Lower Connecticut River Valley Planning Region, Connecticut
Lower Connecticut River Valley Planning Region, Connecticut, has 177,311 residents (July 2025 estimate). It uses Eastern Time and covers 424 sq mi (1,098 km²) of land. It is a county equivalent (planning region).
- Resident population, July 2025
- 177,311
- Land area
- 424 sq mi (1,098 km²)
- County seat or government
- No separate county-government seat; this is a statistical county equivalent.
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $104,428 ± $2,975
- Median home value
- $379,700 ± $6,838
- Median rent, with utilities
- $1,454 ± $44
- Homes lived in by their owners
- 75.8% ± 1.2 points
- County type
- Planning region
- Metro or micro area
- Hartford-West Hartford-East Hartford, CT metro areaCentral planning region
- Water area
- 93.1 sq mi (241 km²)
- State
- Connecticut
- County code (FIPS)
- 09130
- Coordinates (central point)
- 41.420307, -72.493525
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Lower Connecticut River Valley Planning Region
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Eastern TimeAmerica/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 0645746,720 people
- 0641516,038 people
- 0641614,334 people
- 0641313,377 people
- 0642412,751 people
- 0647510,575 people
- 063719,828 people
- 064809,434 people
- 064227,208 people
- 064986,856 people
- 064196,240 people
- 064415,348 people
All 28
28 ZIP Code areas overlap Lower Connecticut River Valley Planning Region. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Towns in Lower Connecticut River Valley Planning Region, largest first
- Town of Middletown47,958 people
- Town of Cromwell14,334 people
- Town of Clinton13,377 people
- Town of East Hampton12,925 people
- Town of Old Saybrook10,575 people
- Town of Portland9,434 people
- Town of East Haddam8,969 people
- Town of Haddam8,644 people
- Town of Old Lyme7,679 people
- Town of Durham7,208 people
- Town of Westbrook6,856 people
- Town of Essex6,794 people
All 17
- Town of Killingworth6,240 people
- Town of Deep River4,458 people
- Town of Middlefield4,243 people
- Town of Chester3,825 people
- Town of Lyme2,303 people
People counts are American Community Survey 2020–2024 5-year estimates. All towns in Connecticut, by county
School districts in Lower Connecticut River Valley Planning Region, largest first
- Middletown School District47,958 people
- Regional School District 0415,077 people
- Regional School District 1714,884 people
- Cromwell School District14,334 people
- Clinton School District13,377 people
- East Hampton School District12,925 people
- Regional School District 1311,451 people
- Old Saybrook School District10,575 people
- Regional School District 189,982 people
- Portland School District9,434 people
- East Haddam School District8,969 people
- Westbrook School District6,856 people
All 15
- Essex School District6,794 people
- Deep River School District4,458 people
- Chester School District3,825 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Middletown, Connecticut (city)47,958 people
- Portland, Connecticut (CDP)5,944 people
- Lake Pocotopaug, Connecticut (CDP)4,875 people
- Clinton, Connecticut (CDP)3,465 people
- Durham, Connecticut (CDP)3,347 people
- East Hampton, Connecticut (CDP)3,347 people
- Essex Village, Connecticut (CDP)2,705 people
- Westbrook Center, Connecticut (CDP)2,501 people
- Deep River Center, Connecticut (CDP)2,407 people
- Moodus, Connecticut (CDP)2,042 people
- Chester Center, Connecticut (CDP)2,026 people
- Higganum, Connecticut (CDP)1,742 people
All 15
- Old Saybrook Center, Connecticut (CDP)1,659 people
- Saybrook Manor, Connecticut (CDP)1,358 people
- Fenwick, Connecticut (borough)49 people
Bordering areas, nearest first
Distances are straight lines between map points.
- South Central Connecticut Planning Region, Connecticut20 mi southwest
- Southeastern Connecticut Planning Region, Connecticut21 mi east
- Capitol Planning Region, Connecticut28 mi north
- Suffolk County, New York35 mi south
Before using this answer on a form
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