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06340
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  2. ZIP Codes
  3. ZIP Code 06340
Connecticut (CT)Southeastern Connecticut Planning RegionNorwich-New London-Willimantic860959

ZIP Code 06340 — Groton, CT

Southeastern Connecticut Planning Region * Norwich-New London-Willimantic metro

Compare

29.9K

Population

$81.8K

Median income

per household

$294.7K

Home value

12.7%

Poverty rate

What stands out

  • Median household income: $81.8K.
  • Median home value: $294.7K.
  • Poverty rate: 12.7%.

Categories vs U.S.

Economy

3 of 5 metrics better than U.S. benchmarks

Rental strain: 47.4% of renter households are rent-burdened (≥30% of income).

Median household income

$81.8K

U.S.

$81K

Per-capita income

$47.2K

U.S.

$45K

Median home value

$294.7K

U.S.

$333K

Housing stress

Rent-burdened renters (≥30%)

47.4%

U.S.

51.1%

Severely rent-burdened (≥50%)

24.5%

U.S.

25.9%

Affordability Ratios

Rent-to-Income

23.5%

Below 30% threshold

Home-Value-to-Income

3.6×

Within typical 3-5x range

Income distribution

Share of households by income bracket (ACS).

< $50k
30.5%
$50–100k
33.6%
$100–200k
24.4%
$200k+
11.6%

Health

4 of 6 available metrics better than U.S.

CDC PLACES modeled ZCTA-level estimates (adult prevalence).

Obesity

31.6%

U.S.

33.3%

Diabetes

8.6%

U.S.

12.0%

Current smoking

10.4%

U.S.

13.1%

Connectivity

1 of 1 metrics better than U.S.

5G available

91.1%

U.S.

77.4%

Learning

Education metrics come from ACS 5-year estimates for ZIP Code Tabulation Areas (ZCTAs).

Bachelor's degree+ (age 25+)

39.2%

U.S.

35.7%

ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as noise.

School districts

Groton School District

Map

ZIP 06340

Groton, CT

Population

29.9K

Area

22.5 sq mi

Density

1.3K/sq mi

Neighbors

0632006335063390635506375
More Details

Census Tracts

10 tracts overlap this ZIP. Hover over segments to explore.

21%
17%
14%
14%
13%
+5

Tract 8702

20.8%

Tract 7021

17.2%

Tract 7027

14.3%

Tract 7028

14%

Tract 7029

13.1%

Others (5)

20.6%

Total tracts: 10Coverage: 100.0%

Representation

U.S. House

ZIP codes can span multiple congressional districts. Overlap percentages are approximate by land area. Verify by address.

100%

CT-2

100%

Districts: 1Coverage: 100.0%

Data freshness

ACS 5-Year
2020–2024
CDC PLACES
2025
Mobile
2025-11-24
Page Updated
2026-02-23

Release schedule and upstream dates: Sources.

Data sources

US Census Bureau (ACS 5-year)HUD USPS ZIP crosswalkUS Census TIGER/Line (geometry inputs)US Census TIGER/Line (school districts)US Census Bureau (ZCTA-to-tract relationship, 2020)US Census Bureau (2020 ZCTA-to-congressional-district relationship file, CD119)CDC PLACES (ZCTA)FCC (Mobile Broadband Data Collection)

Derived statistics

  • ZIP pages use Census ZIP Code Tabulation Areas (ZCTAs), not USPS delivery routes.
  • Population density is computed as population ÷ land area.
  • Overlap percentages (tracts and districts) are derived from map geometry and are approximate.

Data accuracy & methodology

ZIP pages combine 2020–2024 ACS 5-year ZCTA estimates with other public datasets when available (see Sources). Connectivity metrics use FCC coverage data, not ACS. ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as statistical noise rather than precise changes.