Old Lyme town, Connecticut
Old Lyme town profile, demographic data, and geographic information.
Old Lyme town is a geographic entity located in Lower Connecticut River Valley Planning Region, Connecticut. As of official census estimates, it has a reported population of 7,702. The land area covers 23.01 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population (2025 PEP Estimate) | 7,702 | — | 2025 / Census |
| Median Age | 50.6 yrs | ±3.3 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 3,185 | ±201 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 4,598 | ±269 |
| Occupied Housing Units | 3,185 | ±201 |
| Vacant Housing Units | 1,413 | ±214 |
| Median Home Value | $484,200 | ±$21,146 |
| Median Gross Rent | $2,238 | ±$295 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $131,899 | ±$11,250 |
| Per Capita Income | $83,426 | ±$13,345 |
| Poverty Rate | 2.9% | ±1.2% |
| Population Below Poverty Level | 221 | ±88 |
| Unemployment Rate | 2.7% | ±1.9% |
| Civilian Labor Force, Employed | 3,746 | ±257 |
| Broadband Internet Rate | 98.8% | ±0.8% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 7,721 (2024)
ID: 161505
|
Township | Official Local Government |
Contact: EXECUTIVE ASSISTANT
52 LYME ST, OLD LYME CT 06371-2331
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Special Education School Old Lyme | PK | Old Lyme, CT | |
| Regular School Old Lyme | 09-12 | Old Lyme, CT | |
| Regular School Old Lyme | 06-08 | Old Lyme, CT | |
| Regular School Old Lyme | KG-05 | Old Lyme, CT | |
| Regular School Nearby | 05-08 | New London, CT | |
| Regular School Nearby | KG-03 | Higganum, CT | |
| Regular School Nearby | PK-05 | New London, CT | |
| Regular School Nearby | PK-05 | Groton, CT | |
| Regular School Nearby | PK-05 | Groton, CT | |
| 4 Nearby | 3-17 | WATERFORD, CT |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Mitchell College
|
College | 11.0 mi away | 437 Pequot Avenue, New London, CT, 06320 |
8607015000
|
|
PHOEBE GRIFFIN NOYES LIBRARY
|
Library | 1.3 mi away | 2 LIBRARY LANE, OLD LYME, CT, 06371 |
(860) 434-1684
|
|
Connecticut College
|
College | 11.3 mi away | 270 Mohegan Avenue, New London, CT, 06320-4196 |
8604471911
|
|
ACTON PUBLIC LIBRARY
|
Library | 4.2 mi away | 60 OLD BOSTON POST RD., OLD SAYBROOK, CT, 06475 |
(860) 395-3185
|
|
United States Coast Guard Academy
|
College | 11.5 mi away | 15 Mohegan Avenue, New London, CT, 06320 |
8604448444
|
|
EAST LYME PUBLIC LIBRARY
|
Library | 5.2 mi away | 39 SOCIETY ROAD, EAST LYME, CT, 06357 |
(860) 739-6926
|
|
University of Connecticut-Avery Point
|
College | 12.5 mi away | 1084 Shennecossett Rd, Groton, CT, 06340-6097 |
8604059000
|
|
ESSEX LIBRARY ASSOCIATION
|
Library | 5.5 mi away | 33 WEST AVE., ESSEX, CT, 06426 |
(860) 767-1560
|
|
TIGI Hairdressing Academy Guilford
|
College Vocational | 19.4 mi away | 860 Boston Post Road, Guilford, CT, 06437 |
2034583334
|
|
LYME PUBLIC LIBRARY
|
Library | 7.2 mi away | 482 HAMBURG RD., LYME, CT, 06371 |
(860) 434-2272
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at GROTON NEW LONDON AP, CT US, located 13.3 miles from Old Lyme town. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 38.3° | 23.3° | 30.8° | 2.68" | — |
| February | 40.2° | 24.6° | 32.4° | 2.20" | — |
| March | 46.6° | 30.7° | 38.6° | 3.82" | — |
| April | 56.2° | 39.1° | 47.6° | 3.58" | — |
| May | 64.8° | 48.8° | 56.8° | 3.31" | — |
| June | 73.8° | 58.2° | 66.0° | 3.30" | — |
| July | 79.8° | 64.8° | 72.3° | 3.24" | — |
| August | 79.2° | 63.8° | 71.5° | 3.32" | — |
| September | 73.5° | 56.9° | 65.2° | 3.83" | — |
| October | 63.2° | 45.6° | 54.4° | 3.66" | — |
| November | 53.3° | 36.8° | 45.1° | 3.24" | — |
| December | 43.9° | 29.0° | 36.5° | 3.13" | — |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Old Saybrook Center CDP | CDP | 3.1 mi | — |
| Fenwick borough | Borough | 3.8 mi | — |
| Niantic CDP | CDP | 5.4 mi | — |
| Essex Village CDP | CDP | 5.5 mi | — |
| Saybrook Manor CDP | CDP | 5.6 mi | — |
| Westbrook Center CDP | CDP | 7.4 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 0913057040. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.