Connecticut Census Data Comparison Tool: Compare Cities, Counties and ZIP Codes

The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.

	Name	County	Diversity Index
1.	Pleasant Valley Census Designated Place	Northwest Hills	11.5
2.	Riverton Census Designated Place	Northwest Hills	12.2
3.	Quasset Lake Census Designated Place	Northeastern Connecticut	13.9
4.	Borough of Stonington	Southeastern Connecticut	16.4
5.	Somers Census Designated Place	Capitol	18.5
6.	Borough of Groton Long Point	Southeastern Connecticut	19.4
7.	Higganum Census Designated Place	Lower Connecticut River Valley	20.6
8.	Lakeside Woods Census Designated Place	Western Connecticut	21.2
9.	Bridgewater Census Designated Place	Western Connecticut	21.4
10.	Essex Village Census Designated Place	Lower Connecticut River Valley	21.7
11.	Norfolk Census Designated Place	Northwest Hills	21.8
12.	Northwest Harwinton Census Designated Place	Northwest Hills	22.1
13.	South Woodstock Census Designated Place	Northeastern Connecticut	22.1
14.	West Cornwall Census Designated Place	Northwest Hills	22.1
15.	Heritage Village Census Designated Place	Naugatuck Valley	22.3
16.	Lake Chaffee Census Designated Place	Northeastern Connecticut	22.5
17.	Madison Center Census Designated Place	South Central Connecticut	22.5
18.	New Hartford Center Census Designated Place	Northwest Hills	22.7
19.	Borough of Litchfield	Northwest Hills	22.8
20.	Bethlehem Village Census Designated Place	Naugatuck Valley	23.2

Connecticut Census Data Comparison Tool

Ranking Cities and Towns by Diversity Index (last updated July 1, 2025)

Connecticut Census Data Comparison Tool

Connecticut