Connecticut

  1. Home
  2. Research & Reports
  3. State of Lung Cancer
  4. State Data
  5. Connecticut

The American Lung Association's "State of Lung Cancer" report explores how lung cancer varies by state. It does this by analyzing key lung cancer indicators including rate of new cases, survival, stage at diagnosis, surgical treatment, lack of treatment and screening rates. Learn how lung cancer is affecting your state.

Rate of New Cases Survival Rate Early Diagnosis Surgical Treatment Lack of Treatment Screening
Rate of New Cases
Survival Rate
Early Diagnosis
Surgical Treatment
Lack of Treatment
Screening

Requires Coverage of Comprehensive Biomarker Testing

Yes

Highlighted Disparity

Black individuals in Connecticut are least likely to receive surgical treatment

Lung Cancer Rates

New Cases

New Cases:

  • The rate of new lung cancer cases in Connecticut is 53.5 and significantly higher than the national rate of 52.1.
  • It ranks 27th among all states, placing it in the average tier.
  • Over the last five years, the rate of new cases in Connecticut improved by 13%.
  • Note: When examining incidence data, it is important to note that the COVID-19 pandemic disrupted access to medical care. This resulted in a drop in cancer diagnoses for the year 2020, particularly for cancers diagnosed before symptoms develop (including lung cancer). This drop reflects changes in medical care for 2020 and should not necessarily be interpreted as a reduction in the underlying cancer burden.
5-Year Survival Rate

Five-Year Survival Rate:

  • The percent of people living five years after being diagnosed with lung cancer (the survival rate) in Connecticut is 38.2%, which is significantly higher than the national rate of 31.0%.
  • It ranks 3rd among the 43 states with survival data, placing it in the top tier.
  • Over the last five years, the survival rate in Connecticut improved by 25%.
Stage at Diagnosis

Most lung cancer cases are diagnosed at later stages when the cancer has spread to other organs, treatment options are less likely to be curative, and survival is lower. The earlier lung cancer is diagnosed, the more likely treatments will be curative and improve chances of survival.

Nationally, 42.6% of cases are not caught until a late stage when the survival rate is only 12%.

Early Diagnosis:

  • In Connecticut, 35.2% of cases are caught at an early stage, which is significantly higher than the national rate of 29.3%.
  • It ranks 4th among the 47 states with data on diagnosis at an early stage, placing it in the top tier.
  • Over the last five years, the early diagnosis rate in Connecticut improved by 9%.

Lung Cancer Treatment

Surgical

While surgery may not be an option for every patient, those who receive it as part of their initial treatment have higher survival rates than those who do not. Surgery to remove lung cancer is not an appropriate treatment option for all patients. Other treatments may be recommended instead of or in addition to surgery, such as chemotherapy, radiation, targeted therapy or immunotherapy.

Surgical Treatment:

  • Connecticut ranked 4th (out of the 40 states with available data) with 25.0% of cases undergoing surgery as part of the first course of treatment.
  • This is significantly higher than the national rate of 21.4% and puts Connecticut in the above average tier.
Biomarker Coverage

Lung tumors may have changes in DNA that can be targeted by treatments, but the tumor has to be tested for these changes. Insurance coverage of such testing is important for removing a cost barrier to lung cancer patients but is only required in some states.

 

Biomarker Coverage:

  • Connecticut was one of the 19 states that required insurance coverage of comprehensive biomarker testing, including for lung cancer, as of September 2026.
Lack of Treatment

Not every person receives treatment after being diagnosed with lung cancer. This can happen for multiple reasons, such as poor health or refusal of treatment. Some of these reasons may be unavoidable, but no one should go untreated because of lack of provider or patient knowledge, lung cancer stigma, fatalism after diagnosis, or cost of treatment. Dismantling these barriers is important to reducing the percentage of people who do not receive any treatment.

No Treatment:

  • Connecticut ranked 5th (out of the 47 states with available data) with 16.0% of cases not receiving any treatment.
  • This is significantly lower than the national rate of 20.9% and puts Connecticut in the top tier.

Screening

High Risk

Screening for lung cancer with annual low-dose CT scans among those at high risk, as determined by the United States Preventive Services Task Force (USPSTF), can reduce the lung cancer death rate by up to 20% by detecting the disease at early stages when it is more likely to be curable.

High Risk is defined as:

USPSTF Guidelines 2021-present
Age 50-80 years (Medicare only covers screening up to age 77)
Smoking History 20 or more pack years
(this means 1 pack a day for 20 years, 2 packs a day for 10 years, etc.)
Currently smoke or quit within the last 15 years

Screening for High Risk:

  • In Connecticut, 35.4% of those at high risk were screened, which was significantly higher than the national rate of 24.4%.
  • It ranks 2nd (out of the 50 states with available data), placing it in the top tier.

For screening to be most effective in reducing the overall lung cancer mortality rate, more of the high-risk population should be screened—currently screening rates are very low among those at high risk. This may be because of a lack of access or low awareness and knowledge among patients and providers. Rates vary tremendously between states and more can be done to increase screening rates.

Prevention

Tobacco
​
Tobacco use is the leading risk factor for lung cancer. Smoking and secondhand smoke have both been shown to cause lung cancer.

State of Tobacco Control

Each year the Lung Association publishes the "State of Tobacco Control" report. The 2026 report grades the federal government and all 50 states on key tobacco control policies. States are graded in five policy areas: tobacco control and prevention spending, smokefree air, tobacco taxes, access to cessation services and flavored tobacco prohibitions.
View Report Card

Tobacco Use:

  • The 2025 smoking rate in Connecticut is 7.5% and significantly lower than the national rate of 10.4%.
  • It ranks 3rd (out of the 48 states with available data), placing it in the top tier.
Radon
​
Radon is the second leading cause of lung cancer.
Radon is a colorless and odorless gas that can seep into homes and buildings. Some geographical areas naturally have higher average radon levels than others, but because any home can be at risk for elevated levels, the only way to know is to do a test. If testing shows interior radon levels at or above the U.S. EPA action level of 4 pCi/L (picoCuries per liter of air) or higher, it is recommended to take corrective measures to reduce your exposure to radon gas. Such measures should also be considered at levels at or above 2 pCi/L.

Radon:

  • In Connecticut, 25.8% of radon tests results were at or above the action level recommended by EPA.
  • It ranks 29th among all states, placing it in the average tier.
Air Pollution
​
Air pollution is a known risk factor for lung cancer. Long-term exposure to outdoor particle pollution is known to cause lung cancer.

State of the Air

Each year the Lung Association publishes the "State of the Air" report. The 2026 report grades U.S. counties on harmful particle pollution and ozone pollution recorded over a three-year period, and details trends for metropolitan areas over the past two decades. The report also ranks the cleanest and most polluted areas in the country.
View Report Card

Racial & Ethnic Disparities

Black
 

Black individuals:

  • The rate of new lung cancer cases is 50.6 per 100,000 population among Black individuals in Connecticut, not significantly different than the rate of 53.5 among Black individuals nationally, and significantly lower than the rate of 55.5 among white individuals in Connecticut. 
  • The five-year survival rate is 33.3% among Black individuals in Connecticut, significantly higher than the rate of 28.5% among Black individuals nationally, and significantly lower than the rate of 38.6% among white individuals in Connecticut. 
  • 31.8% of lung cancer cases are diagnosed at an early stage among Black individuals in Connecticut, significantly higher than the rate of 26.3% among Black individuals nationally, and significantly lower than the rate of 35.9% among white individuals in Connecticut. 
  • 20.5% of Black individuals with lung cancer in Connecticut underwent surgery, significantly higher than the rate of 17.9% among Black individuals nationally, and significantly lower than the rate of 25.2% among white individuals in Connecticut. 
  • 17.1% of Black individuals with lung cancer in Connecticut did not receive any treatment, significantly lower than the rate of 22.7% among Black individuals nationally, and not significantly different than the rate of 16.1% among white individuals in Connecticut.
Latino
 

Latino individuals:

  • The rate of new lung cancer cases is 41.7 per 100,000 population among Latino individuals in Connecticut, significantly higher than the rate of 27.8 among Latino individuals nationally, and significantly lower than the rate of 55.5 among white individuals in Connecticut. 
  • State-level survival rates are not available for Latino individuals at this time. Nationally, the five-year survival rate among Latino individuals is 22.7%, not significantly different than the rate of 25.0% among white individuals. 
  • 29.4% of lung cancer cases are diagnosed at an early stage among Latino individuals in Connecticut, significantly higher than the rate of 24.7% among Latino individuals nationally, and significantly lower than the rate of 35.9% among white individuals in Connecticut. 
  • 25.4% of Latino individuals with lung cancer in Connecticut underwent surgery, significantly higher than the rate of 22.0% among Latino individuals nationally, and not significantly different than the rate of 25.2% among white individuals in Connecticut. 
  • 14.4% of Latino individuals with lung cancer in Connecticut did not receive any treatment, significantly lower than the rate of 25.1% among Latino individuals nationally, and not significantly different than the rate of 16.1% among white individuals in Connecticut.
Asian & Pacific Islander
 

Asian or Pacific Islander individuals:

  • The rate of new lung cancer cases is 27.8 per 100,000 population among Asian or Pacific Islanders individuals in Connecticut, significantly lower than the rate of 32.7 among Asian or Pacific Islanders individuals nationally, and significantly lower than the rate of 55.5 among white individuals in Connecticut. 
  • State-level survival rates are not available for Asian or Pacific Islander individuals at this time. Nationally, the five-year survival rate among Asian or Pacific Islander individuals is 28.6% and significantly higher than the rate of 25.0% among white individuals. 
  • 30.8% of lung cancer cases are diagnosed at an early stage among Asian or Pacific Islander individuals in Connecticut, not significantly different than the rate of 24.8% among Asian or Pacific Islander individuals nationally, and not significantly different than the rate of 35.9% among white individuals in Connecticut. 
  • 31.2% of Asian or Pacific Islander individuals with lung cancer in Connecticut underwent surgery, not significantly different than the rate of 26.0% among Asian or Pacific Islander individuals nationally, and not significantly different than the rate of 25.2% among white individuals in Connecticut. 
  • 13.1% of Asian or Pacific Islander individuals with lung cancer in Connecticut did not receive any treatment, significantly lower than the rate of 19.1% among Asian or Pacific Islander individuals nationally, and not significantly different than the rate of 16.1% among white individuals in Connecticut.
Indigenous Peoples
 

Indigenous Peoples:

  • Lung cancer data (including rates, early diagnosis, surgery, lack of treatment) is incomplete or unavailable for Indigenous Peoples (American Indians/Alaska Natives) in Connecticut due to data limitations.

Summary

Despite the early diagnosis rate in Connecticut falling into the top tier, the state still has a lot of work to do to make sure that more of those at high risk for lung cancer are screened.

Connecticut was one of the states that required insurance coverage of comprehensive biomarker testing, which can help determine what treatment options would be best for individuals with lung cancer and other diseases.

Connecticut falls into the top tier for percent of patients receiving no treatment. Some patients do refuse treatment, but issues such as fatalism and stigma can prevent eligible patients from accessing treatment that may save or extend their lives. All patients should work with their doctors to establish a treatment plan and goals.

​

State Infographic

Compare how your state ranks on each lung cancer measure.

Download PDF
​

What Can I Do?

You can lower their risk of lung cancer, as well as the risk of those around you, through these steps:

Take Action

All new lung cancer discoveries approved and recommended today have been studied in clinical trials, including lung cancer screening and treatment advances. Urge Congress to support the bipartisan Clinical Trial Modernization Act (H.R. 3521/S. 4440) to make clinical trials more accessible, including for people with lung cancer.

Take Action
  • Encourage others who meet the criteria to do the same.
  • If you or someone you know is ready to quit smoking, the Lung Association is here to help. Our Freedom From Smoking program has helped over a million people quit smoking for good.
  • Support comprehensive and strong tobacco control policies, including:
    • Higher tobacco taxes, which both encourage people to quit and prevent children and others from starting to smoke.
    • Adequate funding of tobacco control programs, which are an important part of helping people quit and keeping new people from starting.
    • Comprehensive coverage of all FDA-approved smoking cessation medication and the three forms of counseling, with no barriers to accessing them, which leads to more successful quit attempts.
  • Make your house and car clean air zones, with no smoking allowed. Avoid places that are not smokefree, and advocate for smokefree air policies in restaurants, bars, casinos or anywhere they are not in place.

Radon is a naturally occurring gas that can have a big impact on indoor air quality and your health. Take steps to reduce your risk if radon levels in your home are too high.
Learn more about radon

Page last updated: November 10, 2026