ZIP Code 06340 - Groton Connecticut

ZIP Code 06340 is located in Groton Connecticut. Portions of 06340 are also in Conning Towers-Nautilus Park and Noank and Poquonock Bridge and Long Hill (New London County) and Groton (town) and Ledyard. 06340 is entirely within New London County. Regionally, 06340 is located in the Hartford-New Haven Area.

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ZIP Code 06340 Quick Stats

ZIP Code NameGroton
Primary CountyNew London County
ZIP Code TypeStandard
Population (2022)29,672
Area Code(s)860 / 959
Current Time

ZIP Code 06340 Map

06340 Demographics

06340 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Connecticut based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 06340 is White. The majority race/ethnicity attending public schools in 06340 is White. The current unemployment level in 06340 is 3.5%.

Population Growth Rate0.00%
Population Density1,202 People per Square Mile
Total Households12,024
Percentage High Income Households3.6%
Median Household Income (2021)$69,736
Average Adjusted Gross Income (2021)$407,380
Current Unemployment Rate (June 2024)3.5%
Majority Race/EthnictyWhite - 69.30%
Public School Majority Race/EthnictyWhite - 49.40%

06340 Race/Ethnicty Breakdown

Native American1520.49%
Hawaiian/Pac. Islander00%

06340 Public School Race/Ethnicty Breakdown

Native American441.17%
Hawaiian/Pac. Islander180.48%

06340 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College1,2006.93%
Bachelor Degree3,29719.04%
High School Diploma5,08729.38%
No High School Diploma2321.34%
GED or Alternate5092.94%
1 or More Years of College3,28418.97%
Associates Degree1,4528.39%
Masters Degree1,5639.03%
Professional Degree3071.77%
Doctorate Degree3822.21%

06340 Geography

Adjacent ZIP Codes
Cities/Towns in 06340
RegionHartford-New Haven Area
Metropolitan/Micropolitan Stat AreaNorwich-New London, CT
Time ZoneEastern Daylight Time
IANA TimezoneAmerica/New_York
Area25 Square Miles

06340 Politics

US Congressional Districts in 06340
Connecticut State Senate Districts in 06340
Connecticut State House of Representatives Districts in 06340

06340 Weather and Climate Data

Plant Hardiness ZoneZone 6b: -5F to 0F
Average First Frost DateOctober 11 - 20
Average Last Frost DateApril 21 - 31
Koppen-Geiger Climate ZoneDfb - Humid Continental Mild Summer, Wet All Year
Ecoregion59c - Southern New England Coastal Plains and Hills

06340 Annual Climate Data

Avg Min Temp (°F)20212938475663625443352541
Avg Max Temp (°F)38394757677581807363534260
Avg Precip (In.)4.433.564.54.283.853.663.344.

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