8th most populous of 9
With 114,101 residents in 2024, Northwest Hills Planning Region ranks 8th by population among Connecticut's 9 planning regions and is home to 3.1% of the state's residents.

Northwest Hills Planning Region has the oldest population in Connecticut (median age 47.1) and the 2nd highest homeownership rate (76.3%).
Northwest Hills Planning Region is home to 114,101 people (2024 estimate) on 787 square miles of land. This page brings together official U.S. Census Bureau population estimates since 2020, the components of change—births, deaths and migration—American Community Survey indicators on income, housing, poverty and education, BEA economic accounts and BLS unemployment.
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U.S. Census Bureau: intercensal estimates 2000–2009, Vintage 2020 (2010–2019) and Vintage 2024 (2020–2024), July 1.
| Indicator | Value | Year and source |
|---|---|---|
| Population estimate | 114,101 | 2024 · U.S. Census Bureau |
| International migration | +329 | 2024 · Census Vintage 2024 |
| Domestic migration | +472 | 2024 · Census Vintage 2024 |
| Birth rate | 7.9 per 1,000 | 2024 · calculated |
| Death rate | 9.9 per 1,000 | 2024 · calculated |
| Population rank in Connecticut | 8th of 9 | 2024 · calculated |
| Per capita personal income | $83,433 | BEA, 2024 · official |
| Gross domestic product | $6.5 billion | BEA, current dollars, 2024 · official |
| Median household income | $93,551 | ACS 2020–2024 5-year · official |
| Poverty rate | 8.8% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 39.4% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 9.5% | ACS 2020–2024 5-year · official |
| Median home value | $335,600 | ACS 2020–2024 5-year · official |
| Median gross rent | $1,193/month | ACS 2020–2024 5-year · official |
| Median age | 47.1 years | ACS 2020–2024 5-year · official |
| Households | 47,845 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 76.3% | ACS 2020–2024 5-year · official |
Comparable indicators for Northwest Hills Planning Region, Connecticut and the United States.
| Indicator | County | Connecticut | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | +1.5% | +1.9% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 7.9 | 9.4 | 10.6 | 2024 |
| Death rate (per 1,000) | 9.9 | 8.9 | 9.1 | 2024 |
| Net migration rate (per 1,000) | 7.0 | 8.2 | 8.2 | 2024 |
| Population density (/mi²) | 145.0 | 758.9 | 96.3 | 2024 |
| Per capita personal income | $83,433 | $95,067 | $73,204 | BEA, 2024 |
| Median household income | $93,551 | $95,781 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 8.8% | 10.0% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 39.4% | 42.5% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 9.5% | 15.7% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $335,600 | $366,900 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $1,193/month | $1,488/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 47.1 years | 41.1 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 76.3% | 66.5% | 65.2% | ACS 2020–2024 5-year |
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With 114,101 residents in 2024, Northwest Hills Planning Region ranks 8th by population among Connecticut's 9 planning regions and is home to 3.1% of the state's residents.
Its population went from 112,456 at the April 2020 Census base to 114,101 in 2024, a change of +1.5%, compared with +1.9% for Connecticut as a whole.
In the year to July 2024 the region recorded 901 births and 1,125 deaths, so deaths outnumbered births by 224.
Annual Census estimates since 2020 put the region's highest population in 2024, at 114,101.
Northwest Hills Planning Region has about 145.0 residents per square mile of land, ranking 9th of 9 planning regions; Connecticut averages 758.9.
With a median household income of $93,551 (ACS 2020–2024 5-year), the region ranks 3rd of 9 Connecticut planning regions; the state median is $95,781.
Its economy produced $6.5 billion of GDP in 2024 (BEA), 8th largest among 9 Connecticut planning regions.