State mortality · CDC NCHS 2017
Connecticut - Mortality Statistics
22,103 deaths in 2017 across 10 tracked causes, at a state average age-adjusted rate of 46.2 per 100,000.
Data updated 2026-05-19
- 22,103
- Deaths, 2017
- Heart disease
- Leading cause
- −17%
- vs national avg
- 46.2
- Avg age-adj /100K
The verdict
Connecticut's leading killer is heart disease at 141.6 per 100K (age-adjusted); the state's average age-adjusted rate across tracked causes runs 17% below the national figure.
- 141.6
- Heart disease /100K, leading
- −17%
- vs national avg rate
- -25.5%
- rate, 1999–2017
- 22,103
- total deaths, 2017
Source: CDC WONDER, Underlying Cause of Death (CDC NCHS / NVSS), 2017. Age-adjusted rates allow fair comparison across states.
Where Connecticut sits among all 51 states
Average age-adjusted death rate across the leading causes, 2017
46.2 Lower than 96% lower than 96% of 51 states
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CDC WONDER, Underlying Cause of Death (CDC NCHS / NVSS) · 2017
Connecticut recorded 22,103 deaths in 2017 across 10 tracked causes (CDC WONDER · methodology). Total annual deaths fell from 23,339 in 1999 to 22,103 in 2017 (-5.3%) - a modest trend over 18 years.
Key Statistics
Top 5 Causes of Death
The five leading causes account for 18,698 deaths (84.6% of all deaths) in Connecticut.
All Causes of Death in Connecticut (2017)
| # | Cause of death | Deaths | % of total | Age-adj /100K |
|---|---|---|---|---|
| 1 | Heart disease | 7,138 | 32.3% | 141.6 |
| 2 | Cancer | 6,608 | 29.9% | 139.6 |
| 3 | Unintentional injuries | 2,078 | 9.4% | 53.2 |
| 4 | CLRD | 1,471 | 6.7% | 30.4 |
| 5 | Stroke | 1,403 | 6.3% | 27.8 |
| 6 | Alzheimer's disease | 1,077 | 4.9% | 20.4 |
| 7 | Diabetes | 694 | 3.1% | 14.5 |
| 8 | Influenza and pneumonia | 675 | 3.1% | 13.1 |
| 9 | Kidney disease | 554 | 2.5% | 11.2 |
| 10 | Suicide | 405 | 1.8% | 10.5 |
Mortality Trends Over Time
Show the full 19-year data table (deaths, rate, year-over-year change)
| Year | Total Deaths | Avg Age-Adj Rate | Deaths YoY |
|---|---|---|---|
| 1999 | 23,339 | 62.0 | - |
| 2000 | 23,704 | 62.3 | +1.6% |
| 2001 | 23,274 | 60.1 | -1.8% |
| 2002 | 23,421 | 59.5 | +0.6% |
| 2003 | 22,881 | 57.0 | -2.3% |
| 2004 | 22,588 | 55.9 | -1.3% |
| 2005 | 22,254 | 54.1 | -1.5% |
| 2006 | 22,010 | 53.0 | -1.1% |
| 2007 | 21,298 | 50.5 | -3.2% |
| 2008 | 21,570 | 50.3 | +1.3% |
| 2009 | 21,124 | 48.7 | -2.1% |
| 2010 | 21,058 | 47.9 | -0.3% |
| 2011 | 21,285 | 47.7 | +1.1% |
| 2012 | 20,983 | 46.5 | -1.4% |
| 2013 | 20,974 | 45.8 | -0.0% |
| 2014 | 21,150 | 45.9 | +0.8% |
| 2015 | 21,681 | 46.5 | +2.5% |
| 2016 | 21,692 | 46.5 | +0.1% |
| 2017 | 22,103 | 46.2 | +1.9% |
National Comparison
How Connecticut compares to the national average in 2017.
For Heart disease, Connecticut ranks #43 out of 51 states (age-adjusted rate: 141.6 per 100,000). A higher rank indicates a higher mortality rate.
Nearby States & Comparisons
Compare mortality data with states bordering Connecticut (2017).
| State | Deaths (Top Cause) | Leading Cause | Age-Adj Rate |
|---|---|---|---|
| Connecticut (this state) | 7,138 | Heart disease | 141.6 |
| Massachusetts | 12,934 | Cancer | 149.3 |
| New York | 44,092 | Heart disease | 171.2 |
| Rhode Island | 2,339 | Heart disease | 155.7 |
Dig deeper into Connecticut's mortality data
What the 2017 Connecticut Mortality Record Shows
22,103 deaths were recorded in Connecticut for 2017 across 10 CDC WONDER categories. Leading the record is Heart disease, with 7,138 deaths at 141.6 per 100,000 (age-adjusted) -- nationally Connecticut sits at #43 of 51 states for this cause, where a higher rank corresponds to a higher rate. The top five causes together represent 84.6% of the state's total (18,698 deaths).
Connecticut's average age-adjusted rate across all tracked causes was 46.2 per 100,000 - 17% below the national average of 55.5. Landing below the national figure puts the state in reasonably good aggregate standing, though it's still worth checking the trend below to confirm the gap is holding rather than narrowing. Over the 1999–2017 window, total deaths decreased by 5.3%, and the state-wide average age-adjusted rate declined by 25.5%.
How to read this record & data notes
For planners, clinicians, and individual readers, the practical read of the 2017 Connecticut record is layered: the state-wide average frames overall burden, the top-causes ranking identifies where the mortality load concentrates, and the multi-year trend indicates whether conditions are improving or worsening. Because age-adjusted rates use the year 2000 US standard population, differences between states and across years are not driven by demographic aging alone, they reflect real variation in exposure, prevention, and care delivery. These figures describe population-level mortality statistics and are not a substitute for medical advice; individual risk depends on personal health history, behaviors, and access to care. Consult a qualified healthcare professional about diagnosis, treatment, or prevention decisions. Data source: CDC National Center for Health Statistics, CDC WONDER Underlying Cause of Death, covering 1999–2017.
Frequently Asked Questions
What is the leading cause of death in Connecticut? ▼
How many people died in Connecticut in 2017? ▼
What are the top 3 causes of death in Connecticut? ▼
How does Connecticut's mortality rate compare to the national average? ▼
Has the death rate in Connecticut increased or decreased over time? ▼
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Where does Connecticut rank nationally for Heart disease? ▼
What the Connecticut record means
Connecticut's average age-adjusted rate runs 17% below the national figure, read the leading cause, the spread, and the trend together, not any single number.
- Heart disease is the leading cause at 141.6/100K, see how every state compares. Heart disease by state
- Put Connecticut side by side with another state before drawing conclusions. Compare states
- The state-wide rate fell 25.5% from 1999 to 2017 - trends matter more than a single year. Mortality trends
Rates are age-adjusted to the 2000 U.S. standard population; the state average summarizes the leading causes, not all-cause mortality. Population statistics, not personal risk.
Data source & methodology
Rates are per 100,000 population. Age-adjusted rates use the year 2000 US standard population. Data covers 1999–2017. Source: CDC WONDER, Underlying Cause of Death (CDC NCHS / NVSS).
Read our methodology - how this data is sourced, computed, and verified.
According to the CDC National Center for Health Statistics, PlainHealthData's mortality figures are rendered directly from 9,690 official state-year-cause records (NCHS Leading Causes of Death, 1999-2017, finalized data verified June 2026) -- no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-19.