06340 ZIP Code
Groton, Connecticut
December 19, 2025
| ZIP Code: | 06340 |
| City/Town: | Groton |
| County: | Southeastern Connecticut |
| State: | Connecticut |
| ZIP Type: | Standard |
| Population: | 29,672 |
| Median Household Income: | $76,138 |
| Per Capita Income: | $42,528 |
| Total Housing Units: | 14,193 |
| Median Home Value: | $248,000 |
| Land Area: | 22.5 sq miles
58.4 sq km |
| Water Area: | 4.7 sq miles
12.2 sq km |
| Coordinates: | 41.3544, -72.0403 |
Population Information (06340 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total Population: | 29,672 | -- | -- |
| Male: | 16,209 | 54.6% | 49.6% |
| Female: | 13,463 | 45.4% | 50.4% |
| Median Age: | 33.1 yrs | -- | 38.5 yrs |
| Under 5 years: | 1,933 | 6.5% | 5.7% |
| 5 to 9 years: | 1,430 | 4.8% | 6.0% |
| 10 to 14 years: | 1,485 | 5.0% | 6.5% |
| 15 to 19 years: | 1,922 | 6.5% | 6.6% |
| 20 to 24 years: | 2,899 | 9.8% | 6.7% |
| 25 to 34 years: | 6,070 | 20.5% | 13.7% |
| 35 to 44 years: | 2,785 | 9.4% | 12.9% |
| 45 to 54 years: | 2,992 | 10.1% | 12.4% |
| 55 to 59 years: | 1,782 | 6.0% | 6.5% |
| 60 to 64 years: | 1,550 | 5.2% | 6.4% |
| 65 to 74 years: | 2,569 | 8.7% | 9.7% |
| 75 to 84 years: | 1,171 | 3.9% | 4.8% |
| 85 years and over: | 1,084 | 3.7% | 2.0% |
Housing Information (06340 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Median home value: | $248,000 | -- | $281,900 |
| Median rooms: | 5.0 | -- | 5.5 |
| Median rent: | $1,423 / mo. | -- | $1,268 / mo. |
| Total housing units: | 14,193 | -- | -- |
| Occupied housing units: | 12,780 | 90.0% | 38.0% |
| Vacant housing units: | 1,413 | 10.0% | 4.6% |
| Housing tenure: | -- | -- | -- |
| Owner-occupied: | 5,705 | 44.6% | 64.8% |
| Renter-occupied: | 7,075 | 55.4% | 35.2% |
Educational Attainment (06340 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Population 25 years and over: | 20,003 | -- | -- |
| Less than 9th grade: | 681 | 3.4% | 4.7% |
| 9th to 12th grade, no diploma: | 747 | 3.7% | 6.1% |
| High school graduate: | 5,375 | 26.9% | 26.4% |
| Some college, no degree: | 4,503 | 22.5% | 19.7% |
| Associate degree: | 1,688 | 8.4% | 8.7% |
| Bachelor's degree: | 4,148 | 20.7% | 20.9% |
| Graduate or professional degree: | 2,861 | 14.3% | 13.7% |
| Percent high school graduate or higher: | -- | 92.9% | 89.1% |
| Percent bachelor's degree or higher: | -- | 35.0% | 34.3% |
Income Information (06340 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median household income: | $76,138 / yr. | $75,149 / yr. |
| Mean household income: | $95,903 / yr. | $105,833 / yr. |
| Median family income: | $82,308 / yr. | $92,646 / yr. |
| Per capita income: | $42,528 / yr. | $41,261 / yr. |
Employment (06340 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| In labor force: | 16,885 | -- | 63.5% |
| Employed: | 13,525 | 94.3% | 96.4% |
| Unemployed: | 816 | 5.7% | 5.3% |
| Not in labor force: | 7,545 | -- | -- |
| Class of Worker: | -- | -- | -- |
| Private wage and salary: | 11,092 | 82.0% | 79.7% |
| Government workers: | 1,843 | 13.6% | 14.2% |
| Self-employed: | 574 | 4.2% | 5.9% |
| Unpaid family workers: | 16 | 0.1% | 0.1% |
Race & Ethnicity (06340 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Race (one race): | -- | -- | -- |
| White: | 21,789 | 73.4% | 61.6% |
| Black or African American: | 1,903 | 6.4% | 12.4% |
| American Indian/Alaska Native: | 113 | 0.4% | 1.1% |
| Asian: | 2,109 | 7.1% | 6.0% |
| Native Hawaiian/Pacific Islander: | 0 | 0.0% | 0.2% |
| Some other race: | 734 | 2.5% | 8.4% |
| Two or more races: | 3,024 | 10.2% | 10.2% |
| Hispanic or Latino (any race): | 1,681 | 5.7% | 18.7% |
| Mexican: | 3,671 | 12.4% | 11.2% |
| Puerto Rican: | 644 | 2.2% | 1.8% |
| Cuban: | 1,825 | 6.2% | 0.7% |
| Other Hispanic or Latino: | 53 | 0.2% | 5.0% |
| Not Hispanic or Latino: | 1,149 | 3.9% | 81.1% |
Income Distribution (06340 zip code)
| Household Income | Households | Percent% | US AvgUS |
|---|---|---|---|
| Less than $10,000: | 456 | 3.6% | 4.9% |
| $10,000 to $14,999: | 402 | 3.1% | 3.8% |
| $15,000 to $24,999: | 850 | 6.7% | 7.0% |
| $25,000 to $34,999: | 933 | 7.3% | 7.4% |
| $35,000 to $49,999: | 1,511 | 11.8% | 10.7% |
| $50,000 to $74,999: | 2,056 | 16.1% | 16.1% |
| $75,000 to $99,999: | 2,380 | 18.6% | 12.8% |
| $100,000 to $149,999: | 2,008 | 15.7% | 17.1% |
| $150,000 to $199,999: | 994 | 7.8% | 8.8% |
| $200,000 or more: | 1,190 | 9.3% | 11.4% |
Commute to Work (06340 zip code)
| Commute Method | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Drove alone: | 11,296 | 83.5% | 67.8% |
| Carpooled: | 1,015 | 7.5% | 8.7% |
| Public transportation: | 246 | 1.8% | 4.2% |
| Walked: | 1,117 | 8.3% | 2.5% |
| Other means: | 330 | 2.4% | 0.9% |
| Worked from home: | 1,636 | 12.1% | 13.8% |
| Mean travel time to work: | 17.8 min | -- | 26.7 min |
Industry (06340 zip code)
| Industry Sector | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Agriculture, forestry, fishing, mining: | 14 | 0.1% | 1.6% |
| Construction: | 707 | 5.2% | 6.9% |
| Manufacturing: | 2,273 | 16.8% | 10.0% |
| Wholesale trade: | 252 | 1.9% | 2.4% |
| Retail trade: | 1,188 | 8.8% | 11.0% |
| Transportation, warehousing, utilities: | 435 | 3.2% | 5.8% |
| Information: | 134 | 1.0% | 1.9% |
| Finance, insurance, real estate: | 561 | 4.1% | 6.7% |
| Professional, scientific, management: | 1,563 | 11.6% | 12.1% |
| Education, health care, social services: | 3,412 | 25.2% | 23.3% |
| Arts, entertainment, food services: | 1,707 | 12.6% | 9.0% |
| Other services: | 584 | 4.3% | 4.7% |
| Public administration: | 695 | 5.1% | 4.7% |
Poverty Status (06340 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Poverty Rate: | -- | 9.7% | 8.8% |
| All people below poverty level: | -- | -- | -- |
| Under 18 years: | -- | -- | 16.3% |
| 18 to 64 years: | -- | -- | 11.0% |
| 65 years and over: | -- | -- | 10.3% |
Health Insurance (06340 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| With health insurance: | 25,650 | 86.4% | 91.3% |
| Private health insurance: | 19,296 | 65.0% | 67.6% |
| Public health coverage: | 9,955 | 33.6% | 35.9% |
| Without health insurance: | 1,026 | 3.5% | 8.7% |
Benefits & Assistance (06340 zip code)
| Households with: | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Earnings: | 10,147 | 79.4% | 77.4% |
| Social Security income: | 3,347 | 26.2% | 31.0% |
| Retirement income: | 3,035 | 23.7% | 21.8% |
| Supplemental Security Income (SSI): | 515 | 4.0% | 4.5% |
| Cash public assistance income: | 651 | 5.1% | 1.8% |
| SNAP (food stamps) benefits: | 1,527 | 11.9% | 11.4% |
Housing Types (06340 zip code)
| Structure Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| 1-unit, detached: | 5,435 | 38.3% | 61.4% |
| 1-unit, attached: | 1,478 | 10.4% | 6.1% |
| 2 units: | 1,174 | 8.3% | 3.4% |
| 3 or 4 units: | 1,415 | 10.0% | 4.3% |
| 5 to 9 units: | 1,318 | 9.3% | 4.6% |
| 10 to 19 units: | 1,114 | 7.8% | 4.3% |
| 20 or more units: | 1,735 | 12.2% | 9.9% |
| Mobile home: | 522 | 3.7% | 5.8% |
| Boat, RV, van, etc.: | 2 | 0.0% | 0.1% |
Year Structure Built (06340 zip code)
| Year Built | Units | Percent% | US AvgUS |
|---|---|---|---|
| Built 2020 or later: | 19 | 0.1% | 0.6% |
| Built 2010 to 2019: | 516 | 3.6% | 8.2% |
| Built 2000 to 2009: | 1,170 | 8.2% | 13.5% |
| Built 1990 to 1999: | 1,701 | 12.0% | 13.2% |
| Built 1980 to 1989: | 1,997 | 14.1% | 13.2% |
| Built 1970 to 1979: | 3,090 | 21.8% | 14.6% |
| Built 1960 to 1969: | 1,541 | 10.9% | 10.2% |
| Built 1950 to 1959: | 1,821 | 12.8% | 9.9% |
| Built 1940 to 1949: | 582 | 4.1% | 4.6% |
| Built 1939 or earlier: | 1,756 | 12.4% | 12.0% |
Bedrooms (06340 zip code)
| Number of Bedrooms | Units | Percent% | US AvgUS |
|---|---|---|---|
| No bedroom (studio): | 196 | 1.4% | 2.4% |
| 1 bedroom: | 2,635 | 18.6% | 3.0% |
| 2 bedrooms: | 5,431 | 38.3% | 9.1% |
| 3 bedrooms: | 3,693 | 26.0% | 15.9% |
| 4 bedrooms: | 1,707 | 12.0% | 18.8% |
| 5 or more bedrooms: | 531 | 3.7% | 17.6% |
Heating Fuel (06340 zip code)
| Fuel Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| Utility gas: | 1,364 | 10.7% | 47.1% |
| Bottled, tank, or LP gas: | 667 | 5.2% | 4.9% |
| Electricity: | 4,970 | 38.9% | 40.2% |
| Fuel oil, kerosene, etc.: | 5,477 | 42.9% | 4.2% |
| Coal or coke: | 16 | 0.1% | 0.1% |
| Wood: | 37 | 0.3% | 1.5% |
| Solar energy: | 36 | 0.3% | 0.1% |
| Other fuel: | 38 | 0.3% | 0.5% |
| No fuel used: | 175 | 1.4% | 0.2% |
Vehicles Available (06340 zip code)
| Vehicles | Households | Percent% | US AvgUS |
|---|---|---|---|
| No vehicle available: | 1,070 | 8.4% | 8.3% |
| 1 vehicle available: | 5,658 | 44.3% | 32.6% |
| 2 vehicles available: | 4,486 | 35.1% | 37.0% |
| 3 or more vehicles available: | 1,566 | 12.3% | 22.1% |
Home Value Distribution (06340 zip code)
| Value Range | Owner Units | Percent% | US AvgUS |
|---|---|---|---|
| Less than $50,000: | 484 | 8.5% | 5.7% |
| $50,000 to $99,999: | 181 | 3.2% | 7.8% |
| $100,000 to $149,999: | 424 | 7.4% | 9.2% |
| $150,000 to $199,999: | 985 | 17.3% | 10.8% |
| $200,000 to $299,999: | 1,705 | 29.9% | 19.9% |
| $300,000 to $499,999: | 1,010 | 17.7% | 24.1% |
| $500,000 to $999,999: | 740 | 13.0% | 17.0% |
| $1,000,000 or more: | 176 | 3.1% | 5.6% |
Housing Costs (06340 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median owner costs (with mortgage): | $1,824 / mo. | $1,828 / mo. |
| Median owner costs (no mortgage): | $831 / mo. | $584 / mo. |
| Median gross rent: | $1,423 / mo. | $1,268 / mo. |
| Average household size (owner-occupied): | 2.21 | 2.53 |
| Average household size (renter-occupied): | 2.17 | 2.38 |
Households (06340 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total households: | 12,780 | -- | -- |
| Married-couple households: | 4,759 | 37.2% | 47.5% |
| Cohabiting couple households: | 1,877 | 14.7% | 7.0% |
| Male householder, no spouse: | 3,593 | 28.1% | 5.4% |
| Female householder, no spouse: | 3,548 | 27.8% | 12.7% |
| Householder living alone: | 3,454 | 27.0% | 28.6% |
| 65 years and over living alone: | 3,323 | 26.0% | 11.8% |
| Average household size: | 2.19 | -- | 2.53 |
| Average family size: | 2.84 | -- | -- |
Marital Status (06340 zip code)
| Population 15 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 13,334 | -- | -- |
| Never married: | 6,199 | 46.5% | 37.0% |
| Now married: | 5,421 | 40.7% | 49.5% |
| Separated: | 429 | 3.2% | 1.5% |
| Widowed: | 1,207 | 9.1% | 2.6% |
| Divorced: | 3,631 | 27.2% | 9.3% |
School Enrollment (06340 zip code)
| Population 3 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Enrolled in school: | 6,005 | -- | -- |
| Nursery school, preschool: | 565 | 9.4% | 5.8% |
| Kindergarten: | 202 | 3.4% | 5.0% |
| Elementary school (grades 1-8): | 2,414 | 40.2% | 40.5% |
| High school (grades 9-12): | 1,300 | 21.6% | 21.4% |
| College or graduate school: | 1,524 | 25.4% | 27.3% |
Veterans & Disability (06340 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Civilian population 18 years and over: | 21,399 | -- | -- |
| Veterans: | 2,319 | 10.8% | 6.3% |
| Civilian noninstitutionalized population: | 26,676 | -- | -- |
| With a disability: | 3,483 | 13.1% | 13.4% |
| Under 18 with disability: | 188 | 5.4% | 5.8% |
| 18 to 64 with disability: | 1,654 | 47.5% | 10.4% |
| 65 and over with disability: | 1,641 | 47.1% | 33.4% |
Mobility (Residence 1 Year Ago) (06340 zip code)
| Population 1 year and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Same house: | 22,534 | 75.9% | 86.9% |
| Different house: | 6,572 | 22.1% | 13.1% |
| Same county: | 2,749 | 41.8% | 7.0% |
| Different county: | 3,659 | 55.7% | 3.2% |
| Different state: | 3,081 | 46.9% | 2.5% |
| Abroad: | 164 | 2.5% | 0.4% |
Place of Birth (06340 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Native born: | 26,882 | 90.6% | 86.2% |
| Foreign born: | 361 | 1.2% | 13.9% |
| Naturalized citizen: | 2,790 | 772.9% | 52.7% |
| Not a citizen: | 2,790 | 772.9% | 47.3% |
| Foreign-born by region: | -- | -- | -- |
| Europe: | 2,790 | 772.9% | 10.5% |
| Asia: | 389 | 107.8% | 31.3% |
| Africa: | 30 | 8.3% | 5.5% |
| Oceania: | 1 | 0.3% | 0.5% |
| Latin America: | 749 | 207.5% | 50.0% |
| Northern America: | 46 | 12.7% | 2.2% |
Language Spoken at Home (06340 zip code)
| Population 5 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 27,739 | -- | -- |
| English only: | 24,015 | 86.6% | 78.3% |
| Language other than English: | 3,724 | 13.4% | 21.5% |
| By language: | -- | -- | -- |
| Spanish: | 1,499 | 5.4% | 13.3% |
| Other Indo-European languages: | 831 | 3.0% | 3.5% |
| Asian/Pacific Island languages: | 1,366 | 4.9% | 3.5% |
| Other languages: | 28 | 0.1% | 1.0% |
Computers & Internet (06340 zip code)
| Households | Percent% | US AvgUS | |
|---|---|---|---|
| Households with a computer: | 12,780 | 100.0% | 93.1% |
| Households with broadband internet: | 11,874 | 92.9% | 89.4% |
Groton, CT06340