Groton, CT ZIP Codes
One ZIP code serves Groton, Connecticut: 06340. Together they are home to 29,863 residents in 12,879 households. That is more than the 9,490 people counted inside Groton city limits, because these ZIP codes reach past its boundary.
Groton city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 9,490 |
| Households | 4,654 |
| Median household income | $79,577 |
| Median home value | $306,600 |
| Median age | 39 |
| Median rent | $1,250 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 29,863 |
| Households (sum of ZIP codes) | 12,879 |
| Median household income, range across ZIP codes | $81,792 (06340) to $81,792 (06340) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $81,792 |
| Homeowners | 44.5% |
| Households with kids under 18 | 26.5% |
| Moved in the past year | 22.9% |
| Carrier routes in EDDM2GO's route library | 21 routes, 13,177 homes (1 of 1 ZIP codes) |
Every ZIP code in Groton
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 06340 | Groton | 29,863 | 12,879 | $81,792 | $294,700 | 44.5% | 26.5% | 22.9% | 21 | 13,893 | 14% of its land; mailing city |
A ZIP code is listed for Groton when at least 10% of its land lies inside Groton city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Groton. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Groton.
Counties
- New London County — 33 ZIP codes
Nearby cities sharing these ZIP codes
- Conning Towers-Nautilus Park — 1 ZIP code
Price a mailing to Groton ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Groton, CT?
- 06340. A ZIP code is listed for Groton when at least 10% of its land lies inside Groton city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Groton.
- What is the population of Groton, CT?
- The Census Bureau counts 9,490 residents inside Groton city limits (ACS 2020–2024). The 1 ZIP code that serve Groton hold 29,863 residents in all.
- What is the median household income in Groton, CT?
- $79,577 inside Groton city limits, per the Census Bureau. Across its ZIP codes the medians run from $81,792 to $81,792.
- How many carrier routes and mailboxes are in Groton, CT?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 21 carrier routes reaching 13,177 residential and 623 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.