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New London, CT Demographics

New London, CT is the 7th most populous of 9 counties in Connecticut, with 268,539 residents across 665 square miles. That is about 404 people per square mile.

At the 2020 census

Population 268,539
Land area 665 sq mi
Density 404 / sq mi

Data: 2020 Census · American Community Survey 2024

How New London compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: New London, CT

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around New London, CT — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

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About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

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