2025
/10
Population: 39,491
HHI: 3,320
% White: 35.0%
% African American: 43.9%
% Hispanic: 11.3%
% Asian: 2.8%
More on Dover: Data
/10
Population: 8,255
HHI: 3,404
% White: 50.5%
% African American: 24.1%
% Hispanic: 10.5%
% Asian: 2.2%
More on Seaford: Data
/10
Population: 12,193
HHI: 3,520
% White: 51.6%
% African American: 24.7%
% Hispanic: 14.8%
% Asian: 4.6%
More on Milford: Data
/10
Population: 6,189
HHI: 3,697
% White: 48.6%
% African American: 16.4%
% Hispanic: 32.7%
% Asian: 0.5%
More on Elsmere: Data
/10
Population: 71,124
HHI: 3,702
% White: 29.6%
% African American: 51.6%
% Hispanic: 11.9%
% Asian: 1.6%
More on Wilmington: Data
/10
Population: 7,456
HHI: 3,858
% White: 31.1%
% African American: 10.1%
% Hispanic: 52.5%
% Asian: 0.2%
More on Georg: Data
/10
Population: 24,071
HHI: 3,885
% White: 55.1%
% African American: 27.8%
% Hispanic: 5.7%
% Asian: 5.7%
More on Middl: Data
/10
Population: 13,031
HHI: 4,020
% White: 54.9%
% African American: 30.1%
% Hispanic: 8.5%
% Asian: 2.9%
More on Smyrna: Data
/10
Population: 7,152
HHI: 4,634
% White: 64.8%
% African American: 16.9%
% Hispanic: 10.0%
% Asian: 1.2%
More on Millsboro:
/10
Population: 30,309
HHI: 4,642
% White: 65.9%
% African American: 10.7%
% Hispanic: 10.0%
% Asian: 8.0%
More on Newark: Data
Methodology: How we determined the most diverse cities in Delaware for 2025
We still believe in the accuracy of data — especially from the Census — and Saturday Night Science. So that’s where we went to get the race breakdown across Delaware.
That leads us to the Census’s most recently available data, the 2019-2023 American Community Survey data from the US Census.
Specifically, we looked at table B03002: HISPANIC OR LATINO ORIGIN BY RACE. Here are the category names as defined by the Census:
- White alone*
- Black or African American alone*
- American Indian and Alaska Native alone*
- Asian alone*
- Native Hawaiian and Other Pacific Islander alone*
- Some other race alone*
- Two or more races*
- Hispanic or Latino
We limited our analysis to non-CDPs with a population greater than 5,000 people. That left us with 11 cities.
We then calculated the HHI for each city by finding the racial breakdown of a city in percent terms, squaring them, and then adding the squares together. This left us with scores ranging from 3,320 (Dover) to 4,965 (New Castle).
Finally, we ranked each city based on the HHI, with a lower score being more diverse than a high score. Dover took the distinction of being the most diverse, while New Castle was the least diverse city.
We updated this article for 2025. This report is our tenth time ranking the most diverse places in Delaware.
Summary: Diversity Across Delaware
If you’re looking for a scientific breakdown of diversity across Delaware, this is an accurate list.
The most diverse cities in Delaware are Dover, Seaford, Milford, Elsmere, Wilmington, Georg, Middl, Smyrna, Millsboro, and Newark.
If you’re curious enough, here are the least diverse places in Delaware:
- New Castle
- Newark
- Millsboro
For more Delaware reading, check out:
- Best Places To Live In Delaware
- Cheapest Places To Live In Delaware
- Most Dangerous Cities In Delaware
- Best Places To Raise A Family In Delaware
- Safest Places In Delaware
- Worst Places To Live In Delaware
Race By City In Delaware For 2025
| Rank | City | Population | HHI | % White | % Black | % Hispanic | % Asian |
|---|---|---|---|---|---|---|---|
| 1 | Dover, DE | 39,491 | 3,320 | 35.0% | 43.9% | 11.3% | 2.8% |
| 2 | Seaford, DE | 8,255 | 3,404 | 50.5% | 24.1% | 10.5% | 2.2% |
| 3 | Milford, DE | 12,193 | 3,520 | 51.6% | 24.7% | 14.8% | 4.6% |
| 4 | Elsmere, DE | 6,189 | 3,697 | 48.6% | 16.4% | 32.7% | 0.5% |
| 5 | Wilmington, DE | 71,124 | 3,702 | 29.6% | 51.6% | 11.9% | 1.6% |
| 6 | Georg, DE | 7,456 | 3,858 | 31.1% | 10.1% | 52.5% | 0.2% |
| 7 | Middl, DE | 24,071 | 3,885 | 55.1% | 27.8% | 5.7% | 5.7% |
| 8 | Smyrna, DE | 13,031 | 4,020 | 54.9% | 30.1% | 8.5% | 2.9% |
| 9 | Millsboro, DE | 7,152 | 4,634 | 64.8% | 16.9% | 10.0% | 1.2% |
| 10 | Newark, DE | 30,309 | 4,642 | 65.9% | 10.7% | 10.0% | 8.0% |
| 11 | New Castle, DE | 5,519 | 4,965 | 64.5% | 27.8% | 5.2% | 0.9% |