Southeastern Connecticut County GIS Maps
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Southeastern Connecticut County, Connecticut, has 279,025 residents across 109,991 parcels and covers 598.1 square miles. The FIPS code for Southeastern Connecticut County is 09180. Norwich is the county's largest population center. Southeastern Connecticut County also includes 33 zip codes, 14 public school districts and 20 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Southeastern Connecticut County Trends
- Population
- 279,025—
- Median Home Value
- $293,900▴
- K-12 Enrollment
- 28,786▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Southeastern Connecticut County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Southeastern Connecticut County Parcels
Southeastern Connecticut County has 109,991 mapped parcels. The median assessed value is $180,460. The median lot size is 0.57 acres. 5,693 parcels are 10 acres or larger. Single family homes account for 12.9% of parcels. Residential dwellings follow at 9.0% and residential at 8.4%. Of the parcels with a recorded build year, half were built in 1965 or earlier. The records carry 90,936 distinct owner names. About 6% of parcels list an owner mailing address outside Connecticut. Owner names reach 96.6%. Mailing addresses reach 96.5%. Browse the interactive Southeastern Connecticut County Parcel viewer here.
Southeastern Connecticut County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 109,996 | 100% |
| Owner name | 106,290 | 96.6% |
| Owner mailing address | 106,159 | 96.5% |
| Site address | 85,444 | 77.7% |
| Land use code | 106,356 | 96.7% |
| Land use description | 104,992 | 95.5% |
| Assessed value | 106,356 | 96.7% |
| Land value | 106,356 | 96.7% |
| Improvement value | 106,356 | 96.7% |
| Acreage | 97,864 | 89.0% |
| Parcel boundary | 109,991 | 99.9% |
| Download all Southeastern Connecticut County parcels. | ||
Field coverage measured across all Southeastern Connecticut County parcel records.
Southeastern Connecticut County Population
Southeastern Connecticut County had 279,025 residents in 2020. Recent census data shows how the county has changed over time. Long-term census counts show how the county has changed across recent decades. Norwich is the largest city in the county, with about 40,125 residents. Some of the county's most populated postal areas include Norwich, Groton and New London.
Population Trend in Southeastern Connecticut County CT
Southeastern Connecticut County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Southeastern Connecticut County Zip Codes
Southeastern Connecticut County has 33 zip codes. Some of the county's most populated zip codes include Norwich (06360), Groton (06340) and New London (06320). The largest zip areas account for a meaningful share of the county population. Together, the three largest zips account for about 0% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Southeastern Connecticut County CT
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 06360 | Norwich | 37,104 | ▾ -1.2% |
| 06340 | Groton | 29,788 | ▾ -4.7% |
| 06320 | New London | 27,398 | ▾ -0.8% |
| 06226 | Willimantic | 19,233 | ▾ -4.4% |
| 06415 | Colchester | 16,300 | ▾ -3.3% |
| Download all zip code data | |||
Southeastern Connecticut County Zip Code populations and trends per most recent census data.
Southeastern Connecticut County Demographics
Southeastern Connecticut County has a median age of 41, which is close to the Connecticut average. About 19.6% of residents are under 18, while 19% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 30.5% of the population, which points to a solid working-age base. About 34.6% of adults have a bachelor's degree or higher, above the statewide figure of 41.9%. The county is majority White by population, with Hispanic, Asian, Black and multiracial residents making up a meaningful share of the local mix.
Key Demographics for Southeastern Connecticut County CT
Median Age
41
Under 18
19.6%
Age 65+
19%
Bachelor's+
34.6%
Southeastern Connecticut County School Districts
Southeastern Connecticut County is served by 14 public school districts with 28,786 students enrolled in 2024. The largest districts on the county map are Groton, Norwich and New London. Those three districts account for about 35% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Southeastern Connecticut County CT
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Groton School District | 3,953 | 13.7% | ▾ -2.4% |
| Norwich School District | 3,160 | 11% | ▾ -0.8% |
| New London School District | 2,820 | 9.8% | ▾ -0.5% |
| Windham School District | 2,818 | 9.8% | ▾ -2.7% |
| East Lyme School District | 2,411 | 8.4% | ▾ -0.6% |
| Download all school district data | |||
Southeastern Connecticut County school district enrollment and trends per most recent NCES reporting data.
Southeastern Connecticut County Housing & Real Estate
Southeastern Connecticut County has a median home value of $293,900 and a median gross rent of $1,316. About 65% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Connecticut median, while rents come in below the state average. In March 2026, the median listing price was $432,075 and homes spent about 44 days on the market.
Southeastern Connecticut County Housing Mix
Southeastern Connecticut County housing mix: owner, renter and vacant units.
Southeastern Connecticut County Housing Trends
Southeastern Connecticut County median home value and rent trend (last 5 years).
Businesses in Southeastern Connecticut County, CT
Southeastern Connecticut County has 12,294 business listings across 899 categories. The largest categories in Southeastern Connecticut County business listings are Churches & Religious Organizations (219, 1.8%), Real Estate Agents (193, 1.6%), and Gas Stations (187, 1.5%). The full Southeastern Connecticut County business listings dataset includes names, categories, addresses and contact details where available. Southeastern Connecticut County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Southeastern Connecticut County, CT
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 219 | 1.8% |
| Real Estate Agents | 193 | 1.6% |
| Gas Stations | 187 | 1.5% |
| Parks & Recreation | 185 | 1.5% |
| Landmark And Historical Building | 181 | 1.5% |
| Contractors | 171 | 1.4% |
| Community & Nonprofits | 158 | 1.3% |
| Pizza Restaurants | 149 | 1.2% |
| Beauty Salons | 137 | 1.1% |
| Farm | 127 | 1.0% |
Southeastern Connecticut County Business Listings
| Business | Category | City |
|---|---|---|
| Prokop Signs | 3D Printing Service | Taftville |
| Harbor Village Rehabilitation & Nursing Center | Abuse And Addiction Treatment | New London |
| UConn Bookstore | Academic Bookstore | Groton |
| Gull Harbor Apartments | Accommodation | New London |
| Hoyt, Filippetti and Malaghan | Accountant | Groton |
| Pitching Easy | Active Life | Groton |
| Stonington Natural Health Center | Acupuncture | Stonington |
| Murphy Center | Addiction Rehabilitation Center | Willimantic |
| Mynx Cabaret Groton | Adult Entertainment | Groton |
| Uptime Web Solution | Advertising Agency | Waterford |
| Download Southeastern Connecticut County business listings | ||
Southeastern Connecticut County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Southeastern Connecticut County Basemaps
Southeastern Connecticut County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Southeastern Connecticut County Data Package
This page shows a preview of what's included in the Southeastern Connecticut County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Southeastern Connecticut County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.