Crystal Lake, CT Profile: Facts, Map & Data


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Crystal Lake, Connecticut - Basic Facts

The Crystal Lake Census Designated Place had a population of 2,023 as of July 1, 2017. Crystal Lake ranks in the lower quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Connecticut. See peer rankings below.

The primary coordinate point for Crystal Lake is located at latitude 41.9331 and longitude -72.3744 in Tolland County. The formal boundaries for the Crystal Lake Census Designated Place (see map below) encompass a land area of 7.82 sq. miles and a water area of 0.28 sq. miles. Tolland County is in the Eastern time zone (GMT -5). The elevation is 682 feet.

The Crystal Lake Census Designated Place (GNIS ID: 2377812) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Crystal Lake Census Designated Place is located within Town of Ellington, a minor civil division (MCD) of Tolland County.

Beneath the boundary map are tables with Crystal Lake population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Crystal Lake: Square Pond.

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Crystal Lake Census Designated Place, CT Boundary Map

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Crystal Lake, CT Data & Demographics (As of July 1, 2017)


Total Population 2,023
Daytime Population: Workers 214
Daytime Population: Residents 896
Total Daytime Population (TDP) 1,110
Ratio TDP/Total Population1 0.55
Population in Households 2,023
Population in Familes 1,781
Population in Group Qrtrs 0
Population Density2 259
Diversity Index3 16


Median Household Income $101,709
Average Household Income $122,318
Per Capita Income $43,771


Total Housing Units 821 (100%)
Owner Occupied HU 656 (79.9%)
Renter Occupied HU 72 ( 8.8%)
Vacant Housing Units 93 (11.3%)
Median Home Value $316,818
Average Home Value $364,275


Total Households 728
Average Household Size 2.78
Family Households 565
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 0.54% 0.4%
Households 0.38% 0.35%
Families 0.27% 0.28%
Median Household Income   2.16%
Per Capita Income   2.73%

Crystal Lake, CT - Peer Comparisons by Rank and Percentile

The table below compares Crystal Lake to the other 142 incorporated cities, towns and CDPs in Connecticut by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 97 32nd
Population Density # 135 6th
Diversity Index # 119 17th
Median Household Income # 23 85th
Per Capita Income # 56 61st

Additional comparisons and rankings can be made with a VERY EASY TO USE Connecticut Census Data Comparison Tool.

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