ZIP Code 06378
standardSource:
Stonington · New London County · Connecticut
- Population
- 5,399
- Median income
- $135,714
- Median home value
- $593,400
- Bachelor's or higher
- 61.2%
- Land area
- 55.0 sq mi
98/sq mi
▲ 78% vs US
higher than 94% of US ZIPs
▲ 113% vs US
higher than 91% of US ZIPs
Median age 58.7
New York
ZIP code 06378 in Stonington, Connecticut has a population of 5,399. The median household income is $135,714, which is 78% above the national average. Median home value is $593,400, 113% above the US average. 61.2% of residents hold a bachelor's degree or higher.
ZIP code 06378 is classified by USPS as a standard delivery area and covers roughly 55.0 square miles in Stonington, New London County, Connecticut. The area is home to 5,399 residents, producing a population density of 98 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 06378 against Connecticut and the nation.
On the economic side, the median household income for ZIP 06378 sits at $135,714 (20% above the Connecticut average), while per-capita income is $96,042. The poverty rate stands at 2.9% and the unemployment rate at 4.4%. On housing, the median home value is $593,400 (37% above the state average) with median rent at $1,750 per month, and 77.8% of occupied units are owner-occupied, a direct signal of whether 06378 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 61.2% of adults hold a bachelor's degree or higher, the median age is 58.7, and the average commute is 27 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing New London County, so you can benchmark 06378 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 06378
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 06378.
- Retail trade
Retail trade
19 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
18 establishments
- Other services (except public administration)
Other services (except public administration)
18 establishments
- Construction
Construction
17 establishments
- Accommodation and food services
Accommodation and food services
16 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 06378, Stonington, CT · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
5,399
Population
55.0
Area (sq mi)
98
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 06378?
58.7
Median Age
51.1%
Male
48.9%
Female
4.0%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$135,714
Median Household Income
+20% vs state
$96,042
Per Capita Income
2.9%
Poverty Rate
4.4%
Unemployment Rate
26.7 min
Mean Commute Time
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
3,297
Total Housing Units
2,708
Occupied Units
589
Vacant Units
2.05
Avg Household Size
Occupancy Type
$593,400
Median Home Value
+37% vs state
$1,750
Median Rent
1969
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+0.5%
YoY Change (2024)
259
HPI Index (2000 = 100)
+159%
Total Change Since 2000
Home values in ZIP 06378 have increased 0.5% over the past year (2024). Since 2000, this ZIP has seen +159% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | -0.4% | 162 |
| 2021 | +18.0% | 192 |
| 2022 | +17.5% | 225 |
| 2023 | +14.7% | 258 |
| 2024 | +0.5% | 259 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 162 business establishments in ZIP 06378, employing approximately 1,228 people with a combined annual payroll of $77,152,000.
162
Businesses
1,228
Employees
$77.2M
Annual Payroll
14
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Retail trade | 19 | 11.7% |
| Professional, scientific, and technical services | 18 | 11.1% |
| Other services (except public administration) | 18 | 11.1% |
| Construction | 17 | 10.5% |
| Accommodation and food services | 16 | 9.9% |
| Manufacturing | 12 | 7.4% |
| Arts, entertainment, and recreation | 12 | 7.4% |
| Administrative and support and waste management and remediation services | 11 | 6.8% |
| Health care and social assistance | 8 | 4.9% |
| Information | 7 | 4.3% |
| Real estate and rental and leasing | 7 | 4.3% |
| Wholesale trade | 6 | 3.7% |
| Finance and insurance | 4 | 2.5% |
| Educational services | 3 | 1.9% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 06378 vs 06379 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 06379 | Pawcatuck, CT | 9,038 | 3.1 mi |
| 06355 | Mystic, CT | 12,985 | 3.2 mi |
| 06359 | North Stonington, CT | 5,313 | 6.5 mi |
| 02891 | Westerly, RI | 21,198 | 6.4 mi |
| 06339 | Ledyard, CT | 8,302 | 6.1 mi |
| 06340 | Groton, CT | 31,242 | 7.0 mi |
| 06390 | Fishers Island, NY | 236 | 8.5 mi |
| 02804 | Ashaway, RI | 2,607 | 8.2 mi |
| 06335 | Gales Ferry, CT | 6,729 | 8.4 mi |
| 06365 | Preston, CT | 4,720 | 10.8 mi |
More ZIP Codes in New London County
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Frequently Asked Questions
What county is ZIP code 06378 in? ▼
What is the population of ZIP code 06378? ▼
What is the median household income in ZIP 06378? ▼
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How many businesses are in ZIP code 06378? ▼
What are the main industries in ZIP code 06378? ▼
How have home values changed in ZIP code 06378? ▼
What is the education level in ZIP code 06378? ▼
What is the average commute time in ZIP 06378? ▼
What percentage of residents own vs. rent in ZIP 06378? ▼
What is the poverty rate in ZIP code 06378? ▼
ZIP Code Research Guides
Official Data Resources for Stonington, CT
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.