Town · Connecticut
Haddam, Connecticut
Haddam, town, in Lower Connecticut River Valley Planning Region, Connecticut. Haddam had 8,947 residents on July 1, 2025 by the Census Bureau's estimate, up 5.8% since 2020; the 2020 Census counted 8,452 and the ACS 2020-2024 5-year estimates put it at 8,644 (±20). GEOID 0913035230.
Residents, July 2025 estimate
8,947
Census Bureau estimate (no margin published)
2020 Census count: 8,452 · ACS 2020-2024: 8,644 ±20
Median household income
$114,426
±$15,147 (90% margin)
Connecticut: $95,781
Median home value
$379,700
±$25,349 (90% margin)
Connecticut: $366,900
Median gross rent
$1,567
±$258 (90% margin)
Connecticut: $1,488
Where is Haddam and what county is it in?
Haddam is a town in Lower Connecticut River Valley Planning Region, Connecticut. It covers 43.9 square miles of land, 192 residents per square mile in 2020.
One place lies inside Haddam: Higganum (CDP, 2,089 in 2020).
Haddam is in the Hartford-West Hartford-East Hartford, CT metropolitan statistical area, which takes in 2 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Haddam, and is it growing?
The Census Bureau estimates that 8,947 people lived in Haddam on July 1, 2025, up 5.8% since 2020, faster than Connecticut (+2.2%). The 2020 Census counted 8,452 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 8,644 (±20).
| Measure | Haddam | Lower Connecticut River Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Total population | 8,644±20 | 175,822 | – |
| Households | 3,389±207 | 74,068 | – |
| Average household size | 2.52±0.15 | 2.28 | – |
| Housing units | 3,637±234 | 82,963 | – |
Haddam's population since 2000
From 7,157 in 2000 to 8,947 in 2025: up 25.0%. The 2000, 2010 and 2020 figures are census counts, each for Haddam as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Haddam?
The median resident of Haddam is 45.9 years old; 21.3% are under 18 and 21.0% are 65 or older. The largest group is non-Hispanic white residents at 85.1%, then Hispanic or Latino residents (of any race) at 5.5%. 5.5% of residents were born outside the United States.
| Measure | Haddam | Lower Connecticut River Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median age | 45.9±2.6 | 45.9 | – |
| Under 18 years | 21.3%±2.3 pts | 16.7% | – |
| 65 years and over | 21.0%±2.6 pts | 22.2% | – |
| Male | 50.0%±3.2 pts | 49.3% | – |
| Hispanic or Latino (any race) | 5.5%±3.0 pts | 7.8% | – |
| White alone, not Hispanic | 85.1%±4.5 pts | 79.2% | – |
| Black or African American alone, not Hispanic | 0.2%±0.4 pts | 4.4% | – |
| Asian alone, not Hispanic | 5.1%±4.4 pts | 3.4% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.1%±0.2 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.5 pts | 0.2% | – |
| Two or more races, not Hispanic | 3.6%±2.1 pts | 4.6% | – |
| Some other race alone, not Hispanic | 0.4%±0.5 pts | 0.3% | – |
| Born outside the United States | 5.5%±2.9 pts | 8.2% | – |
| Speak a language other than English at home (age 5+) | 7.6%±3.5 pts | 10.7% | – |
| Civilian veterans (age 18+) | 6.9%±1.6 pts | 5.8% | – |
| With a disability | 12.0%±2.5 pts | 11.7% | – |
| No health insurance coverage | 1.6%±1.3 pts | 3.3% | – |
| High school graduate or higher (age 25+) | 96.8%±1.5 pts | 95.5% | – |
| Bachelor's degree or higher (age 25+) | 47.6%±4.5 pts | 46.0% | – |
| Graduate or professional degree (age 25+) | 22.2%±4.2 pts | 20.7% | – |
| Lived in the same house a year earlier | 92.2%±3.2 pts | 90.5% | – |
| Moved from another state in the past year | 2.4%±1.2 pts | 2.4% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Haddam earn?
Half of Haddam's 3,389 households earn less than $114,426 a year (±$15,147), against $104,428 in Lower Connecticut River Valley Planning Region and $95,781 in Connecticut. 4.8% of residents live below the poverty line.
| Measure | Haddam | Lower Connecticut River Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $114,426±$15,147 | $104,428 | – |
| Mean household income | $145,017±$14,881 | $138,522 | – |
| Per capita income | $59,294±$5,660 | $59,075 | – |
| People below the poverty line | 4.8%±2.4 pts | 6.8% | – |
| Children under 18 below the poverty line | 5.8%±4.8 pts | 6.6% | – |
| Households receiving SNAP | 4.7%±2.7 pts | 6.8% | – |
| Households with a computer | 98.4%±1.5 pts | 95.4% | – |
| Households with a broadband subscription | 95.0%±2.7 pts | 92.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Haddam?
Owners occupy 86.7% of Haddam's occupied homes and renters 13.3%. The median owner-occupied home is valued at $379,700 by its owner (±$25,349). The median renter pays $1,567 a month including utilities, and 42.4% of renters pay 35% or more of their income on rent.
| Measure | Haddam | Lower Connecticut River Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $379,700±$25,349 | $379,700 | – |
| Median gross rent | $1,567±$258 | $1,454 | – |
| Renters paying 35% or more of income on rent | 42.4%±17.6 pts | 40.7% | – |
| Median monthly owner costs, with a mortgage | $2,342±$141 | $2,411 | – |
| Owner-occupied homes | 86.7%±4.1 pts | 75.8% | – |
| Renter-occupied homes | 13.3%±4.1 pts | 24.2% | – |
| Housing units | 3,637±234 | 82,963 | – |
| Homeowner vacancy rate | 0.0%±1.4 pts | 0.7% | – |
| Rental vacancy rate | 6.8%±10.3 pts | 3.6% | – |
| Single-family detached homes | 93.0%±2.7 pts | 72.4% | – |
| Mobile homes | 0.2%±0.3 pts | 1.0% | – |
| Built 2020 or later | 0.0%±1.2 pts | 0.4% | – |
| Built 2010 to 2019 | 3.4%±2.0 pts | 4.1% | – |
| Built 1939 or earlier | 15.3%±4.0 pts | 19.2% | – |
| Households with no vehicle | 5.2%±2.4 pts | 5.4% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Haddam building?
Builders took permits for 14 new housing units in Haddam in 2025 (14 in single-family houses), 1.6 per 1,000 residents against 2.0 across Connecticut.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Haddam work and get to work?
83.8% of Haddam's workers drive alone and 11.8% work from home. The average trip to work takes 30.7 minutes. The unemployment rate in 2020-2024 averaged 4.5%.
| Measure | Haddam | Lower Connecticut River Valley Planning Region | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 68.1%±3.0 pts | 65.0% | – |
| Unemployment rate | 4.5%±2.9 pts | 3.8% | – |
| Drove alone to work | 83.8%±3.3 pts | 71.6% | – |
| Carpooled | 3.3%±1.4 pts | 6.5% | – |
| Public transportation | 0.5%±0.5 pts | 1.1% | – |
| Walked | 0.0%±0.9 pts | 2.3% | – |
| Worked from home | 11.8%±3.4 pts | 16.8% | – |
| Mean travel time to work | 30.7 min±2.5 | 26.0 min | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Haddam?
2 census tracts lie mostly in Haddam (2020 census blocks). Their median household incomes run from $109,211 (Tract 5901.02) to $122,219 (Tract 5901.01).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 5901.02Lower Connecticut River Valley Planning Region | 4,673 | $109,211 |
| Tract 5901.01Lower Connecticut River Valley Planning Region | 3,971 | $122,219 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Haddam) · Census block assignment files
How does Haddam compare with other places in Connecticut?
By the Census Bureau's July 2025 estimates, Haddam is the 1,389th-most populous of the 16,079 U.S. towns and townships that have one and the 80th-most populous of 142 in Connecticut.
Haddam ranks 125th of 294 places in Connecticut with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 80th | 142 |
| Growth 2020-2025 (PEP) | 12th | 167 |
| Residents per square mile | 261st | 303 |
| Median household income | 125th | 294 |
| Per capita income | 136th | 303 |
| Median home value | 143rd | 300 |
| Median gross rent | 115th | 266 |
| Poverty rate | 141st | 202 |
| Bachelor's degree or higher | 139th | 297 |
| Median age | 128th | 301 |
| Owner-occupied share | 87th | 300 |
| Work from home | 216th | 279 |
| Travel time to work | 82nd | 302 |
Haddam's figures with every place in Connecticut (CSV)
Every place in Connecticut, sortable · Compare Haddam with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Haddam?
13 of the 57 figures for Haddam on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Haddam are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.