States › Connecticut
State
Connecticut
9 counties or equivalents, 213 places and 284 ZIP Codes with PLACES estimates; 3,617,176 residents.
- Counties
- Largest places
- State figures are site aggregates: population-weighted county estimates, no interval
Connecticut has 9 counties or equivalents, 213 places and 284 ZIP Code Tabulation Areas with PLACES estimates, covering 3,617,176 residents (2,894,190 adults).
PLACES does not publish state totals. The state figures here are population-weighted county estimates computed by this site, following CDC's published method for aggregating areas, and carry no interval. For the 2025 release that gives obesity at 30.5% (site aggregate) (age-adjusted 30.7%), below the national interval around 32.8%; county estimates range from 24.7% to 33.4%.
Diagnosed diabetes is 10.2% (site aggregate) by the same method (national 12.0%) and 10.0% (site aggregate) of adults aged 18–64 are estimated to lack health insurance (national 11.0%).
Report card: 40 measures by CDC category
Crude prevalence is the estimated share of all adults. Age-adjusted prevalence is standardised to the 2000 US standard population so that areas with different age structures can be compared. CDC: "Age-adjusted estimates are only available at the county and place-level."
estimate with 95% intervalUS estimate
Health outcomes (12)vs the US interval: 4 above · 8 below · 0 within
Prevention (7)vs the US interval: 5 above · 1 below · 1 within
Health risk behaviors (4)vs the US interval: 1 above · 1 below · 2 within
Disability (7)vs the US interval: 0 above · 7 below · 0 within
Health status (3)vs the US interval: 0 above · 2 below · 1 within
Health-related social needs (7)vs the US interval: 6 above · 0 below · 1 within
State figures are population-weighted county estimates computed by this site and carry no interval, so the dot is a point and the US flag says whether the state figure falls above, below or within CDC's national 95% interval. Each measure links to its national and state tables.
Counties in Connecticut
Ordered by point estimate; intervals overlap for most neighbouring rows, so the order is not a ranking. The flag says whether each row's interval lies above, below or in line with the Connecticut figure, which is a population-weighted county estimate computed by this site and carries no interval.
| Counties | Population | Estimate | 95% interval | vs the Connecticut figure |
|---|---|---|---|---|
| South Central Connecticut planning region | 568,158 | 33.4% | 29.2–37.8 | in line |
| Northeastern Connecticut planning region | 96,692 | 33.3% | 28.6–38.5 | in line |
| Naugatuck Valley planning region | 456,128 | 32.5% | 29.1–36.2 | in line |
| Southeastern Connecticut planning region | 279,634 | 32.5% | 28.3–37.5 | in line |
| Capitol planning region | 975,328 | 31.9% | 28.0–35.8 | in line |
| Lower Connecticut River Valley planning region | 176,215 | 29.0% | 24.9–33.7 | in line |
| Northwest Hills planning region | 113,463 | 28.2% | 24.3–32.9 | in line |
| Greater Bridgeport planning region | 327,651 | 28.1% | 24.0–32.0 | in line |
| Western Connecticut planning region | 623,907 | 24.7% | 21.1–28.4 | below |
Largest places in Connecticut
- Bridgeport 148,654
- Stamford 135,470
- New Haven 134,023
- Hartford 121,054
- Waterbury 114,403
- Norwalk 91,184
- Danbury 86,518
- New Britain 74,135
- West Hartford 64,083
- Meriden 60,850
- Bristol 60,833
- West Haven 55,584
- East Hartford 51,045
- Milford city (balance) 50,558
- Middletown 47,717
- Shelton 40,869
- Norwich 40,125
- Manchester 36,379
- Torrington 35,515
- Naugatuck 31,519
- Newington 30,536
- East Haven 27,923
- New London 27,367
- Wethersfield 27,298
- North Haven 24,253
The 25 most populous places; every county page lists all of its places and ZIP Codes.
Measures
State figures are population-weighted county estimates computed by this site and carry no interval; the word says whether each falls above, below or within CDC's national interval.
Health outcomes
- All Teeth Lost 9.8% (site aggregate) · US 12.2% · below US interval
- Arthritis 24.7% (site aggregate) · US 25.4% · below US interval
- Cancer (non-skin) or Melanoma 8.5% (site aggregate) · US 7.9% · above US interval
- COPD 5.6% (site aggregate) · US 6.2% · below US interval
- Coronary Heart Disease 5.8% (site aggregate) · US 6.4% · below US interval
- Current Asthma 11.0% (site aggregate) · US 9.8% · above US interval
- Depression 20.6% (site aggregate) · US 20.2% · above US interval
- Diabetes 10.2% (site aggregate) · US 12.0% · below US interval
- High Blood Pressure 32.0% (site aggregate) · US 34.4% · below US interval
- High Cholesterol 38.4% (site aggregate) · US 37.4% · above US interval
- Obesity 30.5% (site aggregate) · US 32.8% · below US interval
- Stroke 3.2% (site aggregate) · US 3.4% · below US interval
Prevention
- Cholesterol Screening 89.5% (site aggregate) · US 87.5% · above US interval
- Colorectal Cancer Screening 72.3% (site aggregate) · US 66.3% · above US interval
- Health Insurance 10.0% (site aggregate) · US 11.0% · below US interval
- Mammography 79.5% (site aggregate) · US 76.5% · above US interval
- High Blood Pressure Medication 76.5% (site aggregate) · US 77.0% · within US interval
- Dental Visit 70.7% (site aggregate) · US 63.9% · above US interval
- Annual Checkup 80.4% (site aggregate) · US 77.7% · above US interval
Health risk behaviors
- Binge Drinking 15.4% (site aggregate) · US 15.2% · within US interval
- Current Cigarette Smoking 10.6% (site aggregate) · US 11.4% · below US interval
- Physical Inactivity 25.1% (site aggregate) · US 24.5% · above US interval
- Short Sleep Duration 35.8% (site aggregate) · US 36.0% · within US interval
Disability
- Any Disability 25.3% (site aggregate) · US 30.0% · below US interval
- Cognitive Disability 12.3% (site aggregate) · US 13.7% · below US interval
- Hearing Disability 5.9% (site aggregate) · US 6.7% · below US interval
- Independent Living Disability 7.0% (site aggregate) · US 7.9% · below US interval
- Mobility Disability 11.3% (site aggregate) · US 13.5% · below US interval
- Self-care Disability 3.5% (site aggregate) · US 3.8% · below US interval
- Vision Disability 4.8% (site aggregate) · US 5.5% · below US interval
Health status
- General Health 16.2% (site aggregate) · US 19.2% · below US interval
- Frequent Mental Distress 15.8% (site aggregate) · US 15.6% · within US interval
- Frequent Physical Distress 12.4% (site aggregate) · US 12.8% · below US interval
Health-related social needs
- Food Insecurity 14.9% (site aggregate) · US 14.7% · within US interval
- Housing Insecurity 12.5% (site aggregate) · US 11.7% · above US interval
- Transportation Barriers 8.3% (site aggregate) · US 7.7% · above US interval
- Lack of Social/Emotional Support 25.1% (site aggregate) · US 23.3% · above US interval
- Loneliness 33.2% (site aggregate) · US 32.0% · above US interval
- Food Stamps 11.7% (site aggregate) · US 11.2% · above US interval
- Utility Services Threat 8.4% (site aggregate) · US 7.4% · above US interval
Questions and answers
How is the Connecticut figure calculated?
PLACES publishes county, place, tract and ZCTA estimates but no state row. Following CDC's guidance for aggregating areas, this site multiplies each county's estimate by its adult population, sums across the state's 9 counties and divides by the total adult population. The result has no published confidence interval, so county pages describe their position against it as above, below or in line with the state figure.
Which Connecticut counties have the highest obesity estimates?
The county table on this page can be sorted by any of the 40 measures. Estimates are listed with their 95% confidence intervals; adjacent counties often have overlapping intervals and cannot be told apart, so the order is by point estimate only and is not a ranking of health.
What is the difference between crude and age-adjusted figures?
Crude prevalence is the estimated share of all adults. Age-adjusted prevalence re-weights the estimate to the 2000 US standard population so areas with different age structures can be compared; CDC publishes age-adjusted figures for counties and places only. The toggle on this page switches between them.
Where does this data come from?
CDC PLACES: Local Data for Better Health, 2025 release, data updated 4 Dec 2025; the state figure for obesity is 30.5% (site aggregate) in the 2025 release.
Provenance
Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, 2025 release (data updated 4 Dec 2025), with the 2022, 2023, 2024 releases for reference; US government work, public domain. Boundaries and ZIP-to-county relationships: US Census Bureau. Percentages are shown to one decimal as CDC publishes them; state figures are population-weighted means computed by this site. The Connecticut figure for each measure is the sum over counties of estimate × adult population, divided by the state's adult population, per CDC's guidance for aggregating areas; measures defined on a subgroup (women 50–74, adults 18–64, adults 65 and over) are weighted by total adult population as an approximation. Processing errors are corrected at the next daily build; see corrections. Generated 1 Oct 2026.