CT area data
Old lyme, CT
Old lyme, CT.
Population: 9,828 (Census ACS)
Home values & appreciation
- Median home value
- $705,483
- 1-year appreciation
- +10.5%
- 3-year appreciation
- +19.8%
- 5-year appreciation
- +46.0%
- 10-year appreciation
- +96.8%
- All-time peak (2026-07)
- $705,483
- House Price Index
- 307.7 (+3.7% YoY)
Market activity
- Median sale price
- $685,000
- Median list price
- $399,900
- Median days on market
- 182 days
- Sale-to-list ratio
- 100.0%
- Active listings
- 2
- 1-year forecast
- +4.1%
- Days to pending
- 28 days
- New listings (monthly)
- 19
Rents
- 2-bedroom fair-market rent (HUD reference)
- $2,430/mo
- 3BR fair-market rent
- $2,910/mo
Affordability
- Cost of living index (Above Average)
- 107.0 (100 = US avg)
- Electricity rate (state-level)
- 29.4¢/kWh
- Natural gas rate (state-level)
- $16.80/MCF
- 30-year mortgage rate (national)
- 6.66%
- 15-year mortgage rate (national)
- 6.00%
Schools
- Total schools
- 5
- Elementary schools
- 2
- Middle schools
- 1
- High schools
- 1
Natural hazards & flood risk
- FEMA flood zone
- A08
- Flood risk level
- High
Climate (30-year normals)
- Average annual temperature
- 54.0°F
- Average high
- 60.0°F
- Average low
- 47.0°F
- Annual precipitation
- 56.2 in
- Annual snowfall
- 10.7 in
Air quality
- Air quality rating
- Good
- Median AQI (annual)
- 41
- Days with Good air quality
- 258
- Days with Unhealthy air quality
- 3
Walkability & transit
- Walkability index
- 8.3 / 20
- Transit service frequency
- -99,999
Amenities
- National parks within ~60 mi
- 5
- Nearest national park
- Touro Synagogue National Historic Site (53 mi)
- Nearest airport
- Mile Creek Airport (4 mi)
- Nearest major airport
- Groton New London Airport (GON) (15 mi)
- Hospitals nearby (~15 mi)
- 2
- Avg hospital rating
- 3.5 / 5
- EV charging stations (within 10 mi)
- 63
- Solar radiation rating
- Fair (4.0 kWh/m²/day)
Housing stock
- Median year housing built
- 1,966
- Median annual property tax
- $6,438
- Mean commute to work
- 21 min
- Households with broadband internet
- 89.6%
Area data compiled from public government, academic, and industry research feeds. Data sources →
Data last updated
Most recent source refresh: Aug 2026. See all data sources →