The 10 Most Diverse Cities In Maine For 2021

We used data and science to determine the most diverse cities in Maine.

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Editor’s Note: We updated this article for 2021. This is our seventh time ranking the most diverse places in Maine.

Most Diverse Cities In Maine

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Race relations in America seem to be hitting a tipping point.

While we still haven't dealt with racism as a society, the election of Donald Trump to the presidency has only flamed the tensions that have been mounting for years.

Part of the reason for that tension? The country as a whole continues to self segregate across race, income, and party lines. But it's not all bad on the race relations front.

There are parts of Maine where there's a high level of diversity -- where people of all walks of life come together. We decided to shine a light on those places today.

Using a standard measure of diversity, we ranked all 19 cities in Maine from most to least diverse.

Here are the 10 most diverse places in Maine for 2021:

  1. Portland
  2. Lewiston
  3. South Portland
  4. Westbrook
  5. Bangor
  6. Biddeford
  7. Auburn
  8. Presque Isle
  9. Waterville
  10. Old Town

So what city is the most diverse in Maine? According to the most Census data, Portland took the number one over all spot for diversity in Maine.

Read on below to see how we crunched the numbers and how your town ranked. To see where Maine ranked as a state, we have a ranking of the most diverse states in Ameria.

And if you already knew these places were diverse, check out:

The 10 Most Diverse Places In Maine For 2021

Portland, ME

Overall SnackAbility


Population: 66,595

HHI: 6,864
% White: 82.3%
% African American: 8.3%
% Asian: 3.5%
More on Portland: PhotosData

Lewiston, ME

Source: Public domain
Overall SnackAbility


Population: 36,095

HHI: 7,429
% White: 85.8%
% African American: 5.3%
% Asian: 1.1%
More on Lewiston: PhotosData

South Portland, ME

Overall SnackAbility


Population: 25,548

HHI: 7,825
% White: 88.2%
% African American: 4.1%
% Asian: 1.6%
More on South Portland: PhotosData

Westbrook, ME

Overall SnackAbility


Population: 18,633

HHI: 7,883
% White: 88.6%
% African American: 4.9%
% Asian: 2.0%
More on Westbrook: PhotosData

Bangor, ME

Source: Public domain
Overall SnackAbility


Population: 32,095

HHI: 8,030
% White: 89.5%
% African American: 1.8%
% Asian: 2.5%
More on Bangor: PhotosData

Biddeford, ME

Overall SnackAbility


Population: 21,462

HHI: 8,053
% White: 89.6%
% African American: 3.0%
% Asian: 3.3%
More on Biddeford: PhotosData

Auburn, ME

Overall SnackAbility


Population: 23,187

HHI: 8,181
% White: 90.3%
% African American: 1.2%
% Asian: 1.2%
More on Auburn: PhotosData

Presque Isle, ME

Overall SnackAbility


Population: 9,116

HHI: 8,463
% White: 91.9%
% African American: 0.7%
% Asian: 1.3%
More on Presque Isle: PhotosData

Waterville, ME

Overall SnackAbility


Population: 16,577

HHI: 8,504
% White: 92.1%
% African American: 0.8%
% Asian: 2.6%
More on Waterville: PhotosData

Old Town, ME

Source: Public domain
Overall SnackAbility


Population: 7,474

HHI: 8,535
% White: 92.3%
% African American: 0.7%
% Asian: 1.0%
More on Old Town: PhotosData

How we determined the most diverse cities in Maine for 2021

We still believe in the accuracy of data -- especially from the census. So that's where we went to get the breakdown of race across Maine.

That lead us to the Census's most recently available data, the 2015-2019 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
* Not hispanic or latino

We limited our analysis to non-CDPs with a population greater than 5,000 people. That left us with 19 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 6,864 (Portland) to 9,380 (Brewer).

Finally, we ranked each city based on the HHI with a lower score being more diverse than a high score. Portland took the distinction of being the most diverse, while Brewer was the least diverse city. You can download the data here.

Read on for more information on how the cities in Maine ranked for diversity or, for a more general take on diversity in america, head over to our ranking of the most diverse cities in America.

There You Have It - Diversity Across Maine

If you're looking for a scientific breakdown of diversity across Maine, this is an accurate list.

If you're curious enough, here are the least diverse places in Maine:

  1. Brewer
  2. Rockland
  3. Gardiner

For more Maine reading, check out:

Detailed List Of The Most Diverse Cities In Maine For 2021

Rank City Population HHI
1 Portland, ME 66,595 6,864
2 Lewiston, ME 36,095 7,429
3 South Portland, ME 25,548 7,825
4 Westbrook, ME 18,633 7,883
5 Bangor, ME 32,095 8,030
6 Biddeford, ME 21,462 8,053
7 Auburn, ME 23,187 8,181
8 Presque Isle, ME 9,116 8,463
9 Waterville, ME 16,577 8,504
10 Old Town, ME 7,474 8,535
11 Belfast, ME 6,688 8,622
12 Augusta, ME 18,605 8,650
13 Caribou, ME 7,710 8,839
14 Ellsworth, ME 7,991 8,992
15 Saco, ME 19,497 8,992
16 Bath, ME 8,319 9,058
17 Gardiner, ME 5,657 9,078
18 Rockland, ME 7,178 9,146
19 Brewer, ME 9,090 9,380

How Is The Area In ?

About Chris Kolmar

Chris Kolmar has been in the real estate business for almost ten years now. He originally worked for Movoto Real Estate as the director of marketing before founding HomeSnacks.

He believes the key to finding the right place to live comes down to looking at the data, reading about things to do, and, most importantly, checking it out yourself before you move.

If you've been looking for a place to live in the past several years, you've probably stumbled upon his writing already.

You can find out more about him on LinkedIn or his website.