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CTConnecticut rankings

Towns with the fewest uninsured adults in Connecticut

Ranked by the share of adults aged 18 to 64 with no health insurance, as estimated by the CDC. 154 towns with 2,500+ residents.

CDC PLACES health estimates, 2025 release

Killingly
Connecticut · Fewest uninsured

Where Killingly lands: #106 of 154

8% of adults 18–64 have no health insurance · Visit Killingly →

Madison 1 Madison South Central Connecticut Planning Region 4% Likely range 3–4% Woodbridge 1 Woodbridge South Central Connecticut Planning Region 4% Likely range 3–5% Weston 1 Weston Western Connecticut Planning Region 4% Likely range 3–5%
#TownUninsured, 18–64Likely rangeMedian income
T1 Madison MadisonSouth Central Connecticut Planning Region · 17,616 people 4% 3–4% $167,442
T1 Woodbridge WoodbridgeSouth Central Connecticut Planning Region · 9,073 people 4% 3–5% $188,750
T1 Weston WestonWestern Connecticut Planning Region · 10,396 people 4% 3–5% $250,001
T1 Simsbury SimsburyCapitol Planning Region · 25,066 people 4% 4–5% $157,907
T1 Darien DarienWestern Connecticut Planning Region · 21,936 people 4% 4–5% $250,001
T1 Avon AvonCapitol Planning Region · 18,946 people 4% 4–5% $154,058
T1 Canton CantonCapitol Planning Region · 10,144 people 4% 4–6% $117,991
T8 Glastonbury GlastonburyCapitol Planning Region · 35,293 people 5% 4–5% $157,192
T8 Westport WestportWestern Connecticut Planning Region · 27,528 people 5% 4–5% $250,001
T8 Old Lyme Old LymeLower Connecticut River Valley Planning Region · 7,679 people 5% 4–5% $131,899
T8 New Canaan New CanaanWestern Connecticut Planning Region · 20,870 people 5% 4–5% $250,001
T8 Granby GranbyCapitol Planning Region · 11,184 people 5% 4–6% $120,275
T8 New Hartford New HartfordNorthwest Hills Planning Region · 6,675 people 5% 4–6% $109,695
T8 Map of Barkhamsted BarkhamstedNorthwest Hills Planning Region · 3,678 people 5% 3–6% $123,544
T8 Guilford GuilfordSouth Central Connecticut Planning Region · 22,108 people 5% 4–6% $137,816
T8 Orange OrangeSouth Central Connecticut Planning Region · 14,315 people 5% 4–6% $142,325
T8 Redding ReddingWestern Connecticut Planning Region · 8,780 people 5% 4–6% $186,060
T8 Essex EssexLower Connecticut River Valley Planning Region · 6,794 people 5% 4–6% $104,395
T8 Killingworth KillingworthLower Connecticut River Valley Planning Region · 6,240 people 5% 3–6% $140,655
T8 Goshen GoshenNorthwest Hills Planning Region · 3,196 people 5% 4–6% $152,093
T8 Ridgefield RidgefieldWestern Connecticut Planning Region · 25,109 people 5% 4–6% $179,219
T8 Wilton WiltonWestern Connecticut Planning Region · 18,777 people 5% 4–6% $242,199
T8 Tolland TollandCapitol Planning Region · 14,606 people 5% 4–6% $133,264
T8 Old Saybrook Old SaybrookLower Connecticut River Valley Planning Region · 10,575 people 5% 4–6% $114,333
T8 Burlington BurlingtonNorthwest Hills Planning Region · 9,680 people 5% 4–6% $165,120
T8 Hebron HebronCapitol Planning Region · 9,157 people 5% 4–6% $142,500
T8 Bethany BethanySouth Central Connecticut Planning Region · 5,288 people 5% 4–7% $166,236
T8 Easton EastonGreater Bridgeport Planning Region · 7,670 people 5% 4–6% $222,604
T8 Andover AndoverCapitol Planning Region · 3,152 people 5% 4–6% $134,632
T8 Farmington FarmingtonCapitol Planning Region · 27,134 people 5% 4–6% $141,120
T8 Stonington StoningtonSoutheastern Connecticut Planning Region · 18,478 people 5% 4–6% $114,797
T8 Woodbury WoodburyNaugatuck Valley Planning Region · 9,833 people 5% 4–6% $131,480
T8 Middlebury MiddleburyNaugatuck Valley Planning Region · 7,807 people 5% 4–6% $133,487
T8 Salem SalemSoutheastern Connecticut Planning Region · 4,282 people 5% 4–6% $123,245
T8 Haddam HaddamLower Connecticut River Valley Planning Region · 8,644 people 5% 4–7% $114,426
T8 Salisbury SalisburyNorthwest Hills Planning Region · 4,224 people 5% 4–6% $124,256
T8 Sherman ShermanWestern Connecticut Planning Region · 3,554 people 5% 4–7% $116,000
T8 Sharon SharonNorthwest Hills Planning Region · 2,723 people 5% 4–7% $100,518
T8 South Windsor South WindsorCapitol Planning Region · 26,907 people 5% 4–6% $144,961
T8 Southbury SouthburyNaugatuck Valley Planning Region · 20,071 people 5% 4–6% $112,887
T8 Map of Oxford OxfordNaugatuck Valley Planning Region · 12,991 people 5% 4–6% $128,953
T8 Woodstock WoodstockNortheastern Connecticut Planning Region · 8,319 people 5% 4–6% $112,011
T8 Litchfield LitchfieldNorthwest Hills Planning Region · 8,260 people 5% 4–7% $102,609
T8 Marlborough MarlboroughCapitol Planning Region · 6,130 people 5% 4–7% $142,105
T8 Ellington EllingtonCapitol Planning Region · 16,455 people 5% 5–6% $129,913
T8 East Granby East GranbyCapitol Planning Region · 5,238 people 5% 4–7% $120,938
T47 Fairfield FairfieldGreater Bridgeport Planning Region · 63,416 people 6% 5–7% $172,432
T47 East Lyme East LymeSoutheastern Connecticut Planning Region · 18,721 people 6% 4–7% $105,044
T47 Coventry CoventryCapitol Planning Region · 12,326 people 6% 5–7% $108,213
T47 East Haddam East HaddamLower Connecticut River Valley Planning Region · 8,969 people 6% 5–7% $107,861
T47 Durham DurhamLower Connecticut River Valley Planning Region · 7,208 people 6% 4–7% $158,857
T47 Harwinton HarwintonNorthwest Hills Planning Region · 5,575 people 6% 5–7% $129,643
T47 Bolton BoltonCapitol Planning Region · 4,853 people 6% 4–7% $126,364
T47 West Hartford West HartfordCapitol Planning Region · 63,620 people 6% 5–7% $129,890
T47 Deep River Deep RiverLower Connecticut River Valley Planning Region · 4,458 people 6% 5–7% $90,253
T47 Pomfret PomfretNortheastern Connecticut Planning Region · 4,317 people 6% 4–7% $108,476
T47 MiddlefieldLower Connecticut River Valley Planning Region · 4,243 people 6% 4–7% $99,837
T47 Map of Bethlehem BethlehemNaugatuck Valley Planning Region · 3,423 people 6% 5–7% $108,929
T47 Colchester ColchesterSoutheastern Connecticut Planning Region · 15,648 people 6% 5–7% $122,390
T47 Cheshire CheshireNaugatuck Valley Planning Region · 29,040 people 6% 5–7% $146,528
T47 Map of Berlin BerlinCapitol Planning Region · 20,361 people 6% 5–7% $113,598
T47 Prospect ProspectNaugatuck Valley Planning Region · 9,458 people 6% 5–7% $126,394
T47 North Stonington North StoningtonSoutheastern Connecticut Planning Region · 5,160 people 6% 4–7% $123,938
T47 Washington WashingtonNorthwest Hills Planning Region · 3,676 people 6% 4–8% $101,549
T47 North Haven North HavenSouth Central Connecticut Planning Region · 24,336 people 6% 5–7% $132,689
T47 Rocky Hill Rocky HillCapitol Planning Region · 20,880 people 6% 5–7% $99,941
T47 Monroe MonroeGreater Bridgeport Planning Region · 18,949 people 6% 5–7% $157,250
T47 Chester ChesterLower Connecticut River Valley Planning Region · 3,825 people 6% 5–7% $109,191
T47 Kent KentNorthwest Hills Planning Region · 3,056 people 6% 4–8% $96,064
T47 Branford BranfordSouth Central Connecticut Planning Region · 28,217 people 6% 5–7% $105,225
T47 Wolcott WolcottNaugatuck Valley Planning Region · 16,279 people 6% 5–7% $110,850
T47 Cromwell CromwellLower Connecticut River Valley Planning Region · 14,334 people 6% 5–7% $110,596
T47 Preston PrestonSoutheastern Connecticut Planning Region · 4,821 people 6% 5–8% $116,648
T47 Southington SouthingtonCapitol Planning Region · 43,803 people 6% 5–7% $124,309
T47 Watertown WatertownNaugatuck Valley Planning Region · 22,253 people 6% 5–7% $101,691
T47 Map of North Branford North BranfordSouth Central Connecticut Planning Region · 13,503 people 6% 5–8% $108,032
T47 East Hampton East HamptonLower Connecticut River Valley Planning Region · 12,925 people 6% 5–7% $124,577
T47 Portland PortlandLower Connecticut River Valley Planning Region · 9,434 people 6% 5–8% $118,929
T47 Thomaston ThomastonNaugatuck Valley Planning Region · 7,492 people 6% 5–7% $103,218
T47 Beacon Falls Beacon FallsNaugatuck Valley Planning Region · 6,147 people 6% 5–8% $101,516
T47 Greenwich GreenwichWestern Connecticut Planning Region · 63,856 people 6% 5–7% $206,130
T47 Ashford AshfordNortheastern Connecticut Planning Region · 4,226 people 6% 5–8% $121,926
T47 Lebanon LebanonSoutheastern Connecticut Planning Region · 7,116 people 6% 5–8% $109,135
T47 Newtown NewtownWestern Connecticut Planning Region · 27,593 people 6% 5–8% $155,110
T47 Westbrook WestbrookLower Connecticut River Valley Planning Region · 6,856 people 6% 5–8% $91,202
T86 Wethersfield WethersfieldCapitol Planning Region · 27,250 people 7% 6–8% $126,806
T86 Map of Brookfield BrookfieldWestern Connecticut Planning Region · 17,706 people 7% 6–8% $148,360
T86 Canterbury CanterburyNortheastern Connecticut Planning Region · 5,124 people 7% 5–8% $103,198
T86 Trumbull TrumbullGreater Bridgeport Planning Region · 37,281 people 7% 6–8% $163,073
T86 Waterford WaterfordSoutheastern Connecticut Planning Region · 19,673 people 7% 6–8% $104,820
T86 Ledyard LedyardSoutheastern Connecticut Planning Region · 15,433 people 7% 5–8% $107,975
T86 Clinton ClintonLower Connecticut River Valley Planning Region · 13,377 people 7% 6–8% $124,824
T86 East Windsor East WindsorCapitol Planning Region · 11,213 people 7% 6–8% $96,250
T86 Columbia ColumbiaCapitol Planning Region · 5,300 people 7% 5–9% $127,000
T86 Stafford StaffordCapitol Planning Region · 11,511 people 7% 6–8% $93,235
T86 Voluntown VoluntownNortheastern Connecticut Planning Region · 2,604 people 7% 5–9% $101,964
T86 Suffield SuffieldCapitol Planning Region · 15,702 people 7% 6–9% $119,472
T86 New Milford New MilfordWestern Connecticut Planning Region · 28,334 people 7% 6–8% $106,411
T86 New Fairfield New FairfieldWestern Connecticut Planning Region · 13,584 people 7% 6–8% $137,647
T86 Thompson ThompsonNortheastern Connecticut Planning Region · 9,337 people 7% 6–9% $93,629
T86 Windsor WindsorCapitol Planning Region · 29,468 people 7% 6–8% $104,725
T86 Plymouth PlymouthNaugatuck Valley Planning Region · 11,746 people 7% 6–9% $94,514
T86 Willington WillingtonCapitol Planning Region · 5,575 people 7% 6–9% $91,114
T86 Map of Wallingford WallingfordSouth Central Connecticut Planning Region · 44,362 people 7% 6–8% $104,773
T86 Newington NewingtonCapitol Planning Region · 30,896 people 7% 6–9% $102,884
T106 Mansfield MansfieldCapitol Planning Region · 25,358 people 8% 6–9% $72,393
T106 Map of Bloomfield BloomfieldCapitol Planning Region · 21,754 people 8% 6–9% $98,725
T106 Seymour SeymourNaugatuck Valley Planning Region · 16,889 people 8% 6–9% $107,708
T106 Hamden HamdenSouth Central Connecticut Planning Region · 61,045 people 8% 7–9% $98,306
T106 Windsor Locks Windsor LocksCapitol Planning Region · 12,579 people 8% 7–9% $81,205
T106 Griswold GriswoldSoutheastern Connecticut Planning Region · 11,530 people 8% 7–9% $78,719
T106 Winchester WinchesterNorthwest Hills Planning Region · 10,284 people 8% 7–9% $66,519
T106 Brooklyn BrooklynNortheastern Connecticut Planning Region · 8,517 people 8% 7–9% $96,207
T106 Lisbon LisbonSoutheastern Connecticut Planning Region · 4,211 people 8% 7–9% $92,708
T106 Shelton Shelton41,889 people 8% 7–9% $108,185
T106 Somers SomersCapitol Planning Region · 10,308 people 8% 7–9% $124,705
T106 Montville MontvilleSoutheastern Connecticut Planning Region · 17,950 people 8% 7–10% $96,454
T106 Map of Middletown Middletown47,958 people 8% 7–9% $79,438
T106 Killingly KillinglyNortheastern Connecticut Planning Region · 17,867 people 8% 7–10% $84,350
T106 Sprague SpragueSoutheastern Connecticut Planning Region · 2,962 people 8% 7–10% $92,850
T106 Map of Enfield EnfieldCapitol Planning Region · 41,090 people 8% 7–10% $90,404
T106 Groton GrotonSoutheastern Connecticut Planning Region · 38,130 people 8% 7–10% $88,284
T106 Sterling SterlingNortheastern Connecticut Planning Region · 3,629 people 8% 7–11% $102,695
T124 Vernon VernonCapitol Planning Region · 30,577 people 9% 7–10% $85,356
T124 Naugatuck Naugatuck31,800 people 9% 7–10% $96,324
T124 Plainfield PlainfieldNortheastern Connecticut Planning Region · 15,141 people 9% 7–10% $76,993
T124 Bethel BethelWestern Connecticut Planning Region · 20,796 people 9% 8–10% $116,541
T124 North Canaan North CanaanNorthwest Hills Planning Region · 3,221 people 9% 7–11% $71,976
T124 Bristol Bristol61,462 people 9% 8–10% $79,076
T124 Plainville PlainvilleCapitol Planning Region · 17,551 people 9% 8–10% $84,343
T131 Putnam PutnamNortheastern Connecticut Planning Region · 9,292 people 10% 8–12% $70,561
T131 Manchester ManchesterCapitol Planning Region · 59,635 people 10% 8–11% $86,840
T131 Danielson Danielson4,209 people 10% 8–12% $64,050
T131 Jewett City Jewett City3,429 people 10% 8–12% $55,530
T131 Torrington Torrington35,547 people 10% 9–12% $70,856
T136 Map of Derby Derby12,487 people 11% 9–13% $79,500
T136 Ansonia Ansonia19,033 people 11% 9–13% $85,877
T136 Groton Groton9,490 people 11% 9–13% $79,577
T136 Stratford StratfordGreater Bridgeport Planning Region · 52,790 people 11% 10–13% $95,815
T140 Map of West Haven West Haven55,351 people 12% 10–13% $74,382
T140 Norwich Norwich39,973 people 12% 11–14% $65,024
T140 Stamford Stamford137,144 people 12% 11–14% $111,586
T143 Norwalk Norwalk92,187 people 13% 11–14% $107,616
T143 East Haven East HavenSouth Central Connecticut Planning Region · 27,806 people 13% 11–15% $94,628
T143 Windham WindhamSoutheastern Connecticut Planning Region · 23,961 people 13% 11–15% $55,736
T146 East Hartford East HartfordCapitol Planning Region · 50,918 people 15% 13–16% $70,778
T146 New Haven New Haven134,349 people 15% 13–16% $56,851
T146 New London New London27,625 people 15% 13–17% $59,098
T146 Meriden Meriden60,545 people 15% 13–17% $71,253
150 Danbury Danbury87,263 people 16% 14–17% $83,393
T151 Waterbury Waterbury114,869 people 19% 17–20% $51,886
T151 New Britain New Britain74,223 people 19% 17–21% $58,613
153 Hartford Hartford121,127 people 20% 18–22% $46,411
154 Bridgeport Bridgeport149,153 people 21% 19–24% $58,685

How this ranking works

We rank every town by the share of adults aged 18 to 64 with no health insurance, as estimated by the CDC. Most people 65 and older have Medicare, so they aren't counted. The lowest share ranks #1. Across Connecticut it’s 10%.

These are the CDC’s modeled estimates, not a count: national survey answers combined with each area’s age, sex, race and income mix. Each carries a likely range (shown in the table), so we rank on the whole percent and towns at the same figure share a rank (T = tied). Differences of a point or two are within the estimates’ margins.

Cities and villages use the CDC’s own estimate for that place. New England towns and townships, which the CDC doesn’t publish, use the ZIP codes that cover them, weighted by land area.

Only towns with at least 2,500 residents are ranked; Census estimates for smaller places are too uncertain. Population and income: U.S. Census Bureau American Community Survey 5-year estimates. Health estimates: CDC PLACES. Town photos: Wikimedia Commons, credited on each town’s page.

Same ranking in other states

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